bt2-series fuji air circuit breaker - fuji electric
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Fuji Electric FA Components & Systems Co.,Ltd.
BT2-seriesFUJI AIR CIRCUIT BREAKER
Instruction Manual
Please apply appropriate means to ensure that InstructionManual is delivered to the persons assigned with finalResponsibilities for maintenance of this equipment.
Ha Noi O�ce:No. 95 - TT4, My Dinh Urban Area, My Dinh, Nam Tu Liem, Hanoi.Tel: (84 4) 3568 3740Fax: (84 4) 3568 3741
Cambodia O�ce:#140, Room 1-B, St430, Sangkat Toul Tompuong II, Khan Chamkamon, PP.Tel: 855 2322 3635Fax: 855 2322 3645
Head O�ce:No 88, Vinh Phu 40, Hoa Long,Vinh Phu, Thuan An, Binh Duong.Tel: (84 650) 37 37 619Fax: (84 650) 37 37 620
1800 6547THINK TOGETHER
Nhà phân phối thiết bị điện công nghiệphàng đầu Việt Nam
T
SAFETY NOTICES
Thank you for purchasing the FUJI BT2-series Air Circuit Breaker.This chapter contains important safety information.Be sure to carefully read these safety notices, instruction in this manual, and other documents
accompanying the Air Circuit Breaker (hereinafter referred to as the ACB) to familiarize yourselfwith safe and correct procedures or practices before installing, operating, or servicing the ACB.
In this manual, safety notices are divided into“DANGER” and“CAUTION” according tothe hazard level:
DANGER
CAUTION
:A danger notice with this symbol indicates a potentially hazardous situation which,if not avoided, could result in death or serious injury.
:A caution notice with this symbol indicates a potentially hazardous situation which,if not avoided, may result in minor or moderate injury and/or property damage.Note that failure to observe a caution notice could result in serious injury/damage in
some situations. Because safety notices contain important information, be sure to read and observe■ Transportation Precaution
DANGER
● Never stand under the ACB that has been lifted or suspended by a lifter or lifting attachments.The weight of the ACB may cause serious injury.
■ Installation PrecautionCAUTION
●● Do not place the ACB in such an area that is subject to high temperatures, high humidity,
dusty air, corrosive gases, strong vibration and shock, or other unusual conditions. Mountingthe ACB in such an area could cause a fire or malfunction.
● Be careful to prevent foreign objects (such as debris, concrete powder, dust, chippings, andiron powder) and oil or rainwater from entering the ACB. These materials inside the ACBcould cause a fire or malfunction.
● Prior to commencing any work on the ACB, open an upstream circuit breaker or the like toisolate all sources of power/voltage. Otherwise, electric shock may result.
● Fix the draw-out cradle of the ACB firmly on a flat, level surface using mounting screws.Otherwise, the draw-out operation may cause the breaker body or the draw-out cradle to fall,resulting in damage to the ACB or personal injury.
● Take care not to deform or bend protrusions in the bottom face of the draw-out cradle whenfixing the draw-out cradle with mounting screws. Deformation of the protrusions may cause amalfunction.
● Connect conductors (including screws) to the main circuit terminals in the specified area.Otherwise, a short-circuit may result.
● When terminating conductors to the ACB, tighten terminal screws to the torque specified inthis manual. Otherwise, a fire could result.
● For 4-pole ACBs, be sure to connect a 3-phase, 4-wire neutral conductor to the N-phase pole(on the right end). Otherwise, an overcurrent may hinder the ACB from tripping, resulting in a fire.
Electrical work must be done by competent persons.
■ Operation Precautions
DANGER● Never touch live terminal parts. Doing so will result in electric shock.● Do not leave the ACB body in the draw-out position. If the ACB body is accidentally dropped,
its weight may cause serious injury.
CAUTION●Do not force down the charging handle after completion of manual charging operation. Doing so
may cause a malfunction.●The permissible operating voltage of the spring charging motor is 85 to 110% of the rated ac
voltage or 75 to 110% of the rated dc voltage. Be sure to supply a voltage within the above
SAFETY NOTICES
■ OCR (Overcurrent Release) Handling Precautions
●OCR setting changes must be performed by competent persons.●Use a small flatblade screwdriver with a torque of not more than 0.1 N·m or a force of not
more than 0.1 N when adjusting the setting switches (rotary step switches or slide switches). Anexcessive torque or force may cause a malfunction.
CAUTION
■ Maintenance and Inspection Precautions
CAUTION●ACB maintenance, inspection and parts replacement must be performed by competent persons.●Do not touch ACB current carrying parts and its surrounding parts or structures after the ACB
trips open. Remaining heat may cause a burn.●Prior to commencing any work on the ACB, open an upstream circuit breaker or the like to
isolate all sources of power/voltage from the main and control circuits. Otherwise, electricshock may result.
●Take care to avoid adhesion of dust to main and control circuit contacts. Dust on the contactsmay result in a fire.
●Prior to commencing maintenance, inspection, or parts replacement, make sure that the closingsprings are released and the ACB is open. Otherwise, unintentional open/close operation maylead to fingers or tools to be pinched by the open/close mechanism, resulting in injury.
●Retighten the terminal screws periodically to the specified torque. Otherwise, a fire could result.●When grinding a contact tip, be careful to prevent grinding dust from entering the breaker
operating mechanism. Wipe the tip clean after grinding. Otherwise, a malfunction or fire couldresult.
●Do not perform dielectric withstand tests under other conditions than specified. Doing so maycause a malfunction.
●Be sure to reinstall the arc chamber if removed. Failure to do so or incorrect installation of thearc chamber may result in a fire or burn.
●When charging the closing springs or performing open/close operation of the ACB with the arcchamber, front cover and/or side covers removed during maintenance or inspection work, do nottouch parts other than those required for the above operation (charging handle, ON/OFFbuttons, moving core and the like). Doing so may cause fingers or tools to be pinched, resultingin injury.
●When replacing an auxiliary, do not damage the control wire for the auxiliary or pinch the wirebetween the auxiliary and the breaker body. Doing so may cause a malfunction.
ranges to the motor. Otherwise, a malfunction, burnout, or fire may result.●Repeated open/close operation by the motor charging mechanism without pause should not
exceed 15 times. If repeated continuous open/close operation is inevitable, a pause of at least20 minutes should be provided after the repetitions of 15 times. Otherwise, a spring chargingmotor may be burnt out.
●Do not bring your hand or face close to arc gas vent of the arc chamber while the ACB is closed.Otherwise, a burn may result from high-temperature arc gas blowing out of the arc gas ventwhen the ACB trips open.
●If the ACB trips open automatically, remove the cause of tripping operation before re-closingthe ACB. Otherwise, a fire could result.
● If the ACB has the breaker fixing bolts, be sure to loose the fixing bolts before draw-outoperation. Otherwise, damage to the ACB may result.
●Make sure the draw-out cradle is secured with mounting screws before inserting or drawing outthe breaker body. Otherwise, the insertion or draw-out operation may cause the breaker bodyor the draw-out cradle to fall, resulting in damage to the ACB or personal injury.
●When retracting the draw-out rail into the draw-out cradle, be sure to push the rail end. Donot hold the hook pin, body stopper, or body stopper shaft. Doing so may cause your fingers tobe pinched, resulting in injury.
● Do not forcedly turn the draw-out handle clockwise when the breaker body is in the“CONN.” position. Doing so may cause a malfunction.
● If the ACB has the breaker fixing bolts, make sure the bolts on both sides are securelytightened before using the ACB. Loosened fixing bolts may cause a malfunction of the ACB, inparticular when it is installed in such an area that is subject to strong vibrations.
CONTENTS
1.0 General description
2.0 Acceptance
3.0 Storage, transportation and weight
4.0 Unpacking and notice
5.0 Installation
6.0 Electrical wiring
1.1 Applicable condition
1.2 Main features
1.3 General structure
1.4 Protection characteristic curve of intelligent controller
3.1 Storage
3.2 Transportation
3.3 Weight
4.1 Unpacking
4.2 Items to check before operation
5.1 Environment condition
5.2 Preparation
5.3 Installation of draw-out breaker
5.4 In of fixed breaker
6.1 Schematic diagram for secondary circuit terminals of BT2-1600 circuit breaker
6.2 Applied torque for connecting busbar and terminals
6.3 Grounding
6.4 Power loss and derating coefficient
6.5 Specification of the copper busbar wired in the primary circuit of draw-out breaker
stallation
1
1
1
2
4
11
11
11
12
14
14
15
15
15
16
16
16
17
17
17
17
11
19
18
6.6 Secondary circuit wiring diagram
7.1 Charging operation
7.2 On and off operation
7.3 Operation of draw-out breaker
7.4 Lock at the position of separated by safety padlock mechanism for the draw-out
Breaker socket
8.1 Setting and use of type L25intelligent controller
8.2 Setting and use of type M25, M26 and H26 intelligent controller
8.3
8.4
8.5
10.1 Checking and preparation
10.2 Trial operation
11.1 Maintenance
11.2 Examination and repair
11.3 R ccessories
13.1 Necessary accessories
13.2 Optional accessories
7.0 Operation
8.0 Setting and use of intelligent controller
9.0 Checking
10.0 Trial operation
11.0 Maintenance , examination and repair
12.0 Common fault and solution
13.0 Accessories
14.0 Outline dimensions and installation dimensions
“ ”
Characteristic setting and use of P25 and P26 controller
Communication function of H26, P25 and P26 controller
Other Function
eplacement of a
20
24
24
24
26
33
34
34
37
57
57
57
58
58
58
59
61
62
65
65
68
75
CONTENTS
54
54
55
1.0 GENERALDESCRIPTION
1.1 APPLICABLE CONDITION
According to the requirements of the lastest International Standard IEC 60947-2, FujiElectric FA Components & Systems Co.,Ltd presents the new generation of BT2 Series IntelligentAir Circuit Breaker, which embraces the human-based design and convenient application and ischaracteristic of all-intelligence, high-breaking capacity, isolation etc and which has shaped thenew image of new generation of circuit breakers.
BT2 Series Intelligent Air Circuit Breaker (hereinafter referred to as Circuit Breaker) is mainlyused to distribute electric power and protect the electric circuit and devices from over-load,shortcircuit,under-voltage and grounding fault etc in the distribution system of AC50Hz/60Hz,Rated Operating Voltage 440V、 690Vand 1000V, Rated Insulation Voltage 1000V, and RatedOperating Current 6300A or below. The Circuit Breaker has introduced the intelligent controllerwith accurate selective protection and multiple functions and especially suits for the distributionsystem, in which the reliability of power supply needs to be improved and power failure should beavoided. The Circuit Breakers, with Rated Operating Current 1000A and below, can take the role ofmotor overload, short-circuit, under-voltage and grounding fault protections in the network ofAC50Hz/60Hz 440V and can also infrequently start a motor under normal conditions.
1.2 MAIN FEATURES
·1·
High performance, compact sizeBT2 Series Circuit Breaker has five frames:1600, 2000, 2500, 4000 and 6300. BT2-1600,
which can be installed inside the switchgear cabinet of 400mm in width, is only 248mm in width.The size of the newly developed BT2-2500, which is 347mm in width which is equal to that of BT2-2000;and whose Ics is queal to Icu up to 85kA and whose short time withstand current is up to 65kA.BT2-4000 and BT2-6300 can save space and costs forcustomers by meeting the requirements ofhigh capacity and miniaturization.
Higher breaking capacity and short-time withstand capacityFor the whole series of BT2 Circuit Breakers(not for BT2-1600 at 690V), Rated service Short-
circuit Breaking Capacity Ics is 100 percent equal to Rated Ultimate Short-circuit BreakingCapacity Icu. As the rated service short-circuit breaking capaicty is up to 120kA at maximum andshort-time withstand current Icw is up to 100kA at maximum, the BT2 Series can confidently facethe challenge of all kinds of protected occassions.
Simply installed, cost-savingBT2 Series Circuit Breakers bus bar terminals can be simply installed as follows: 1. Horizontal
connection; 2.Vertical connection;3. Composite connection
·2·
1.0 GENERALDESCRIPTION
1.3 GENERAL STRUCTURE
There are two kinds of circuit breakers: fixed and draw-out. The latter is formed by putting thethe main body into the exclusive draw-out socket. The main body is composed of contact system,arc-over system, operating mechanism system, current transformer, intelligent controller, auxiliaryswitch, secondary connector, under-voltage release, shunt release etc; The draw-out socket iscomposed of two-side plates of cradle, base, crossbeam,etc….
Outline and Name of each part
Fig . Fixed1-1
Advanced and reliable safety performanceBT2 Series Circuit Breakers are reliable by the following aspects:Reliable assurance of the three positions: connected, test, seperated by the locked andautomatically unlocked mechanismat the draw-out socket.Clear indication of ready-for-switching-on to ensure safe manipulation and reliable operationMore reliable safety protection with secondary terminals of protection grade IP30More complete protection and comprehensive selectionBT2 Series Circuit Breakers can implement zone selective interlock (ZSI) to ensurecomprehensive selection of various protection and reduce the copper bar's bearing ofthermodynamic.Easy to integrate and realize networking managementBT2 Series Circuit Breakers can achieve the function of intelligent and networking monitorand are easy for customers to carry out integrated management by adopting open
communication,protocol Modbus-RTU, which can connect with Field Bus such as Profibus,DeviceNet by converter.
18
19
2021
22
23
24
Fig.1-3 Draw-out socket outline
·3·
Illustrations:
Installation hole
Satety back plate
Wiring terminals of secondary circuit
Side plate
Copper bar of the main circuit
Draw-out socket
Earthing point at draw-out socket
18192021222324
1
2
Fig.1-2 Draw-out
“ ”
“ ”
“ ”
“ ” “ ” “ ”
“ ”
Separated : indicates that main circuitand secondary circuit are both in isolation.
test : indicates that main circuit is iniso lation and s econdary cir cuit is inconnection.
connected : indicates that main circuitand secondary circuit are both in connection.
The circuit breaker can be automaticallylocked (rocker can not be turned at this point)when its main body is at the position of
separated , test or connectedby turning the rocker, and can be unlocked bypushing unlock button to the left side.
Illustrations:
Name Plate
Indication window of energy-storage and energy-release
Switching-on Button
Manual energy-storage handle
Brand
Wiring terminals of secondary circuit
"Switching-off "lock mechanism
Release indication and resetting button
Intelligent controller
Switching button
Indication of switching-on( "I" )andswitching-off( "O" )
Indication of ready-for-switching-on(" OK" )
Unlock button of the three positions( "separated ",
"test" and "connected" ) for draw-out circuit breakers
Rocker operating hole of the draw-out circuit breaker
Rocker storage hole of the draw-out circuit breaker
Indication of the three positions( "separated" , "test"
and "connected") of the draw-out circuit breaker
12
345678910111213
14151617
Note:
1.0 GENERALDESCRIPTION
1.4 Protection characteristic curve of intelligent controller
Characteristic Curve
Time/Current Curve of Type L25 intelligent controller (I t)2
·4·
1.0 GENERALDESCRIPTION
Ir1
0.4 1 1.5 3 10 150.01
0.02
0.1
0.2
1
10
100
1000
10000
t(s)
0.30.4
Ir1
t1
long-time delay curve
Ir2I T ON2
Short-time delay curve
I T OFF2
Instantaneous curve
t2
Ir =(0.65~1)In
t =15s~480s 6 steps in total
1
1
The range of long-time delay
The range of short-time delay
Ir =(1.5~10)Ir +OFF
t =0.1s~0.4s 4 steps in total
2 1
2
Instantaneous range
Ir =(3~15)Ir +OFF3 1
Instantaneous range
Factory's setting value
Time/Current Curve of Type M25, M26 , H26, P25, P26 intelligent controller(I t)2
·5·
1.0 GENERALDESCRIPTION
0.4 1 100.01
0.02
0.1
0.2
1
10
100
1000
10000
t(s)
0.30.4
1.6 15 80
Ir =(0.4~15)In+OFF
t =0.1s~0.4s 4 steps in total
2
2
Ir =(0.4~1)Int =15s~480s 6 steps in total
1
1
The range of long-time delay
The range of short-time delay
Ir =1.6kA~35kA+OFF3
2kA~50kA+OFF2.5kA~50kA+OFF
4kA~65kA+OFF6.3kA~80kA+OFF
Instantaneousrange
kAIr1
Ir1
t1
long-time delay curve
Ir2I T ON2
Short-time delay curve
I T OFF2
t2
Instantaneous curve
Factory's setting value
Instantaneous range
BT2-1600BT2-2000BT2-2500BT2-4000BT2-6300
Time/Current Curve of Type P25 and P26 intelligent controller (inverse time delay pecial It)s
·6·
1.0 GENERALDESCRIPTION
0.4 1 100.01
0.02
0.1
0.2
1
10
100
1000
10000
t(s)
0.30.4
1.6 15
kAIr1
80
Ir =(0.4~15)In+OFF
t =0.1s~0.4s 4 steps in total
2
2
Ir =(0.4~1)Int =10s~120s 6 steps in total
1
1
The range of long-time delay
The range of short-time delay
Ir =1.6kA~35kA+OFF3
2kA~50kA+OFF2.5kA~50kA+OFF
4kA~65kA+OFF
6.3kA~80kA+OFF
Instantaneousrange
Ir1
t1
long-time delay curve
Ir2I T ON2
Short-time delay curve
t2
I T OFF2
Instantaneous curve
Factory's setting value
Instantaneous range
BT2-1600BT2-2000BT2-2500
BT2-4000BT2-6300
Time/Current Curve of Type P25 and P26 intelligent controller (high-voltage fuse I t)4
·7·
1.0 GENERALDESCRIPTION
Ir =(0.4~15)In+OFF
t =0.1s~0.4s
2
2 4 steps in total
Ir =(0.4~1)In
t =60s~1440s 61
1 steps in total
The range of long-time delay
The range of short-time delay
Ir =1.6kA~35kA+OFF3
2kA~50kA+OFF
2.5kA~50kA+OFF4kA~65kA+OFF
6.3kA~80kA+OFF
Instantaneousrange
0.4 1 100.001
0.1
0.2
1
100
1000
10000
100000
t(s)
0.30.4
1.6 15
kAIr1
80
10
0.01
Ir1
t1
long-time delay curve
Ir2I T ON2
Short-time delay curvet2
I T OFF2
Instantaneous curve
Instantaneous range
Factory's setting value
BT2-1600BT2-2000BT2-2500BT2-4000BT2-6300
Time/Current Curve of Type M26 , H26 and P26 intelligent controller (for ground-fault protection)
·8·
1.0 GENERALDESCRIPTION
Grounding currentIr =(0.4~0.8)In(BT2-1600)Ir =(0.2~0.8)In(BT2-2000、
BT2-2500)Ir =(0.2~0.6)In(BT2-4000)Ir =(0.2~0.5)In(BT2-6300)t =0.1s~0.4s 4级 four steps
4
4
44
4
Ir4 Maximum
1200A(For BT2-2000、BT2-2500)
1000A(For BT2-1600)
1600A(For BT2-4000)
Maximum 2000A(For BT2-6300)
Maximum
Maximum
0.2 0.8 10 100
In
10.01
0.1
0.2
1
10
100
1000
t(s)
0.30.4
Maximum
Time/Current Curve of Type M25, M26 , H26 , P25 and P26 intelligent controller
(for load-monitoring pattern one)
·9·
1.0 GENERALDESCRIPTION
I (0.2~1)InLC1=
I (0.2~1)InLC2=
t =t /2(t =15,30,60,120,240,480s)C1 1 1
t =t /4(t =15,30,60,120,240,480s)C2 1 1
ILC2≤ ILC1
0.2 0.8 10 1001
In
0.1
1
100
1000
10000
t(s)
200
10
tC1
ILC2
ILC1
tC2
Time/Current Curve of Type M25 , M26 , H26 , P25 and H26 intelligent controller
for Load-monitoring pattern one
·10·
1.0 GENERALDESCRIPTION
0.2 0.8 10 1001
In
0.1
1
100
1000
10000
t(s)
10
60
0.4
ILC2
ILC1
tC1
tC2
I (0.2~1)InLC1=
I (0.2~1)InLC2=
t =t /2(t =15,30,60,120,240,480s)C1 1 1
t =60sC2
2.0 ACCEPTANCE
Check the type and specification of the breakers upon receiving. Remove the external package
carefully in order not to destroy the breakers.
3.0 STORAGE, TRANSPORTATION AND WEIGHT
The breaker is packed with wooden case and fixed on wooden crate by screws. If the breaker is
stored for a short period, please put it in the dry place with ventilation and cover it with waterproof
oilcloth.
Notice: ① Please put the breaker in the dry place without dust (the ambient temperature is
from -25℃ to +55℃ , the relative humidity is not more than 95% at 25℃ ) and corrosion of
chemical gas.
②The breaker should be open and put into the wooden case, the charging indicator (see
Fig.1-1, Fig.1-2 Preface) is at the position of DISCHARGED.
③Put the breaker or base on horizontal wooden stand (provided by the factory).
④Don't pile up breakers.
3.1 STORAGE
Put the breaker on the wooden stand horizontally and move it with fork lift. See Fig. 3-1.
3.2 TRANSPORTATION
Fig. 3-1
BT2
·11·
3.3 WEIGHT
See the following table: Unit: kg
Type RatedCurrent
BT2-1600
630
800
1000
1250
1600
3
4
3
4
3
4
3
4
3
4
3
4
3
4
·12·
400
200
BT2-2000
630
800
1000
1250
1600
2000
3
4
3
4
3
4
3
4
3
4
3
4
54.5
59.5
54.5
59.5
54.5
59.5
54.5
59.5
54.5
59.5
56
62
84.9
96
84.9
96
84.9
96
84.9
96
84.9
96
88
100
45
58
45
58
45
58
45
58
45
58
45
58
45
58
3.0 STORAGE, TRANSPORTATION AND WEIGHT
PoleNumber
Fixed Draw-out
28.8
36.5
28.8
36.5
28.8
36.5
28.8
36.5
28.8
36.5
28.8
36.5
28.8
36.5
BT2-4000
2000
2500
2900
3200
3600
4000
4000
5000
3
4
3
4
3
4
3
4
3
4
3
4
66
84.5
66
84.5
66
84.5
66
84.5
66
84.5
66
84.5
113.5
141.5
113.5
141.5
113.5
141.5
113.5
141.5
113.5
141.5
113.5
141.5
3
4
3
4
2000
2500
3
4
3
4
1250
1600
BT2-2500
3
4
3
4
3
4
BT2-6300
6300
·13·
65
78
95
110
65
78
95
110
65
78
95
110
65
78
95
110
135
166
227
280
135
166
227
280
135
166
227
280
3.0 STORAGE, TRANSPORTATION AND WEIGHT
Unit: kg
Type RatedCurrent
PoleNumber
Fixed Draw-out
Unscrew the cross screws ① (16 or 20 pieces) around the under part of the wooden case, lift
the wooden case and remove it ( See Fig. 4-1);
As for fixed breaker, just remove four STC4.8-C Screws together with washers for fixing the
breaker in the wooden stand③, then move it away from the stand;
As for draw-out breaker (See Fig. 4-2), turn the handle to pull out the main body till it is
obstructed (See7-3 for details). Lift up the main body from the draw-out socket and move it away.
Then remove four nuts of M10 and washers for fixing the socket with the wooden stand at the
bottom of draw-out socket in order to separate the socket from the wooden base. (Please make sure
the nuts and washers are already removed from the draw-out socket) Put the main body back into
the draw-out socket and finish the operations. (See7.3 for details)
④ ③
Check the following settings on the data plate, make sure they will satisfy your requirements
while making order.
Voltage of Shunt Release; 2. Voltage of Power-driven Operating Mechanism; 3. Voltage of
Closing electro-magnet; 4. Voltage of Intelligent Controller; 5. Voltage and Delayed Time of Under-
voltage Release; 6. Type of Auxiliary Switch
Check the items in package according to the packing list.
Do read the operation manual before the installation, operation and maintenance.
4.2 ITEMS TO CHECK BEFORE OPERATION
5.0 INSTALLATION
Put the breaker in the dry place where there is no dust, corrosive gas and explosive medium
and prevent it from striking. If the environment condition can’t be satisfied, protection grade of the
switchgear should be upgraded. Requirements of temperature, humidity and elevation see the
following table:
5.1 ENVIRONMENT CONDITION
Item
Ambient Temperature
Relative Humidity
Elevation
Norm
-5℃~+40℃ and the average is no more than +35℃ within 24 hours
The relative humidity of the gas is no more than 50% at the maximum temperature of
40℃. It may be higher at the lower temperature, for example, 90% at +20℃. Special
measures should be taken to prevent the breaker from dew caused by temperature
change.
≤2000m
·15·
4.0 UNPACKING AND NOTICE
Check insulation resistance of the breaker with megohm meter of 1000VDC, the value should
be no less than 20MΩwhen the ambient temperature is 25℃±5℃ and the relative humidity is
50%~70%.
Place to be tested: test the resistance between each phase and between phase and framework
when the breaker is closed; test the resistance between the incoming wire and outgoing wire for each
phase when the breaker is open.
5.2 PREPARATION
Take the main body out of the draw-out socket, then install the socket into the switchboard, fix
the socket with four screws of M10 (with washers) (See Fig. 5-1). The applied torque is from 17.7 N.
m to 22.6N. m. At last put the main body into the socket.
5.3 INSTALLATION OF DRAW-OUT BREAKER
Fig. 5-1
Put the breaker into switchboard, fix it with four screws of M10 (with washers). The applied
torque is from 17.7N. m to 22.6N. m (See Fig. 5-2)
5.4 INSTALLATION OF FIXED BREAKER
Fig. 5-2
·16·
5.0 INSTALLATION
Place for fixing the socket
Clean and dry the grounding point with cloth before the grounding of fixed and draw-out
breakers.
① Grounding of fixed breaker
Fix the PE cable on the grounding busbar of switchboard with M10 screw directly, cross
section of the cable see IEC 60439-1.
6.2 APPLIED TORQUE WHEN BUSBAR IS IN CONNECTION WITH WIRING TERMINALS
6.0 ELECTRICAL WIRING
Electrical wiring must be done by the professional technicians.
M10
M12
M16
17.7~22.6
31.4~39.2
78.5~98.1
35.4~45.2
62.8~78.4
157.0~196.2
6.3 GROUNDING
·17·
6.1 SCHEMATIC DIAGRAM FOR SECONDARY CIRCUIT TERMINALS OF BT2-1600 CIRCUIT BREAKER
Diameter of Screw Applied torque N.m with spring spacer Applied torque N.m with flat spacer
Insert the slotted point screw driver (Φ3) into the square hole of the connector insert the
conductor wire into the round hole and at last remove the screw driver
Draw-out
6.4 POWER LOSS AND DERATING COEFFICIENT
6.4.1 Power Loss
The power loss is the wastage measured by which the circuit breaker is electrified with frame current
Inm (environmental temperature +40 ).℃
6.4.2 Derating Coefficient
The following table shows continual current-loading capacity of circuit breakers at different ambient
environmental temperature and under the conditions of the satisfaction of conventional heating in
IEC 60947-2
·18·
BT2-1600
BT2-6300
285
874
315
924
BT2-2000
BT2-2500
BT2-4000 795 854
146
445
161
492
+40℃ +45℃ +50℃ +55℃ +60℃
1Inm
1Inm
1Inm
0.97Inm
0.99Inm
0.96Inm
0.91Inm
0.96Inm
0.90Inm
0.87Inm
0.90Inm
0.86Inm
0.82Inm
0.87Inm
0.80Inm
1Inm
1Inm
0.95Inm
0.93Inm
0.89Inm
0.87Inm
0.85Inm
0.82Inm
0.78Inm
0.75Inm
Inm=2000A
Inm=1600A
Inm=2500A
Inm=4000A
Inm=6300A
6.0 ELECTRICAL WIRING
Power Loss (W)Type
Fixed
Ambient environmentaltemperature
Continualcurrent-loadingcapacity
② Grounding of draw-out breaker
Fix the PE cable on the grounding busbar
of switchboard with the grounding screw on the
left side plate, cross section of the cable see
IEC 60439-1
The specifications of copper bars in the above table are introduced under which the circuit breakers by open
installation are at maximum ambient temperature of 40 and satisfy the conventional heating condition in IEC60947-2℃
6.5 SPECIFICATION OF THE COPPER BUSBAR WIRED IN THE PRIMARY CIRCUIT OF DRAW-OUT BREAKER
·19·
Size(mm×mm)
630
630
400
200
2
2
2
2
3
50 5×
20 5×
50 5×
800
800
2 60 5×
1000
1000
2 60 5×
1250
1250
1250
3
4
3
60 5×
60 5×
1600
1600
1600
2
2
60 10×
60 10×
60 10×
2000
2000
2000
2000
3
3
3
60 10×
50 10×
60 10×
100 5×
2500
2500
4
4
100 5×
2900 3 100 10×
3200 4 100 10×
3600 4
6
8
100 10×
4000
4000
5000
6300
4000
6300
5
5
100 10×
100 10×
100 10×
100 10×
Rated Frame Current Inm(A) Rated Current In(A)
2500
1600
1
1
40 5×
40 5×
50 5×
40 5×
6.0 ELECTRICAL WIRING
Busbar specification
Amount
6.4.3 Derating capacity for high altitude
If altitude is over 2000m, the electrical performance of breaker could be corrected as follows:
Altitude(m)
Power frequency with stand voltage(V)
Correction factor for working current
2000
3500
1
3000
3150
0.93
4000
2500
0.88
5000
2000
0.82
7.0 OPERATION
7.1 Charging Operation
Manual charging operation
Turn the energy-charging handle up and down for several times (about 6-7 times) till there
isn t any feeling of repulsion.
①
’
Fig. 7-1
② “ ”
“ ”
As the charging operation finishes, Charged/Discharged indicator will be at
Charged position.
Power-driven charging operation
As the control circuit is electrified, power-driven charging operation will start automatically
(the control circuit has already charged automatically in advance)
7.2 On and off operation
·24·
7.2.1 Manual switching on and off
Switching-on
As the circuit breaker is charged and switched off, and when ready-for-switching-on
indicates OK , push the black button (See Fig. 7-2), the circuit breaker will be switched
on and On/off indicator shifts from red to green .
①
“ ” “ ”
“ ” “Ο” “ ”
BT2-1600 Circuit Breaker BT2 with frame current of 2000A and above
Switching-off
As the circuit breaker is switched on, push the red button (See Fig. 7-3), it will be
switched off at once. At this time, On/off indicator should be at the position of red .
②
“Ο”
“ ” “Ο”
Fig. 7-2
Note: When switching-off lock mechanism is installed, it has to be unlocked
before the above operation.
Fig. 7-3
·25·
7.2.2 Power-driven switching on and off
Switching-on
As the circuit breaker is charged and switched off, it can be switched on by providing the
closing electro-magnet with rated voltage.
Switching-off
As the circuit breaker is switched on, it can be switched off by providing the shunt release with
rated voltage.
①
②
7.0 OPERATION
BT2-1600 Circuit Breaker
BT2-1600 Circuit Breaker
BT2 with frame current of 2000A and above
BT2 with frame current of 2000A and above
7.3 OPERATION OF DRAW-OUT BREAKER
7.3.1 Operation of BT2-1600 draw-out circuit breaker
7.3.1.1 Push the main body into the socket
Pull out the slideway, See Fig. 7-4①
Fig. 7-4
Put the main body on the slideway, See Fig. 7-5, and push it inside the socket till it can't be
pushed any more, See Fig. 7-6.
②
Fig. 7-6
·26·
Fig. 7-5
7.0 OPERATION
Push the slideway into the socket, See Fig. 7-7③
Fig. 7-7
Pull out of the rocker from its storage hole and fully plug it into the hole at the bottom of draw-out
socket, move unlock button to the left side, See Fig. 7-8
④
“ ”
·27·
Fig. 7-8
7.0 OPERATION
Turn the rocker in clockwise. When the indicator is at the position of test , the circuit
breaker will be locked automatically and the rocker can not be turned.
The unlock button has to be moved to the left, and the rocker continues to be turned in
clockwise. When the indicator is at the position of connected , the circuit breaker will be locked
automatically ,pull out the rocker and put it back to the original place, See Fig. 7-9
⑤ “ ”
“ ”
Fig. 7-9
Fig. 7-10
·28·
7.0 OPERATION
7.3.1.2 Pull out the main body
Move the unlock button in order to unlock the mechanism at the position of connected
at first, then turn the rocker to move the main body from connected to separated (turn the
rocker in counter clockwise, notice in this process: the button is locked automatically at the position
of test , the unlock button has to be moved in order to pull out the main body), when the position
indicates separated and it is locked, the rocker can be pulled out.
① “ ”
“ ” “ ”
“ ”
“ ”
Pull out the slideway, See Fig. 7-11②
Pull the main body out of the draw-out socket, See Fig. 7-12, and take out the main body,
See Fig. 7-13
③
Push the slideway back into the socket, See Fig. 7-14④
·29·
Fig. 7-11
Fig. 7-12 Fig. 7-13
Fig. 7-14
7.0 OPERATION
Lock catch
Fig. 7-15
Fig. 7-16
·30·
7.3.2.1 Push the main body into the socket
① Press the lock catch with thumb, pull out the slideway till it can't be moved
② Put the main body on the slideway as shown in Fig. 7-15, note that the main body should
be stuck right on the slideway.
7.3.2 Operation of draw-out BT2-2000 circuit breaker with frame current 2000 and
above
'③ “ ”Push the main body inside the socket till it can t pushed any more and click occurs,
See Fig. 7-16
7.0 OPERATION
Fig. 7-17
Fig. 7-18
·31·
13
17
13
15
16
7.0 OPERATION
④ Pull out of the rocker from its storage hole 16 and fully plug it into the operation hole 15 at
the bottom of draw-out socket, push“unlock button” 13 to the left side, See Fig. 7-17
⑤ Turn the rocker in clockwise. When the indicator 17 is at the position of “ test” , the
circuit breaker will be locked automatically and the rocker can not be turned.
The unlock button 13 has to be pushed to the left, and the rocker continues to be turned in
clockwise till it can't be moved. When the indicator is at the position of “connected”, the rocker
can be pulled out to the original place.
7.3.2.2 Pull out the main body
① Move the “ unlock button” in order to unlock the mechanism at the position of
“ connected” at first, then turn the rocker to move the main body from “ connected” to
“ separated” (turn the rocker in counter clockwise, notice in this process: the button is locked
automatically at the position of“test”, the“unlock button” has to be moved in order to pull out
the main body)
Fig. 7-19
Fig. 7-20
Fig. 7-21
·32·
Lock catch
7.0 OPERATION
② After the rocker is pulled out, press the lock catch to pull out the main body as shown in Fig.
7-20, note that when the main body is pulled out, prevent it from pouring out and falling due to
forward move of centre-of-gravity.
③ Take the main body out of the draw-out socket as shown in Fig. 7-21, then push the
slideway back into the socket.
7.4 LOCK AT THE POSITION OF“SEPARATED” BY SAFETY PADLOCK MECHANISM FOR THE DRAW-OUT SOCKET
Fig. 7-22
·33·
7.0 OPERATION
Operating process as follows:
① Pull out the locking stick as shown in the Fig;
② Pierce the stick through the padlock, at this time, the circuit breaker can't be moved from
“separated” to“test” or“connected”.
Unlock buttonThree-position indication
Note: the padlock should be provided by users themselves.
“ ”Separated position
Safety padlock mechanism
BT2-1600 Circuit Breaker
BT2-2000 and above
“ ”Separated position
Safety padlock mechanism Unlock button Three-position indication
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
8.1 SETTING AND USE OF TYPE L25 INTELLIGENT CONTROLLER
8.1.1 Panel illustrations
1. Light columnar indication of loading rate (%Ir )2. Indication of controller power supply3. Indication of long-time delayed fault4. Indication of short-time delayed fault5. Indication of instantaneous fault6. Adjustment of instantaneous operating current7. Adjustment of short-time delayed current8. Clear button
9. Adjustment of imitative test current10. Test terminal (for the Factory s testing and checking)11. Test button12. Adjustment of short-time delayed time13. Adjustment of long-time delayed time14. Adjustment of long-time delayed current15. Indication of alarm and trip
1
“ ”
’
·34·
1
2
34
5
6
7
8
9
1011
12
13
14
15
8.1.2 Setting of protection parameters
Parameters of the intelligent controller can be set in the network while the auxiliary electric
source is provided by controller’s power supply ( Wiring pattern see Chapter 6.6)
For example: Rated current In is equal to 2500A; the parameters such as Ir =0.8In, t =480s;
Ir =8Ir , t =0.2s; Ir =10Ir orginally set can be changed as follows: Ir =1750A, t =60s; Ir =14kA,
t =0.2s (the function of inverse time protection I t should be cancelled); Ir =17.5kA
Operate as follows:
Convert the above current settings into the multiple of In (or Ir ) so that it will be easy to be
adjusted.
Ir =0.7In, t =60s
Ir =8Ir , t =0.2s (I t OFF)
Ir =10Ir
Turn the knob to the target point with screw driver, See Fig. Below
1 1
2 1 2 3 1 1 1 2
22
3
1
1 1
2 1 2
3 1
2
Note: New settings will be valid after 5 seconds. In case that fault happens within this period,
Please operate the circuit breaker in terms of the original settings.
8.1.3 Test
Push“test” button to check the setting of test current
If only checking current-time feature of the controller: make the circuit breaker be switched
off before test with auxiliary power supply.
If checking current-time feature of the controller and the operation of operating mechanism at
the same time: make the circuit breaker be switched on before test.
·35·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
trip test
clear
test
For example:① Set the test current on 1.5In as shown in Fig. Above, push the test button once
again, the delayed operating time should be within the range of t’(stipulated time)±15%.
Note: t’ (stipulated time) must be converted. In this case, if the value of Ir (equal to 0.7In)
and the value of t (equal to 60s) is adjusted, put the value of Ir and the value of t into the formula:
(1.5Ir ) t =(1.5Ir ) t’, the value of t’ can be worked out.
② Set the test current on 10In, then I will be 10 multiple with 2500, equal to 25kA which
keeps within the range of instantaneous prection Ir . Press test button and the circuit breaker will
operate at once.
③ Push the button of“clear” and“RESET” after test in order to operate the circuit
breaker regularly.
Note: In order to avoid mistakes, turn the knob for setting the test current to the right value
prior to each test, and the setting is only effective within 2 minutes. If over 2 minutes, turn the knob
once again even though test current is the same.
8.1.4 Indication of alarm and trip
Light columnar indication of Real-time current (loading rate in percentage of Ir1), indication
of alarm and trip see the Fig. Below.
1
1 1
1 1 1
12
1 12
1 1
3
A
○
●
○
●
·36·
90%
50%
20%
90
105
%Ir1
I1 I2 I3 IN
Ir 2 Ir2 Ir3
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
Light off (real-time current under A line)
Yellow light on (real-time current above A line and
under 105%)
Yellow Light flash (real-time current above 105%)
Red light on (tripped)
The corresponding light will be on after the circuit breaker is tripped.
P owe r ind icato r
Trip ped/a larm
8.2 SETTING AND USE OF TYPE M25, M26 AND H26 INTELLIGENT CONTROLLER
1.
2.3.4.5.
6.7.8.9.
10.
11.12.
13.14.
15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.
8.2.1 Panel illustrations8.2.1.1 Type M25 and M26 Panel
·37·
U12 U13 U31 MIN
test
V
I1 I2 I3 MAX
A
kA
S
tr ip Ir1 Ir2 Ir3
MEM ILC1 ILC 2
M 25 Inetlligent Controller
fault
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
8.1.5 Resume operation of the circuit breaker
To re-operate the cirucit breaker after being tripped due to fault: press clear button andpress RESET button on the panel, then the circuit breaker will be switched on.
“ ”“ ”
Three phases of line voltage and indication of mimimumline voltage in operationVoltage indication screenVoltage unitTest indicationIndication of three phases current, neutral phase current,earthing fault current and maximum phase current inoperationCurrent and time indication screenCurrent unit ACurrent unit kATime unitEarthing fault indication, overload long-time delayedfault indication, short-circuit short-time delayed faultindication, instantaneous fault indicationIndication of earthing fault current setting (with alarm)Indication of long-time delayed current setting (withalarm)Indication of long-time delayed operating timeIndication of short-time delayed current setting (withalarm)Indication of short-time delayed operating time settingIndication of instantaneous current settingIndication of earthing fault operating time settingLoad mointoring signal 2Load mointoring signal 1Memory indicationConsecutive decrease of setting values"mem"buttonWearing indication button"clear" buttonPower supply socket for test (DC24V)"non-trip" test button"trip" test button"inspect fault" buttonCurrent indication buttonVoltage indication button"set" buttonConsecutive increase of setting valuesTrip indication
Note: M25 has the same function with M26 except withoutearthing fault protection.
trip test
clear
test
U12 U13 U31 MIN
V
I1 I2 I3 MAX
A
kA
S
Ir1 Ir2 Ir3
ILC1 ILC2
1
2345
678
9
1011121314151617181920
21
222324
25
2627
28
2930
31
32
33
IG
Ir4
M 26 Inetlligent Cont ro lle r
test
faulttr ip
M EM
8.2.1.2 Type H26 panel
8.2.2 Current, voltage (optional) indication
Fig. 8-1
·38·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
1.
2.3.4.5.
6.7.8.9.
10.
11.12.
13.14.
15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.
Three phases of line voltage and indication of mimimumline voltage in operationVoltage indication screenVoltage unitTest indicationIndication of three phases current, neutral phase current,earthing fault current and maximum phase current inoperationCurrent and time indication screenCurrent unit ACurrent unit kATime unitEarthing fault indication, overload long-time delayedfault indication, short-circuit short-time delayed faultindication, instantaneous fault indicationIndication of earthing fault current setting (with alarm)Indication of long-time delayed current setting (withalarm)Indication of long-time delayed operating timeIndication of short-time delayed current setting (withalarm)Indication of short-time delayed operating time settingIndication of instantaneous current settingIndication of earthing fault operating time settingLoad mointoring signal 2Load mointoring signal 1Memory indicationConsecutive decrease of setting values"mem" buttonWearing indication button"clear" buttonPower supply socket for test (DC24V)"non-trip" test button"trip" test button"inspect fault" buttonCurrent indication buttonVoltage indication button"set" buttonConsecutive increase of setting valuesTrip indicationCommunicaionStation No.Remote control
Current meter
Voltage meter
Current meter
set
U I
inspectfault
trip non-trip
%
set
U I
inspectfault
trip non-trip
clear
mem
test
test
H26
1
2345
6789
101112131415161718192021
222324
25
2627
282930
31
32
33
343536
C OMM
U12 U13 U31 MIN
I1 I2 I3 MAX
A
kA
S
Ir1 Ir2 Ir3
ILC 1 ILC2
IG
Ir4
IN
V
M EM
t rip
fau lt
test
AD DR RE MH26 Intelligent Controller
8.2.2.1 Current meter The maximum current value in three phases will display in operation
[the current value as shown in the Fig. 8-1 indicated in the current meter is the maximum current I
in three phases(light of I and MAX on), equal to 1600A. Press the button of“I” to display I (four
poles), I (Type M26 and H26) and the real-time value of I ,I ,I in circulation, the maximum real-
time value will display again after 5 minutes without operation.
8.2.2.2 Voltage meter The minimum voltage value of three phases will display in operation [the
voltage value as shown in the Fig. 8-1 indicated in the voltage meter is the minimum voltage U in
three phases (Light of U and MIN on), equal to 380V]. Press the button of“U” to display U , U
and U in circulation, the minimum real-time value will display again after 5 minutes without
operation.
8.2.3 Setting of protection parameters
Parameters of the intelligent controller can be set in the network, but at this time the load
current should be less than the setting current. There are two ways of power supply for the controller:
(1) auxiliary power supply; (2) DC24V input from the panel.
Operate as follows: (No earthing fault protection for Type M25, without the setting of Ir and t )
(1) Display: Press“set” button to choose the desired parameters such as Ir , t , Ir , Ir , t ,
I and I . When the light is on, the corresponding value will display on the screen.
(2) Adjustment: Press“Δ” (increase by degrees) or“ ” (decrease by degrees) button,
adjust the displayed value to the desired or approximate value. Press“Δ”button, Ir and Ir can
be“OFF”, short-circuit short-time delayed and short-circuit instantaneous protection will be
shut.
(3) Save: Press“mem” button, the corresponding light will flash once, which means the
setting value has been saved.
[Example] Take the controller with In=1600A as an example; the original setting values of
Ir =1600A, t =30s; Ir =9.6kA, t =0.2s; Ir =19.5kA; Ir =1200A, t =0.4s.
2
2 N
G 1 2 3
31
31 12 23
31
4 4
1 1 3 4 4
LC1 LC2
2 3
1 1 2 2 3 4 4
△
·39·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
·40·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) When the control iselectrified, the screenwill display 0 forthe operating currentof the main circuit.
“ ”
b) Press "set" buttonand when the "Ir "light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 1600A.
1
c) Adjustment: Pressbutton, the
value on the screenwill decrease 20A bydegrees till the screendisplays 1380A.
“ ▽”
d) Press "mem" buttonand the new settingwill take effect.
BT2-1600
1. The seting value of Ir is equal to 1380A (t is still 30s), operate as follows:1 1
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
·41·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) When the control iselectrified, the screenwill display 0 forthe operating currentof the main circuit.
“ ”
b) Press "set" buttonand when the "Ir "light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 1600A.
1
c) Adjustment: Pressbutton, the
value on the screenwill decrease 20A bydegrees till the screendisplays 1380A.
“ ▽”
d) Press "mem" buttonand the new settingwill take effect.
BT2-2000 and above
set
U I
tripinspectfault
mem
clear
non-tr ip
MEM
trip
fault
test
%
set
U I
tripinspectfau lt
mem
clear
n on-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
In=1600A
In=1600A
In=1600A
In=1600A
2. The re-setting value of t is equal to 0.3s and the function of I t is shut off, operate as follows:22
·42·
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "t "light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 0.2s.
2b) Adjustment: Press
button, thevalue on the screenwill increase 0.1s bydegrees till the screendisplays the originals e t t i n g va l u e o f
OFF 0.3s .
“ Δ ”
“ ”
c) Press "mem" buttonand the new settingwill take effect.
BT2-1600
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
·43·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "t "light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 0.2s.
2b) Adjustment: Press
button, thevalue on the screenwill increase 0.1s bydegrees till the screendisplays the originals e t t i n g va l u e o f
OFF 0.3s .
“ Δ ”
“ ”
c) Press "mem" buttonand the new settingwill take effect.
BT2-2000 and above
set
U I
tripinspectfault
mem
clear
n on-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
In=1600A In=1600A
In=1600A
3. The earthing fault protection feature (Only for Type M26 and H26) is shut off, operate as follows:
Note: All protection parameters can beadjusted by following the above steps.
Check: After the setting operation is over,press“clear” button and“set” button insuccession to check the displayed new value ofprotection parameters, which should be thesame as the desired values. (Note: Thecontroller will recover its displaying of currentif no buttons are pressed within 10 seconds.)
·44·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "t4"light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 0.4s.
b) Adjustment: Pressbutton till
t h e s c r ee n w i l ldisplay OFF .
“Δ ”
“ ”
c) Press "mem" buttonand the new settingwill take effect.
BT2-1600
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
set
U I
trip
inspectfault
m em
clear
non-trip
MEM
trip
fault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
trip
fault
test
Note: All protection parameters can beadjusted by following the above steps.
Check: After the setting operation is over,press“clear” button and“set” button insuccession to check the displayed new value ofprotection parameters, which should be thesame as the desired values. (Note: Thecontroller will recover its displaying of currentif no buttons are pressed within 10 seconds.)
·45·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "t4"light is on, the screenw i l l d i s p l a y t h eoriginal setting valueof 0.4s.
b) Adjustment: Pressbutton till
t h e s c r ee n w i l ldisplay OFF .
“Δ ”
“ ”
c) Press "mem" buttonand the new settingwill take effect.
BT2-2000 and above
se t
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
trip
fault
test
%
In=1600A In=1600A
In=1600A
8.2.4 Test
The protection characteristics including long-time delay, short-time delay, instantaneous andearthing fault can be tested. There are two kinds of testing ways:“trip” test and“non-trip” test.As for the “ trip” test, set the current value at which the circuit breaker will trip, press“ trip”button and the circuit breaker should be switched off (In general, this test is carried without load);As for the “ non-trip” test, set the current value at which the circuit breaker will trip, press“non-trip” button and the circuit breaker shouldn’t be switched off.
[Example] Test of long-time delayed operating features (1.5Ir )
1. As first, check the original setting value of Ir and t , operate as follows:
1
1 1
·46·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "Ir "light is on, the screenwi l l dis p la y th eoriginal setting valueof 1380A.
1 b) Press set button andwhen the t light is on,the screen will display theoriginal setting value of 30s.
“ ”“ ”1
a) Press "set" buttonand when the "Ir "light is on, the screenwi l l dis p la y th eoriginal setting valueof 1380A.
1 b) Press set button andwhen the t light is on,the screen will display theoriginal setting value of 30s.
“ ”“ ”1
BT2-1600
BT2-2000 and above
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
set
U I
tripinspectfault
mem
clear
non-trip
MEM
tripfault
test
%
set
U I
tripinspectfault
mem
clear
non-trip
MEM
tripfault
test
%
In=1600A In=1600A
2. The setting of parameters for test
a) Press "set" buttonand when the "Ir "l igh t is on, th escreen will displaythe original settingvalue of 1380A.
1 b) Press set button andwhen the t light is on,the screen will display theoriginal setting value of 30s.
“ ”“ ”1
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press "set" buttonand when the "Ir "l igh t is on, th escreen will displaythe original settingvalue of 1380A.
1 b) Press set button andwhen the t light is on,the screen will display theoriginal setting value of 30s.
“ ”“ ”1
BT2-1600
BT2-2000 and above
·47·
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
set
U I
trip
inspectfault
mem
clear
non-trip
MEM
tripfault
test
U I
tripinspectfault
mem
clear
non-trip
MEM
tripfault
test
%
set
U I
tripinspectfaul t
clear
non-trip
MEM
tripfault
test
%
In=1600A In=1600A
3. Test operation
·48·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) Press non-tripb u t t o n a n d t h ecorresponding light of
test will be on.
“ ”
“ ”
b) The screen will display0 and the corresponding
light flashs. With the settingtime of 30s elapsed, theco r re sp o n d in g l ig h t o f
trip , Ir1 and faultwill be on, which means thecompletion of test operation.
“ ”
“ ” “ ”
a) Press non-tripb u t t o n a n d t h ecorresponding light of
test will be on.
“ ”
“ ”
b) The screen will display0 and the corresponding
light flashs. With the settingtime of 30s elapsed, theco r re sp o n d in g l ig h t o f
trip , Ir1 and faultwill be on, which means thecompletion of test operation.
“ ”
“ ” “ ”
BT2-1600
BT2-2000 and above
set
U I
trip
inspectfault
mem
non-trip
MEM
tripfault
test
set
U I
trip
inspectfault
mem
non-trip
MEM
tripfault
test
clear
set
U I
tripinspectfault
non-trip
MEM
tripfault
test
%
non-trip
set
U I
tripinspectfault
MEM
tripfault
test
%
mem
clear
In=1600 A In=1600A
4. Checking the test result
a) With the completion of test operation, press “inspect fault” button and“I” button tillthe light of“I” (“I ”,“I”) is on (interval between two steps should be within 5s), at the timewhich the screen displays the imitative breaking current value of 2060A.
b) Press“I” button again, the light of“A” will be off and the light of“s” will be on, atthe time which the screen displays the imitative operating time value of 30.60s within the range ofthe setting value: t (30s)±15%, which keeps in accordance with the setting operating features.
1 2 3
1
BT2-1600
BT2-2000 and above
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
·49·
U I
trip
inspectfault
mem
non-tr ip
MEM
tripfault
test
clear U I
trip
inspectfault
mem
non-trip
MEM
tripfault
test
clear
U I
tripinspectfault non-trip
tripfault
test
%
MEM
mem
clear U I
tripinspectfault non-trip
tripfault
test
%
MEM
mem
clear
In=1600A In=1600A
8.2.6 Breaking due to faultAfter the circuit breaker is tripped due to fault, the controller will display fault current value,
operating time, fault phase, fault type and tripping state. The data on panel as shown in the Fig.:●“trip” light is on● Breaking current:2060A● Fault phase: phase A when“I1” light is on● Fault type: overload long-time delay●“Ir ” light is on1
8.2.5 Alarm indication
1. Load-monitoring alarm
2. Overload (fault) alarm
·50·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
a) The operating current ofmonitored load reaches thesetting values of I andI , the light of Iand I will flash.
LC1
LC2 LC1
LC2
“ ”“ ”
b) After the settingvalues of delayedtime tc1 and tc , thec o n t r o l le r w i l loutput the contactsignal and the lightof I and
I will bes w i t c h e d f r o mflashing to beinglightened.
2
LC1
LC2
“ ”“ ”
When the operating currentis within the range of1.05Ir to 1.20Ir , the lightof Ir will flash.
1 1
1“ ”
BT2-1600 BT2-2000 and above
MEM
trip
fault
MEM
MEM
U I
tripinspectfault non-trip
tripfault
test
%
MEM
mem
clear
set
U I
trip
inspectfault
mem
non-trip
MEM
tripfault
test
clear
set
In=1600A
Press“inspect fault” button and then press“I” button
·51·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
8.2.7 Fault memoryAfter the circuit breaker is tripped due to circuit fault, the controller will display fault type,
fault phase and breaking current value at once. If the breaking time should be checked, operate asfollows: press“clear” button
BT2-1600 BT2-2000 and above
BT2-1600 BT2-2000 and above
U I
trip
inspectfault
mem
non-trip
MEM
tripfault
test
clear
set
U I
tripinspectfault
non-trip
tripfault
test
%
MEM
mem
clear
set
U I
trip
inspectfault
mem
non-trip
clear
MEM
tripfault
test
U I
tripinspectfault non-trip
tripfault
test
%
MEM
mem
clear
In=1600A
In=1600A
Press“I” button again to display the breaking time
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
·52·
trip
fault
test
MEM
8.2.8 Resume operationTo resume operation after the circuit breaker trips due to fault: press“clear” button, press
“reset” button on the panel and then the circuit breaker will be switched on.
8.2.9 Other① Contact wearing indication
Press "inspect fault" to displaythe value (10 on the screen)which stands for the wearingdegree of the contact.
Press "%" to displaythe value (10 on thescreen) which standsfor the wearing degreeof the contact.
BT2-1600 BT2-2000 and above
U I
trip
inspectfault
non-trip
MEM
trip
fault
test
clear
set
U I
tripinspectfault
non-trip
% clear
set
trip
fault
test
MEM
In=1600A
·53·
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
② Self-diagonosis
If the screen displays" E r r 8 " , t h e r e i ssomething wrong withthe program saving.
If the screen displaysErr9 , the extra high
temperature inside ofthe controller exceeds80 5 .
“ ”
℃± ℃trip
fault
test
MEM
trip
fault
test
MEM
8.2.10
BT2-1600
BT2-2000 and above
U I
trip
inspectfault
non-trip
clear
set
U I
tripinspectfault
non-trip
% clear
set
Press the "set" button until the "ADDR" light is on,meanwhile, when the "current and time screen"displays"A×××","b×××"and"P ×",it represents entering of communicationaddress, baud rate and odd-even parity bit adjustment state,thenpress"△"" "to adjust, after adjustment,press"mem"button to savethe setting.
△
The communication parameter adjustment of the H26 Controller
·54·
8.3 Characteristic setting and use of P25 and P26 controllerRefer to BT2 Intelligent Universal Circuit Breaker-P25 & P26 Intelligent Controller-
Operation Manual for details.8.4 Communication function of H26, P25 and P26 controller“Four remote function could be realized through a communication ports by upper devices.
It could transmit datas of real-time current, voltage, fundamental current, fundamental voltage,power, power factor, energy, frequency, harmonic voltage's distortion and total harmonic voltage'sand current’ s distortion(only current and voltage for H26); read and modify setting values ofbreakers; read the product code, type, alarm signal, fault record, position of main body, states ofready-for switching on and position of close, etc; remote open or close breaker.
① When the breaker is communicating with the upper devices, “Communication” on thecontroller will flash.
② When “Remote” is lighten on, upper devices could remote-control the breaker(open,close or modidy setting values). If users want to set values on the breaker, “Clear” should bepressed and users should wait until the“Remote” is lights out.
③ Press addresses(site No., baud rate and parity check bit) of breaker could be referred bypressing Voltage Display button on the control panel of breaker.
● Parameters of Serial Port① RS485 interface and ModBUS-RTU mode are applied(please contact with the producer for
details);② Baud rate: 19200bps(1200, 2400, 4800, 9600 and 38400 are also supported);③ Communication adress: 1-119;④ Frame format: 1 start bit, 8 bits, 1 stop bit and even check(no check and odd check are
supported)● Note:① Communication line is twisted pairs shielded line, the cross section area of which is more
than 0.34mm . The Max. distance between lines is 1200m. The communication distance could beprolonged by repeaters.
② 1 line could connect 32 communicatable breakers (16 breakers with components of draw-out socket communication module).
③ Parameters of serial port should match with each other so that the upper devices couldcommunicate with breakers, for the communication addresses of breakers in the samecommunication line is different.
④ Secondary wiring of communicatable breakers should be connected according to Picture6.6.2(BT2-1600) and 6.6.4(BT2-2000~6300).
● Connection of terminals
”
2
① Terminal 8 to RS-485, Data+(A); Terminal 10 to RS-485, Data+(B); Terminal 12 to SH.② Please do correctly connect the communication lines, use shielded cables and avoid closing
to strong electricity lines.
Terminal
8
10
12
Signal
DATA+(A)
DATA-(B)
SH
Function
Receive/send data +
-
connect shielding layer
Receive/send data
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
Note: As an option, this accessory is necessory when remote reading of main body postions of draw-outbreakers is required.
Components of draw-outsocket communicationmodule
BT2
Moniter computer
RS232
RS485
RS232/RS485Converter
DATA+
DATA- Mod BUS
BT2
BT2 BT2
Note:① Please protect the controller against dust, humidity and mechanical damage while setting.②Make sure Ir1<Ir2<Ir3 while setting parameters again
④ If the circuit breaker trips due to fault, remove the troubles in terms of the indications on the panel beforethe circuit breaker is in operation again.
③ The following items should be checked by technicians before operating the circuit breaker: whether thesetting of parameters is correct, whther the intelligent controller is cleared and resetted, whether the circuit breakeris in normal condition and should be tested. Inspect the circuit breaker while its operation. Get rid of any faults orabnormalities in time.
8.5 Other Functions① Self-diagnosis: this function is to check and protect the circuit breaker in its operation.
Should the temperature inside the controller exceed 80℃±5℃ , alarm signal will be send out atonce (the controller is still in normal operation)
② Thermal memory: the memory function imitating the feature of bimetal is available when thecontroller operates due to overload or short-circuit short-time delay in the circuit. The energy storeddue to overload will discharge in 10 minutes, while the energy stored due to short-circuit short-timedelay will discharge in 5 minutes. During this period, if the circuit breaker is switched on, thedelayed operating time will be shortened due to overload or short-time delay. Therefore, the circuitor electrical devices can be protected.
③ Fault memory: the intelligent controller can display fault type, fault phase, fault curernt andbreaking time after the circuit breaker breaks due to fault.
④ MCR:Should short-circuit short-time delay happen while the circuit breaker is in theprocess of being switched on or the controller is initialized by being electrified, the circuit breakerwill be switched off instantaneously without time delay.
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
·55·
When several of circuit breakers are linked together up and down, zone selective interlock canensure fully-selective protection of circuit breakers at up-stream or down-stream so as to reducethe range of operation by fault and the breaking time of circuit breakers. This function serves forshort-circuit short-time delay (I t OFF) and earthing fault protection of circuit breakers.
As the sketch shown above, control lines can interlock with other units of circuit breakersequipped with intelligent controllers of Type M25, M26 and H26.
After detecting the fault, the intelligent controller (zone 2) will send out a signal to circuitbreakers (zone 1) at higher level and check whether the signal of circuit breakers (zone 3) at lowerlevel arrives. If circuit breakers at lower level send out a signal, the circuit breaker will be switchedon at the time duration of release delay; if circuit breaker at lower level don’t send out a signal, thecircuit breaker will break at once no matter whether the release has the protection of delay.
2
Note: 21, 22, 23 and 24 serve as the wiring terminals of secondary circuit.
Busbar
Zone1
Circuit Breaker at up-stream level Release delay t2
21
22
23
24
Control lineControl line
Fault
Circuit breaker atdown-stream level
21
22
23
24
21
22
23
24
21
22
23
24
·56·
Busbar
Release delay t2Zone2
Control lineControl lineBusbar
Zone3
8.0 SETTING AND USE OF INTELLIGENT CONTROLLER
⑤ Zone Selective Interlock (ZSI)Zone Selective Interlock (ZSI) (for Type M25, M26 and H26 intelligent controller)
9.0 CHECKING
Debug and check the following items in the table:
1
2
3
4
5
6
7
10.0 TRIAL OPERATION
Check the following items before its operation:① Check whether the wiring is correct② Make sure that terminals connection and screws are fixed firmly③ Reset button after faulty trip should be in the state of “reset” on the panel of intelligent
Do not operate the breaker in the environment of explosive gas, otherwiseexplosion may happen;
Do not operate the breaker in the environment of corrosive gas,otherwise,the insulation and metal parts may be damaged.
10.1 CHECK AND PREPARATION
·57·
No. Items to check Procedure Checking operation
Operating mechanism
Motor-driven operatingmechanism
Under-voltage release
Shunt release
Closing electromagnet
“ ”Switching-off lockingdevice
Auxiliary Switch
Charge the breaker and switch it on andoff for several times by hand (the under-voltage release should be electrified inadvance)
Provide the charging motor with powersupply, switch the breaker on and off forseveral times
Provide the under-voltage release withpower supply, the circuit breaker shouldbe switched on; the circuit breakershould be switched off without powersupply of the under-voltage release
Provide the shunt release with powersupply after the circuit breaker isswitched off
Provide the closing electromagnet withpower supply after the breaker isswitched on
Switch the breaker off, press theswitching-off button while turning the
key in counter clockwise, then pull it out
Provide the corresponding contact withsignal
Check whether themechanism runs smoothly andwhether the switching on andoff is free and easy
Check whether the chargingmotor works normally withoutnoise; whether the breaker isswitched off
Check whether the breakercan be switched on normally,whether the indication iscorrect, whether the breakeris switched off
Check whether the breakercan be switched off normally
Check whether the breakercan be switched on normally
Check whether the breakercan t be switched on byhand or by motor’
Check whether the signal isnormal
controller.④ Ambient environment is ventilated.
① Confirm that there is no abnomality according to 10.1 before trial operation② As for the draw-out circuit breaker, the main body should be in the position of“test”③ The operating mechanism starts to be charged as it is electrified,“Charged/Discharged”
indicator is in the position of “ charged” , the under-voltage release has to be eletrified, thewindow of ready-for-switching-on indicates“OK”, and the circuit breaker is switched on.
④ Press“Switching-on” button on the panel of the circuit breaker (switching on by hand)or the panel of switchgear cabinet (switching on by motor), the circuit breaker should be switched on.
10.2 TRIAL OPERATION
10.0 TRIAL OPERATION
11.0 MAINTENANCE, EXAMINATION AND REPAIR
Caution:
11.1 MAINTENANCE
Before any maintenance and inspection, the following procedures should be carried out:① Switch off the main circuit and the secondary circuit of the circuit breaker② Switch off the breaker and check the spring of the operating mechanism is discharged③ Pull the main body out of the draw-out socket for the draw-out circuit breaker
● Check whether the ambient environment can meet the general requirements● Check whether all rubbing and movable parts are lubricated periodically● Check whether the screw bolt for fixing the breaker with busbar is fixed firmly and whether
the contact is fine● Check the state of dust piling up on the main body and insulation parts of the draw-out
socket, and cleaning on schedule● Check whether the wiring terminals of secondary circuit are connected reliably● Check whether the intelligent controller displays correctly● Check whether protection features of the intelligent controller are set correctly● Check whether ON/OFF indication is correct and reliable
·58·
When the right maintenance is carried out, the circuit breaker can have the following operatingperformances in the table:
Frame current
1600
4000
6300
Rated Current(A)
630
800
1000
1250
1600
2500
2500
2900
3200
3600
4000
Mechanical durability* (times)
Withoutmaintenance
15000
10000
10000
10000
10000
10000
30000
30000
30000
30000
30000
30000
30000
20000
20000
20000
20000
20000
10000
10000
10000
AC440V
6500
6500
6500
6500
6500
6500
6500
3000
3000
3000
3000
3000
3000
3000
1500
1500
1500
1500
1500
AC690V
1000
1000
1000
1000
1000
1000
1000
1000
·59·
2000
2500
630
800
1000
1250
1250
1600
1600
2000
2000
15000 30000
30000
30000
30000
30000
30000
30000
30000
30000
30000
6500
6500
6500
6500
6500
6500
5000
5000
5000
5000
3000
3000
3000
3000
3000
3000
2500
2500
2500
2500
200
400
4000
5000
6300
5000
5000
5000
800
800
800
11.0 MAINTENANCE, EXAMINATION AND REPAIR
Withmaintenance
Electrical durability* (times)
11.2 EXAMINATION AND REPAIR
● Check whether all parts of the circuit breaker, such as the insulation parts of the framework,footing, are integral and clean;
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
15000
*Note: For IEC60947-2,the term" durability"expresses the expectancy of number of operating cycles which can beperformed by the equipment before repair or replacement of parts.The consequent test is not intended to beacceptance test for application by the user.
·60·
11.0 MAINTENANCE, EXAMINATION AND REPAIR
△
● Check whether the base of the breaker is fixed firmly. Should be no vibration in operation;● Manual operating mechanism for the switching on/off of breaker should be moved flexibly
without being stuck. The switching of auxiliary contact of secondary circuit should operate reliably;● Pull the slideway out or in by turning the rocker manually. The position of “ test” ,
“separated” and“connected” should be clear and interlocking should be operated reliably● When the secondary circuit is electrified, shunt, closing electro-magnet, under-voltage
release should operate in compliance with stipulations in technical manual of the breaker, power-driven operating mechanism should operate normally;
● The contact system of the arc-chute chamber including contact tips should be complete,silver coating layer should be in good condition, the arc-chute chamber should be cleaned up inside;(Note: Don’t operate the mechanism when the arc-chute chamber is opened)
● The connection between the circuit breaker and busbar should be reliable and screw boltshould be fastened;
● Check whether the surface of connector between the main body and the draw-out socketshould be clean and neat to ensure the reliable connection;
● Check the insulated resistance of the breaker with megohm meter of 1000VDC at theambient temperature of 20℃±5℃ , and the resistance should not be less than 20MΩ under therelative humidity of 50~70%;
● Check the setting values of protection features of the intelligent controller;If the controller is electrified with DC 24V, check as follows:
Connect with the exclusive tester for Type L25 Controller, press the button “ select” tochoose the setting values to check. If the setting values want to be adjusted, please turn the knob.
○ For Type M25, M26 and H26 Intelligent ControllerPress the button“Set” and the corresponding setting values will display on LED screen. To
modify the setting values, press the button“△”/ ”, then press the button“mem” to savethe modifications.
Before the breaker is in operation again, check the setting parameters of the controller. At theposition of“test”, the secondary circuit is electrified or simulate tripping test with DC24V, makesure that all simulated operations are correct before its regular operation. Check as follows:
○Type L25 Controller1: Turn the knob“test” to choose the suitable test current (NхIr );2: Wait two seconds after step 1, press the button “trip” , and then the controller will be
tested and the breaker will be switched off according to the protective curve.○Type M25, M26 and H26 Controller1: Press the button“set” to choose the phase current to test;2: Press the button“△”/ ” to choose the suitable test current;
○ For Type L25 Intelligent Controller
“
○ For Type P25 and P26 controller
Press F3 ( protection setting ) to see the setting values of protection characteristics press
“enter”, press“ ”/“ ”to adjust the values and then press“enter”.
“
1
△
·61·
11.0 MAINTENANCE, EXAMINATION AND REPAIR
3: Press the button “trip” to do tripping test or press the button “non-trip” to do non-tripping test;
4: When the test light is on, the controller is being tested. In terms of the test current valuewithin the operating range of LSI protection, the circuit breaker will be switched off (“trip” ) or(“non-trip”) only indicates on the panel according to the protective curve.
Caution: before replacing accessories, do as follows:① Cut off all electrical sources including the power supply of the main circuit and the
secondary circuits.② The circuit breaker is switched off and the charging mechanism is discharged.③ Remove the front cover of the circuit breakerThe cover of the breaker should be installed after replacement of the accessories,the breaker
can only be operated ofter check.
11.3.1 Replacement of shunt release (f), closing electromagnet (x) and under-voltage release (q)
① Remove the cable connector connecting with shunt release, closing electromagnet andunder-voltage release from the wiring terminals of the secondary circuit
② Remove the connector connecting with closing electromagnet, and remove the cover of thecontrol panel of under-voltage release and then the panel.
③ Loosen the mounting screw on the plank of shunt release, closing electromagnet and under-voltage release, and then remove the plank.
④ Remove the shunt release, closing electromagnet and under-voltage release
① Put back the shunt release, closing electromagnet and under-voltage release right onto theappointed place.
② Place the plank and tighten the mounting screw.③ Link up the closing electromagnet and ready-for-switching-on contact with the connector
put the control panel of the under-voltage inside its shell and cover it.④ Connect the lead wires of shunt release, closing electromagnet and under-voltage release
with the corresponding wiring terminals of the secondary circuit, under which the lines and theterminals have the same No.
○ P25、P26 Controller
1. Press F4→ test parameters, choose“I”、“I ”or“I ”;
2. Set simulation current in the“Current value”;
3. Choose“non-trip”or“trip” in the“Type” to test
4. Press“ESC” and“Yes”to test.
1 N G
11.3 REPLACEMENT OF ACCESSORIES
1. Remove
2. Installation
·62·
12.0 COMMON FAULT AND SOLUTION
Below list the common fault of the circuit breaker in its installing, checking and operating, and
then list the possible reasons and solutions:
1
No. Technical problems
Trip (the light of fault
indication is on)
Possible reasons
● Over-load trip(indication light forlong-time delay is on)
● Short-circuit trip(indication light forshort-time delay orinstantaneous is on)
● Earthing fault trip(indication light for
earthing fault is on)
● Under-voltage
release trip
● Operation of
mechanical interlock
1. Check the breaking current value andoperating time on the intelligent controller;2. Analyze the operation of load and electric grid;3. In case of overload, find out and eliminate thefault at once;4. If the actual operating current doesn't matchwith long-time delayed operating current, pleasemodify the setting value of long-time delayedoperating current in terms of the actual operatingcurrent to make the suitable protection;5. Press the reset button and switch the breakeron again.
1. Check the breaking current value andoperating time on the intelligent controller;2. In case of short-circuit, find out and eliminatethe fault at once;3. Check the setting value of the intelligentcontroller;4. Check whether the breaker is in good conditionand can be switched on;5. Press the reset button and switch the breakeron again.
1. Check the breaking current value andoperating time on the intelligent controller;2. In case of earthing fault, find out and eliminatethe fault at once;3. If there is no earthing fault, check whether the
setting vaule is reasonable and whether it canmatch with the actual current of protective phase;if it can't, modify the setting value of earthing
fault;4. Press the reset button and switch the breakeron again.
1.Check whether the voltage of power supply islower than 70% Us;
2.Check whether the under-voltage release andcontrol unit operate normally.
Check the operation of two pieces of breakersinstalled with mechanical interlock
Inspection and solution
·63·
2
3
Trip after being
switched on
No. Technical problems Possible reasons
● Under-voltagerelease unclosed
Unable to be
switched on
● Reset buttondoesn't work
● Draw-out breakerisn't in the rightplace
● The secondarycircuit of draw-outbreaker isn't wellconnected
● Trip at onceDelayed trip●
Inspection and solution
1. Check whether the under-voltage release iselectrified;2. Check whether the voltage of power supply islower than 85% Us;3. Check whether the under-voltage release andcontrol unit operate normally.
Press the reset button and switch the breaker onagain
Turn the draw-out socket to the right place(locked in the position of “ connected” or“test”)
Check the contact of the secondary circuit andeliminate errors
● No chargingoperation in advance
● The breaker is locked
because of the operation
of mechanical interlock
● Error for the closingelectromagnet
1. Check whether power supply for motor controlis on and not less than 85% Us;2. Check whether motor-driven chargingmechanism operates normally
Check whether the interlock operation of twopieces of breakers is in good condition
1. Check whether the power supply for the closingelectro-magnet is equal to 85% Us at least;2. Check whether there is something wrongwith the closing electromagnet, replace it.
1. In case of short-circuit current while switchingthe breaker on, find out the reason and eliminateit;2. Check the over-load current in the circuit andeliminate it;3. Check whether the operating mechanism of thebreaker is in good condition;4. Check whether the setting value of theintelligent controller is reasonable, modify it ifnecessary;5. Press the reset button and switch the breakeron again.
12.0 COMMON FAULT AND SOLUTION
·64·
4
Unable to be switched
on
5
Unable to be charged
6
7
8
12.0 COMMON FAULT AND SOLUTION
No. Technical problems Possible reasons Inspection and solution
The main body can'tbe pulled out in theposition of“separated” for thedraw-out breaker
The draw-out breakercan't be pushed intothe position of
connected“ ”
The screen on theintelligent controller
can't display
●
“ ”
The breaker can't beoperated be remote controll
Unable to switch off thebreaker with the
switching-off button
●
● Unable to chargemanually● Unable to charge bymotor
● The lock catch is notpushed down;●
●
The rocker is not pulledout;
The breaker is not at theposition of completeseparation
● The turning mechanismis stuck or the gear of themechanism is damaged dueto the falling objects
● The intelligent controlleris not electrified;
●
●
●
Input voltage of auxiliarypower supply is abnormal;
Secondary output voltage
of the socket transformer isabnormal;
The connection between
the secondary outputterminal of the sockettransformer and thecontroller is not reliable.
1. Check whether the connection of shunt releasecircuit is reliable. In case of errors for the release,replace it;2. Check whether the operating mechanism is outof mechanical failure.
1. Check whether the control voltage for thepower supply of motor-driven chargingmechanism should be not less than 85% Us andwhether the circuit is in good condition;2. Check whether the motor is in good condition;3. Errors for the charging mechanism.
Push down the lock catchPull out the rockerSeparate the main body from the breakercompletely
Check whether there are objects falling into themechanism and check the conditions of rack andgear
1. Check whether the intelligent controller is wellelectrified;
2. Cut off power supply for the intelligentcontroller, then to be electrified. Should the errorsstill appear, replace the intelligent controller.
·65·
9
10
Communication
error for Type H26、
P25、P26 Intelligent
controller
The screen on the
intelligent
controller displays
“ERR9”
● Extra high temperaturearound the controller
To reduce the ambient temperature
13.0 ACCESSORIES
13.1 NECESSARY ACCESSORIES
○ Shunt Release
Rated Control supply voltage Us(V) AC400 AC230 DC220
Operational Voltage(V) (0.7~1.1)Us
Instantaneous Current(A) 0.7 1.3 1.3
Breaking Time(ms) No more than 30
▲ Switch the breaker off by remote control
▲ Features
For BT2 with frame current of 2000A and above
12.0 COMMON FAULT AND SOLUTION
No. Technical problems Possible reasons Inspection and solution
● Communication cabledoesn't connect well withwiring terminals● Terminals A and B areinversely wired● Communication distanceand wiring ways can't meetthe requirements● Errors for the setting ofcommunication address
1. Check whether the communicationcables connect well with wiringterminals or there is wrong connection;2. Check whether terminals A and B ofthe communication cable are inverselywired. If so, make the correction;3. Check whether communicationdistance and wiring ways can meet therequirements;4. Check whether the setting ofcommunication address is correct andwithout conflict
For BT2-1600 Circuit Breaker
DC110
2.4
Rated Control supply voltage Us(V)
Rated Control supply voltage Us(V)
AC400 AC230 DC110
(0.85~1.1)Us
0.7 1.3 2.4
Switching-on Time(ms) No more than 70
After the circuit breaker is charged, the closing electromagnet will make the energy-chargingspring discharge instantly, and then switch the breaker on quickly.
Features
▲
▲
○ Closing electromagnet
·66·
AC400 AC230 DC220
(0.85~1.1)Us
Power Consumption 192VA 192W
Charging Time(s) No more than 5
▲ The circuit breaker has the functions of motor-driven energy-charging and automatic energy-discharging.
▲ Energy charging can also be done manually.▲ Features
○ Motor-driven Operating Mechanism
13.0 ACCESSORIES
For BT2 with frame current of 2000A and above
For BT2 with frame current of 2000A and above
For BT2-1600 Circuit Breaker
For BT2-1600 Circuit Breaker
Operational Voltage(V)
Operational Voltage(V)
Instantaneous Current(A)
DC220
1.3
DC110
○ Auxiliary Switch
Rated Current
Rated operational Voltage(V) Conventional thermal current Ith(A) Rated capacity
AC230
6300VA
400
DC 220 60W
Note: For the standard type of auxiliary switch, there are four pairs of changeover contacts; for the special type,there are four pieces of normally-opened contacts (NO) and four pieces of normally-closed contacts (NC),or 6 pieces of NO and 2 pieces of NC, or 2 pieces of NO and 6 pieces of NC.
·67·
○ Safety padlock mechanism at the position of“separated”
13.0 ACCESSORIES
For BT2 with frame current of 2000A and aboveFor BT2-1600 Circuit Breaker
▲ When the draw-out circuit breaker is at the position of “separated” , the locking stickcan be locked with padlock after being pulled out so that the rocker of the circuit breaker can not beturned to the position of“test” or“connected”.
▲ Padlock should be provided by users themselves.
Safety padlock mechanism at the position of“separated”
13.2 OPTIONAL ACCESSORIES
○ DC Power Module
·68·
○
▲
Power Module
When the power voltage of the intelligent controller is DC24V, AC230V or AC400V, it can be
transformed into DC24V by the power module to provide power supply for the intelligent controller.
Caution: Voltage input to secondary terminals 1 and 2 of BT2-1600 must be
DC24V.
▲ The module can be mounted to 35mm DIN rail inside the switchgear cabinet.
13.0 ACCESSORIES
When power supply of the secondary circuit is DC220V, it should be transformed into DC24Vby this module to provide power supply for the intelligent controller.
○ Under-voltage release
▲ The under-voltage release consists of release coil and control unit;▲ The under-voltage release operates in two ways: operate instantaneously and operate in
time delay;▲ There are four specifications of time delay for the under-voltage time delay release: 0.5s, 1s,
2s and 3s. Users should consult with the manufacturer in the light of their order about special time-delay specifications as from 3s and above up to 9s. The time delay accurary is±10%;
▲ The delay module should be additionally equipped for the under-voltage delay release. Themodule input connects with the main circuit, and the output connects with the wiring terminals of 31and 32 in the secondary circuit;
▲ If the voltage of power supply returns to 85% Us and above in half of the delay time, thecircuit breakers will not break. The module is stuck into the standard slideway of 35mm in width.
▲ Features
(0.35~0.7)Us
(0.85~1.1)Us
≤0.35Us
12VA
AC400Rated control supply voltage Us(V) AC230
Operational Voltage(V)
Reliable Switching-on Voltage(V)
Reliable Switching-on Resistant Voltage(V)
Power Consumption
·69·
Delay Module of Under-voltage
delay release for BT2-1600
In connection with the main circuit
In connection with the terminals of31 and 32 in the secondary circuit
Un der-voltage Time-dela y ModuleAC230V
INPUT
For BT2-1600 Circuit Breaker
13.0 ACCESSORIES
BT2 with frame current of 2000A and above
Fuju Electric FA0.5s 1s 2s 3 s
OU TPUT
input
output
·70·
○Components of draw-out socket communication module▲ The components of draw-out socket communication
.module consists of the external communication module and theinternal communication parts of the circuit breaker. The draw-outsocket communication parts are installed inside of the draw-outsocket to provide the status signals of such three positions as“separated”,“test” and“connected” of the main body ofthe draw-out circuit breaker and the draw-out socket.The draw-out socket communication module, which can provide thefunction of reading the address of the circuit breaker and displaythe status indication of the main body and three positions of thedraw-out socket etc, mounted onto 35mm DIN rall inside theswitchgear cabinet. The two parts of the draw-out socketcommunication module are connected with flexible wires.
○Electrical mechanism for the indication of draw-out socket's position▲When the main body of the draw-out circuit breaker and the draw-out socket are at the
position of “separated”,“test” and “connected” respectively, three electrical mechanismsfor the indication of draw-out socket’ s location can output the electrical signals correspondingwith three positions above respectively. These mechanisms are installed inside the draw-out socket.
▲ Features
Rated operational Voltage Ue(V) 230
Conventional Thermal Current Ith(A) 10
Rated Operational current Ie(A) 1.5
13.0 ACCESSORIES
▲
’ ’
’
Communication module is optional accessories of draw-out breaker. Connect: A to RS485
A; B to RS485 B; S to RS485 SH; - to cathode of DC24V; + to anode of DC24V; A to 8, B to 10,
S to 12; for BT2-1600, T1 to 61, T2 to 62, T3 to 63, T4 to 64; for BT2-2000 or above, T1 to Y5,
T2 to Y6, T3 to Y7, T4 to Y8.
By pressing “Read Address” button after address setting, the communication module will
save the communication address and the address will be changed accordingly. If users want to keep
the former address after changing breakers, press “write Address” button. The power lamp will
light on when DC24V power supply is given to the module. The communication lamp will light on
○ Electrical module for indication of ready-for-switching-on
230
10
1.5
▲This electrical module indicates that the circuit breaker is ready for switching-on.
▲ Features
·71·
13.0 ACCESSORIES
Rated operational Voltage Ue(V)
Conventional Thermal Current Ith(A)
Rated Operational current Ie(A)
when there's data transmission. Fault lamp will light on when the detected address is not complied
with the module address or no breaker is connected with the module. After powering up for the
module or modification of communication address, check mode or baud rate by upper devices, the
module will scan the addresses for several minutes during which the communication between the
module & upper device and between breaker & upper devices will be interrupted.
○ Ready-for-switching-on signal: Ready-for-switching-on information could be got by
upper devices.
○Under-voltage signal: Informations of trip caused by under-voltage could be got by upper
devices.
○Fault-trip signal:Informations of trip caused by overload, short-circuit or ground, etc. could
be got by upper devices.
○Current mutual inductor with neutral line N connected externally▲This current mutual inductor, which is used together with circuit breakers with three poles
in the power distribution system of TN-S, installed in the neutral line N with 2m at maximum farfrom the installation point.
○Steel cable interlock between two pieces of flush circuit breakers or linking rod interlockbetween two pieces of stacked circuit breakers
·72·
13.0 ACCESSORIES
○ ( )Linking rod interlock between three pieces of stacked circuit breakers without BT2-1600
0
1QF 2QF 3QF
1QF 3QF
0
0
0
0
1
1
1
0
2QF
0
0
0
0
1QF 2QF 3QF
1QF 3QF
0
0
0
0
1
11
1
0
2QF
0
0
1QF 2QF 3QF
0 10
00
1QF 3QF
0
0
0
0
1
1
1
0
2QF
0
0
01 1
0 11
110
Pattern three: two sets of power supply plus onepiece of coupling busbar
Pattern two: two sets of common power supply plusone set of standby power supply
Pattern one: three sets of power supply can onlyswitch off one piece of circuit breaker.
180
180
Wiring Diagram Possible operation patterns
CircuitBreaker 1
CircuitBreaker 2
CircuitBreaker 3
Breaker base
Base point
2m Max.
Wiring Diagram Possible operation patterns
1QF 2QF
1QF 2QF
0
1
0
0
1 0
Circuit Breaker 1 Circuit Breaker 2
600~700
600~700
○“opened” lock mechanism
opened“ ” lock mechanism
▲“opened” lock mechanism can lockthe “OFF” button of the circuit breaker onthe pressed position. As a result, the circuitbreaker can not be switched on.
▲After this lock mechanism was chosenby users, the manufacturer would provide lockand key.
△One set of circuit breaker is outfittedwith one lock and one key.
△ Two sets of circuit breakers areoutfitted with two same locks and one key.
△ Three sets of circuit breakers areoutfitted with three same locks and two keys.
13.0 ACCESSORIES
Steel cable interlockRefer to the interlock mode of 2 breakers for steel cable interlock of 3 breakers max. Space2m.
1QF 2QF 3QF
00
1QF 3QF
0
0
0
0
1
1
1
0
2QF
0
0
01 1
0 11
110
2 supply and 1 segmentation
Circuit diagram Possible operation mode
·73·
13.0 ACCESSORIES
○ Button locking device
Preventing from operating switching-on/off button by mistake.
Pad lock should be provided by user.
○ Counter
Counting mechanical operation times accumulatively, clear at a glance.
○ Separator plate between phases
Strengthening insulation between bus-bars; optional according to users' demand.
○ Voltage conversion module
If voltage display function is selected, voltage conversion module will be provided as astandard configuration. Input terminal is connected be the main circuit while output to thesecondary input Terminal 17, 18, 19, 20 of breakers.
·74·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
● BT2-1600 Intelligent Air Circuit Breaker with three poles (Draw-out type)
70 70
25 50
38 150 60
Outside of thecabinet door
“ ” positionSeparated
Horizontal (rear connected)
A51
D72.5 1 02.5
29777.5
46
L mm( )
200A,400A,630A 10
800A,1000A,1250A,1600A
Currentspecifications
15
2-Φ6.5
2-6.5×8.5
51
72.5 102.5
29777.5
46
15
12-Φ11
70 70
L
12-Φ11
C
·75·
86
“ ” posi tionSeparated
Outside of thecabinet door
Direction A
Base point
Direction D
Base point
Direction C
Vertical ( )rear connected
·76·
● BT2-1600 Intelligent Air Circuit Breaker with four poles (Draw-out type)
57 60201
A51
D72.5 1 02.5
29777.5
46
2-Φ6.5
2-6.5×8.5
51
72.5 102.5
29777.5
46
1516-Φ11
70 7 0
L
70
70 70
25 50
7016-Φ11
C
102
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
L mm( )
200A,400A,630A 10
800A,1000A,1200A,1600A
Currentspecifications
15 Direction A
N pole
Ou tside of thecab inet door
“ ” positionSeparated
Hor izontal ( )rear connected
Base point
“ ” posi tionSeparated
Vertical ( )rear connected
Outside of thecabinet door
Direction D
Base point
Direction C
N pole
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
● BT2-1600 Intelligent Air Circuit Breaker with three poles (fixed type)
L mm( )
200A,400A,630A 10
800A,1000A,1200A,1600A
Currentspecifications
15
70
12-Φ11
70
5025
32
4-Φ6.5
10019 2197
38.5 50.6
A
10 234 10
32
4-Φ6.5
100192
1 97
38.5 50.6
C
4-Φ6.5
214
234
244
4-Φ6.5
15
Direction A
Outside of thecabinet door
Horizontal ( )rear connected
Outside of thecabinet door
70 70
L
Direction C
Base point
Breaker base
Vertical ( )rear connected
Base point
Aperture dimensions of the back plateat the time of hanging type i nstallation
·77·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
● BT2-1600 Intelligent Air Circuit Breaker with four poles (fixed type)
70 70 70
2550
16-Φ11
10 10304
4-Φ6.5
32
4-Φ6.5
100192197
38.5 50.6
A
284
304
314
Aperture dime nsions of the b ack plateat the time of hanging type installation
4-Φ6.5
32
4-Φ6.5
100192197
38.5 50.6
C
70 70
L
15
70
Direction A
Outside of thecabinet door
Horizontal ( )rear connected
Base point
Outside of thecabinet door
Direction C
Breaker base
Vertical ( )rear connected
N p ole
N pol e
Base point
L mm( )
200A,400A,630A 10
800A,1000A,1200A,1600A
Currentspecifications
15
·78·
·79·
9524-Φ11
95
30 7 0
41 265 41
A61
D
1097 175
390102
47
24-Φ11
C
97 175102
390 66
30 1 560
6030
10
95 95
10
47
● BT2-2000 Intelligent Air Circuit Breaker with three poles (Draw-out type)
L mm( ) H mm( )
2000A 20 20
630A 800A1000A,1250A
1600A
,15 15
A mm( )
30
25
2-Φ14
11×17Φ11
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Currentspecifications
Direction A
Outside of thecabinet door
Base point
“ ” positionSeparated
Horizontal ( )rear connected
“ ” positionSeparated
Vertical ( )rear connected
Outside of thecabinet doorDirection D
Base point
Direction C
L mm( ) H mm( ) A mm( )Current
specifications
·80·
95
30 70
32-Φ1195 95
41 360 41
1097 175
10239047
D
A61
32-Φ11
C
97 175102
39 0 66
30 1560
10
47
6030
10
95 9595
N极
2-Φ14
11×17Φ11
● BT2-2000 Intelligent Air Circuit Breaker with four poles (Draw-out type)
2000A 20
630A 800A1000A,1250A
1600A
,15
30
25
20
15
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Direction A
N pole
Outside of thecabinet door
Base point
“ ” positionSeparated
Horizontal ( )rear connected
Outside of thecabinet door
Base point
“ ” positionSeparated
Vertical ( )rear connected
Direction D
Direction C
·81·
1111 3 40
A
150 6 9.5
285290
61
9524-Φ11
95
30 60
150 6 9.5285 94
3015
24-Φ11
60
6030
10
95 95
BT2-2000 Intelligent Air Circuit Breaker with three poles (Fixed type)●
Lmm( )
Wmm( )
Bmm( )
2000A 20 20 13
630A 800A1000A,1250A
1600A
,15 15 3
Amm( )
269
264
C
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Currentspecifications Direction A
Outside of thecabinet door
Base point
Horizontal ( )rear connected
Base point
Outside of thecabinet door
Base point
V ertical ( )rear connected
Direction C
·82·
95 95 95 32-Φ11
30 60
435 1111
61
A
150 69.5285
290
150 69.5285 94
3015
32-Φ11
60
6030
10
95 9595
C
● BT2-2000 Intelligent Air Circuit Breaker with four poles (Fixed type)
Lmm( )
Wmm( )
Bmm( )
2000A 20 20 13
630A 800A1000A,1250A
1600A
,15 15 3
Amm( )
269
264
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Currentspecifications
Direction A
Outside of thecabinet door
Base point
Horizontal ( )rear connected
Base point
N pole
Outside of thecabinet door
Direction C
Base point
N pole
V ertical ( )rear connected
·83·
41 265 41
A6 2
D
1097 175
390102
47
97 175102
39 0
10
47
● BT2-2500 Intelligent Air Circuit Breaker with three poles (Draw-out type)
L mm( )
2000A 2500A, 20
1250A 1600A, 15
2-Φ14
11×17Φ11
95
3 0 70
24-Φ1195
62
24 -Φ11
C
95 95
L
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Currentspecifications
Direction A
Outside of thecabinet door
Base point
“ ” positionSeparated
Horiz ontal ( )rear connected
Outside of thecabinet door
Base point
“ ” positionSeparated
Vertica l ( )rear connec ted
Direction D
Direction C
·84·
41 360 41
1097 175
10239047
D
A62
2-Φ14
11×1 7Φ11
● BT2-2500 Intelligent Air Circuit Breaker with four poles (Draw-out type)
L mm( )
20
15
2000A 2500A,
1250A 1600A,
97 175102
390
10
47
62
32-Φ1 1
C
95 95
L
95
N极
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Currentspecifications
Outside of thecabinet door
“ ” posi tionSeparatedHorizontal ( )rear connected
95
30 70
32 -Φ1195 95
Direction A
N pole
Outside of thecabinet door
Base point
“ ” positionSeparated
Vertical ( )rear connected
Direction D
Direction C
Base point
1111 3 40
A
150 6 9.5
285290
61
9524-Φ11
95
30 60
● BT2-2500 Intelligent Air Circuit Breaker with three poles (Fixed type)
·85·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Lmm( )
20
15
2000A 2500A,
1250A 1600A,
Cmm( )
132
134.5
Currentspecifications
Direction A
Outside of thecabinet door
Horizontal ( )rear connected
Base point
Base point
95 95 95 32-Φ11
30 60
435 1111
61
A
150 69.5285
290
● BT2-2500 Intelligent Air Circuit Breaker with four poles (Fixed type)Direction A
N pole
Outside of thecabinet door
Horizontal ( )rear connected
Base point
Base point
Lmm( )
20
15
2000A 2500A,
1250A 1600A,
Cmm( )
132
134.5
Currentspecifications
● BT2-4000 Intelligent Air Circuit Breaker with three poles (Draw-out type)
1 30 130
50 100
24-Φ17
11 3
10
30
113
C
24-Φ17
10450 25
1097 175
1024 7 395
2 -Φ14
Φ11
11×17
109 7 175
10247 395
B
A
104
37 327 37
·86·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Outside of thecabinet door
Base point
“ ” positionSeparatedHorizontal ( )r ear connected
Outside of thecabinet door
Base point
Base point
“ ” positionSeparated
Vertical ( )rear connected
Direction B
Direction C
Direction A
● BT2-4000 Intelligent Air Circuit Breaker with four poles (Draw-out type)
130 130 130
50 100
32-Φ17
113
10
30
113 113
C
32-Φ17
10450 25
1097 175
10247 395
2-Φ14
Φ11
11×17
1097 175
10247 395
B
A
104
37 440 37
·87·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Direction A
Outside of thecabinet door
Base point
“ ” positionSeparatedHorizontal ( )rear connected
N pole
Outside of thecabinet door
“ ”positionSeparated
Vertical ( )rear connected
Direction B
Base point
Direction C
N pole
Base point
●BT2-4000 Intelligent Air Circuit Breaker with three poles (Fixed type)
● BT2-4000 Intelligent Air Circuit Breaker with four poles (Fixed type)
A
8 2
69.515 0
285
290
11 505 11
A
82
150 69.5
285
290
11 392 11
·88·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
24-Φ13113
80
11 3
40
Direction A
Outside of thecabinet door
Base point
Ho rizontal ( )rear connected
Base point
Base point
113
804 0
113 113 32-Φ13
Direction A
N pole
Outside of thecabinet door
Base point
Horizontal ( )rear connected
10
47
7782
258
39 5
6-Φ11
4 8-Φ17
10 450 25
183
693
767
113 113
10
30
12 6.5 126.5 113
● BT2-6300 Intelligent Air Circuit Breaker with three poles (Draw-out type)
10
47
7782
258
395
6-Φ11
A
104
50 100
4 8-Φ17113 113130126.5 126.5
CCurrent specifications:In=4000A、5000A
Current specifications: 、In=4000A 5000A 6300A、
·89·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Direction A
Outside of thecabinet door
“ ” positionSeparatedHorizontal ( )rear connected
Base pointBase point
Outside of thecabinet door
Base point
“ ” positionSeparated
Vertical ( )rear connected
Direction C
● BT2-6300 Intelligent Air Circuit Breaker with four poles (Draw-out type)
113 140
10
30
113 113 113 113 113
10
47
7782
258
395
8-Φ11
A
104
Current specifications:In=4000A、5000A
·90·
10
47
7782
258
395
8-Φ11
64-Φ17
10450 25
C
Current specifications: 、In=4000A、5000A 6300A
239.5
95919993
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
50 100
13 0 130123113 113113113 64-Φ17
Direction A
N pole
Outside ofthe cabinetdoor
“ ” positionSeparatedHorizontal ( )r ear connected
Base point Base point
“ ” positionSeparated
Vertical ( )rear connected
Direction C
Base point
Outside ofthe cabinetdoor
● BT2-6300 Intelligent Air Circuit Breaker with three poles (Fixed type)
● BT2-6300 Intelligent Air Circuit Breaker with four poles (Fixed type)
·91·
20550 55 50
239.5 239.5
A
134
150 69.5
285290
11 760 11
A
134
69.5150
285290
11 986 11
20550 55
226 253
50
226
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
Direction A
Outside ofthe cabinetdoor
Horizontal ( )rear connected
Base point
Base point
Direction A
N pole
Outside ofthe cabinetdoor
Horizontal ( )rear connected
Base point
Base point
● Aperture Dimensions of BT2-1600 Door Frame
·92·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
BT2-1600 Intelligent Air Circuit Breaker withthree poles (Draw-out type)
The drawing of aperture dimensions forinstalling cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 227mm
8-Φ6 286324Breaker base
8-Φ6 216
254Breaker base
10-Φ6216
254
10-Φ6 286324
BT2-1600 Intelligent Air Circuit Breaker withfour poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 262mm
Breaker baseBreaker base
BT2-1600 Intelligent Air Circuit Breakerswith three poles ( fixed type)
The drawing of aperture dimensions formounting cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 227mm
BT2-1600 Intelligent Air Circuit Breakerswith four poles (fixed type)
The drawing of aperture dimensions formounting front cover of door frame
Distance from the panel center of the CircuitBreaker to the right hinge of cabinet door should be atleast 262mm
Aperture Dimensions of BT2-2000 Door Frame●
312175 1758- 6
353407445
10014- 6258312
175 175
11- 6
100407445
10- 6
·93·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
BT2-2000 Intelligent Air Circuit Breaker withthree poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 256mm
BT2-2000 Intelligent Air Circuit Breaker withfour poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 303.5mm
Breaker baseBreaker base
BT2-2000 Intelligent Air Circuit Breaker withthree poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 256mm
BT2-2000 Intelligent Air Circuit Breaker withfour poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 303.5mm
Breaker baseBreaker base
● Aperture Dimensions of BT2-2500 Door Frame
312175 1758- 6
353407445
10014- 6258312
175 175
11- 6
100407445
10- 6
·94·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
BT2-2500 Intelligent Air Circuit Breaker withthree poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should beat least 256mm
BT2-2500 Intelligent Air Circuit Breaker withfour poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 303.5mm
Breaker baseBreaker base
BT2-2500 Intelligent Air Circuit Breaker withthree poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 256mm
BT2-2500 Intelligent Air Circuit Breaker withfour poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 303.5mm
Breaker baseBreaker base
● Aperture Dimensions of BT2-4000 Door Frame
441100
479
10- 6
425441479
10014- 6
312328366
11- 6
328366
8- 6
·95·
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
BT2-4000 Intelligent Air Circuit Breaker withthree poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 264mm
BT2-4000 Intelligent Air Circuit Breaker withfour poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 320.5mm
BT2-4000 Intelligent Air Circuit Breaker withthree poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 264mm
BT2-4000 Intelligent Air Circuit Breaker withfour poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuitbreaker to the right hinge of cabinet door should be atleast 320.5mm
Breaker baseBreaker base
Breaker baseBreaker base
328366
8- 6
● Aperture Dimensions of 2- 00 Door FrameBT 63
441100
479
10- 6
·96·
312328366
11- 6425441479
10014- 6
14.0 OUTLINE DIMENSIONS AND INSTALLATION DIMENSIONS
BT2-6300 Intelligent Air Circuit Breaker withthree poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should beat least 264mm
BT2-6300 Intelligent Air Circuit Breaker withfour poles (Draw-out type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should be atleast 320.5mm
Breaker baseBreaker base
BT2-6300 Intelligent Air Circuit Breaker withthree poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should beat least 264mm
BT2-6300 Intelligent Air Circuit Breaker withfour poles (Fixed type)
The drawing of aperture dimensions forinstalling front cover of door frame
Distance from the panel center of the circuit
breaker to the right hinge of cabinet door should beat least 320.5mm
Breaker baseBreaker base
103-0011
Mitsui Sumitomo Bank Ningyo-cho Bldg., 5-7,
Nihonbashi Odemma-cho,Chuo-ku,Tokyo 103-0011,Japan
TEL: 81-3-5847-8000.Ext.( )
URL: http://www.fujielectric.co.jp/fcs/
Fuji Electric FA Components & Systems Co.,Ltd.
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