compact ns100 630 user manual
TRANSCRIPT
Low voltage switchgear Compact Merlin GerinExploitation guide
trip
pe
d
re
se
t
O F OFsh pu to trip
ex
LIN S ER t N M pacm co
RIN GE1
4
Io
250NP93083
1
2 Nm
MERLIN GERINcompact
NS250 NUi 750V. Uimp 8kV. Icu Ue (kA) (V) 85 220/240 36 380/415 35 440 30 500 8 660/690 50 250 cat A Ics=100% Icu
OFF
IEC947-2 UNE NEMA UTE VDE BS CEIpush to trip
M160/250A90 %Ir 1055 6 8 1.5 xIr 10 Ir Im
In=250A.85 .8 .7 .63
Ir.9 .95 .98 1 xIn 3 2 4
Imalarm
STR 22 SE
TES
T
STR
22 S
E/G
E
5
ONST R.9 Io .8
tripp364/h pus to trip
ed A
22Ir
SE.93
2.95.98 1Io
0A 16ala r %I rm 905 105 4 3
Im
6
1,5
7 8 10
tes
t
.9 1
.88 .85 .8 xIo
ST
R.9
22Ir
SE.93 .95 .98
2
xIr
.88 .9 1 1 .85 .8 xIo
In
=1
60
A.7
.8
1
.7 .63 .5 xInIm
.63
.5 xIn
Ir
4 3 E 3 6 R (T 2 IN ) /36 7 0 1 /2
OFFIo .9
h pus to trip
ala
4 3 2
tes
9
11
8 10
t
2
5
8
te bs at t
64/
0A 16r %I rm 905 10
Im
6
7
4G R L INit
M
s
(S
Im
c
e
.88 1 1 .85 .8 xIo
s
3
co co nn S nn TR ec ec tio 22 tin ... g n 58 to
te
.98
S
le
s
t
.9
te
1
.95
E
.93
Ih
ST
R
Ir
co co nn S nn T1 ec ec 08 tio tin ... g n 41 to 8
22
SE
xIr
In
=1
60
A.7
.8
.63
.5 xIn
cat
no 2
928
3
k
)
T
t
Ir
Im
In ex:
220/240 380/415 440 500/525 660/690
100 70 65 40 35
OFF
cat B Icw 8kA / 0,25s. Ics = 100% Icu IEC 947-2
3
cat B Icw 6kA / 0,25s Ics = 100% Icu IEC 947-2UTE VDE BS UNE NEMA
CEI
m 8m in .31push to trip
UTE VDE BS UNE NEMA
CEI
In = 400A
8
A 144 .9 = 136.8A In x = Io = o x .95 820.8A I Ir = Ir x 6 = MERLIN GERIN Im =compact
160
A
433
62
t
4
MERLIN GERINcompact
M5 6x 2 in 6x.Uimp 8kV. Icu (kA) 100 70 65 40 35
NS400 HUi 750V. Ue (V) 220/240 380/415 440 500/525 660/690
C 1001 H
Ui 750V. Uimp 8kV. Icu Ue (kA) (V)
PUSH TO TRIP60 70 80 90 105 %Ir I Ih
40075
STR 55UEtest t
fault
Ir
Im
Io
OFFtr
STR 53 UE
60
Io.63 .8 .88 .85 .5 1
Ir.9
Im.93 .95 .98 4 3 2 1.5
TES90
105 %Ir
T8 10
STRR
22 Stest
E/G
E
fault
I
5 6 8 3 2
4
6
P >Ir Ic.9 .88 .85 .8 1 .93 .95 .98
.8
1 240
10
1.5
12
x In
x Io
x Ir
x In.2 .1
tr
xIn tm th
120 60
tm(s)
.3
.3
>Im
.2 .1
i
T
tr
ON I
testtm Ir Im I
30 15 240
0
(s) at 1.5 Ir
on
0 2 I t off
TFR
trip
pe
d
1re se t
O F OFsh pu to trip
OFFIo
64/h pus to trip
1
a
ST
R.9
22Ir
SE.93 .95 .98
.88 .9 1 1 .85 .8 xIo
RIN GE LIN S ER t N M pacm co
4
In
=1
60
A.7
.8
.63
.5 xIn
Ir
Im
2
1
Nm
ex:
In 1
60A
Merlin Gerin Square D Telemecanique
discovering your circuit breaker
the toggle operated circuit breaker ..................................... 4 the motor mechanisms .................................................................... 5 the circuit breaker with rotary handle ....................................... 7 electrical auxiliaries .......................................................................... 8
Merlin Gerin
3
the toggle operated circuit breaker
rating plate MERLIN GERINE32507
posative contact indicationrange model (rating and breaking capacity) standardised characteristics: v Ui = rated insulation voltage v Uimp = impulse withstand voltage v Ue = rated operational voltage v Icu = ultimate breaking capacity v Ics = service breaking capacity colour indicating the type of device: v yellow = E v silver = N v pink = H v blue = L v green = switch symbol indicating suitability for isolation as defined by IEC 947.2 main standards with which device conforms
compact NS160 HUi 750V. Uimp 8kV.Ue (V) 220/240 380/415 440 500/525 660/690 250 Icu (kA) 100 70 65 50 10 85
Compact NS circuit breakers are suitable for isolation as defined by IEC 947-1 et 947-2. When the toggle is in the "OFF" position, the main contacts are ALWAYS open. It is therefore possible to carry out maintenance on the downstream circuits. When doing so, it is advised to lock the circuit breaker in the OFF position and to comply with applicable servicing regulations for low voltage circuits.
Ics = 100% Icu cat A IEC 947.2UTE VDE BS CEI UNE NEMA
circuit breaker with toggleE32505
upstream connections fixing holeE32506
Resetting following a trip When the circuit breaker is in the "tripped" position it must first be reset by moving the toggle to the OFF position before reclosing is possible.
rating plate (see above)MERLIN GERIN compact NS160 HUi 750V. Uimp 8kV.Ue (V) 220/240 380/415 440 500/525 660/690 250 Icu (kA) 100 70 65 50 10 85
I
indication of closed (I/ON) position
ON "I" closing tripped
toggle (shown in tripped position)push to trip
Ics = 100% Icu cat A IEC 947.2UTE VDE BS CEI UNE NEMA
O
indication of open (O/OFF) position circuit identification
OFF "O" reset
push to trip
40/100alarm %Ir 90 105
In=100A.8 .7 .63 .5Ir Im
STR 22 SEIo.9 1 .88 .85 .8 1
Ir.9 .93 .95 .98
STR 22 SE Im5 4 3 2 10 6 7 8
trip unit rating "push to trip" button+
-
trip unit (see page 11)
x In
x Io
x Ir
test
fixing hole downstream connections
4
Merlin Gerin
the motor mechanisms
NS100 to 630 motor mechanismsE32508
upstream connection
lock for access to electrical auxiliaries circuit identificationMERLIN GERINcompact
NS400 HUi 750V. Uimp 8kV. Ue Icu (V) (kA) 220/240 380/415 440 500/525 600/690 100 70 65 40 35
2
"off" position keylock (option available on NS400/630 only) spring-charging lever (stored-energy mechanism) rating plate (see page 4) main contacts position indicator (1)E32509
The motor mechanism module can be used to open and close the circuit breaker and charge the operating mechanism spring via electrical signals. Its position and small dimensions leave trip unit settings visible and accessible. It can be tipped forward for access to connections ans auxiliaries (voltage releases, indication switches).
(1) main contacts position indicator
I O
ON OFF
closed open/isolated
cat B Icw 6kA / 0,25s. Ics = 100% Icu IEC 947-2UTE VDE BS UNE NEMA CEI
I ON
charged
"off" position locking with a padlock (see page 40) mechanism "charged/ discharged" indicator (2)E32510
Isolation is guaranteed when the indicator signals OFF. (2) mechanism status indicatorcharged discharged spring charged spring discharged
In = 400A
manu
auto
Opush OFF
Ipush ON
1
operations counter (option available on NS400/630 only)
push button to close contactsSTR 53 UEIo.63 .8 .88 .85 .8x Io
60
75
90
> 105 %Ir
T.5
test
fault
.9
Ir
.93 .95 .98 1 240(s)
4 3
Im
5 6 3
4
I
6 8 .4 .3
Ih
.6 .7 .8
P > Ir > Im
push button to open contacts manual/automatic operation selector (3)
.5x In
1
2 8 1.5 x Ir 10
2 10 1.5 x In 12
.2 x In 1
tr
+
-
tr 12060
tm .32
.3 2
th (s) .4.3
.4 .3> Ih
(3) manual/automatic operation selector : c in manual mode, electrical control signals are inhibited, c in automatic mode, only electrical control signals are executed.
operation cycle in manual modeE32511
Ipush ON
Opush OFF
or
fault
O
OFF
charged
I
ON
discharged
O
OFF
discharged
(locking in position is possible)
manual spring charging
(locking in position is possible)
operating cycle in automatic modeautomatic spring charging ON OFF
fault
O
OFF
charged
I
ON
discharged
Omanual spring charging
OFF
discharged
manual spring chargingmanu/auto determine cause of fault manu/automan u/au to
Opush OFF
Ipush ON
(9 times)
OMerlin Gerin
OFF
discharged
O
OFF
charged
5
the motor mechanisms
C801 to C1251 type T motor mechanismE33379
upstream connections keylock to block handle
The motor mechanism module can be used to open and close the circuit breaker via electrical signals. Its position and small dimensions leave trip unit settings visible and accessible. It can be tipped forward for access to connections ans auxiliaries (voltage releases, indication switches). Manual operation is possible by opening the transparent front cover : c breaks the electrical circuit. c gives access to the operating handle (open - close). c allows the device to be locked by up to 3 padlocks.
Ifront cover giving access to the manual controlMERLIN GERINcompact
C801Ui 750V. Uimp 8kV. Ue Icu (V) (kA) 220/240 380/415 440 500/525 660/690 cat B Icw 6kA / 0,25s. Ics = 100% Icu IEC 947-2UTE VDE BS UNE NEMA CEI
rating plate
100 70 65 50 20
I
lock position open
In = 400A
OO
manual operating handle
STR 55UEfault
60 70 80 90
105 % Ir
Io
.63
.8
tIc1
Ir
test
Ir
.9
Im.95 3
4
5 6 4
I
5
6 8A B
Ih.3
.4
trip unit (see page 11)
.5
1
tr
xInIh th Im tm IC 801 NH L C 1001 NH L 10 8 15 8
.85 .8
xIo
1 240
2 1.5 .3 .2 .1
xIr
8 3 10 2 .3 .2 .1 .85 .8 0 .9
.5 .2 .4
xIn
xIn
.6
+
S
120 60 30 15
.4 .3 .2
.95 .3 .2
480on
0
TFR
A B
C 1251NH 10 12
i
T
+tr
I2t
off
xIr
1
.1on
I2t
.1off
at 1.5Ir
Ic1
tm
th
downstream connections
Position "ON" closedE33380 E33381
Position "OFF" openE33382
Locking by 3 padlocks
I
IO60 70 80 90fault
I
OO105 % Ir
O
6
Merlin Gerin
the circuit breaker with rotary handle
circuit breaker with rotary handleE32512
upstream connection
ON
keylock to block handle (option) on-position indicator handle locking using a padlock circuit identification
I
The direct and extended rotary handles do not inhibit: c visibility of and access to trip unit settings, c positive contact indication (suitability for isolation), c indication of the three positions: O, I, "tripped", c access to the trip test buttton marked "push to trip". Compact NS100 to 630 optional handles: the following accessories are available : c MCC version (motor control and command), c machine tool version.E32513
trippedMERLIN GERINcompact
tripped-position indicator rotary handle
resetpush to trip
OOFFalarm
off-position indicator trip button marked "push to trip"6 7 8 2 10
In=100A.8 .7 .63 .5Ir Im
STR 22 SEIo.9 1 .88 .85 .8 1
Ir.9 .93 .95 .98
%Ir 90 105
Im5 4 3
+
-
trip unit (see page 11)ON
I/ON (closed) trippedI
x In
x Io
x Ir
test
rating plate (see page 4)
downstream connection
closing reset
tripped
reset
OOFF
O/OFF (open isolated)
circuit breaker equipped with an extended rotary handle
The extended rotary handle comprises : c a case mounted on the Compact NS in place of the front cover (1), c an extension shaft (2), c an assembly fixed to the door (handle and front) (3).
E32514
1 2ON I
Options : Telescopic shaft for devices mounted on a withdrawable chassis. With the exception of the rating plate and the "push to trip" button, the extended rotary handle provides the same information as the direct rotary handle, and is achieved in the same manner. Access to the trip unit settings and the "push to trip" test button is possible when the door is open. Compact C801 to C1251 option : includes the same components as the door interlocking version, but is only available with a short extension shaft. CAM (early make/break contacts) c a single early break changeover contact, used to operate pre-tripping mechanisms. c a double early make contact. Both these contacts are mounted in the 'handle front box' for both the direct and extended versions.
3
O OFF
ON I
O OFF
Merlin Gerin
7
electrical auxiliaires
E32515
E32516
E32517
OF1 SD
SDE OF2
SD OF(2) OF1 OF2 OF3 SD SDE
MN/MXMN/MX (1)
E32518
Compact NS80SDV
SDMN/MX MITOP
OF2
MN/MX OF1 OF3
SDV
SDE
Compact NS100/160/250 + Vigi (optional)(1) slot for: c a MITOP release if the circuit breaker is fitted with an electronic trip unit; c an adapter required if the circuit breaker is fitted with a thermal-magnetic trip unit and an SDE contact. (2) slot for auxiliary connections for STR53UE trip unit options.
Compact NS400/630 + Vigi (optional) Compact C801/1001/1251
All auxiliaries are located behind the circuit breaker front plate, the motor mechanism module or the rotary handle, in a compartment insulated from the power circuits. Function and terminal markings are embossed on the circuit breaker frame for each slot. Auxiliary contacts and releases are physically identical for all ratings.
A single type of auxiliary contact is used for all indication functions (OF, SD, SDE, SDV). The contact function is determined by the slot it occupies in the circuit breaker. Auxiliary contacts snap easily into position. Connections are made via integrated screw terminals.
8
Merlin Gerin
electrical auxiliaries
auxiliaries switchesE18608
Auxiliary contacts remotely indicate circuit breaker positions. Contact OF NC and NO changeover contact. This auxiliary contact indicates the position of the circuit breaker contacts (open or closed).
c earth fault, c an MX or MN release, c pressing of the "Push to trip" button, c racking in or out, c manual opening on the front of the motor mechanism module. Contact SDV insulation fault indication. This auxiliary contact indicates that the circuit breaker has tripped due to an earth fault. Contact CAM early make/break contact which mounts in the rotary handle. Option COM (communication). For transmission of data using the Dialpact protocol.
For NS100 to NS630E23839
Contact SDE fault trip indication. This auxiliary contact indicates that the circuit breaker has tripped due to an electrical fault: c overload, c short-circuit, c insulation fault detected by the Vigi module. Switch SD trip indication. This auxiliary contact indicates that the circuit breaker has tripped due to one of the following: c overload, c short-circuit,
For C801 to C1251
voltage releasesE18609
Voltage releases are used to trip the circuit breaker voluntarily by means of an electric signal (e.g. emergency off button). Release MN This undervoltage release trips the Compact NS when the voltage in its control circuit drops below 70% of the rated voltage. The circuit breaker can be reclosed as soon as the voltage has reached 85% of the rated value.
Release MX This shunt release trips the Compact NS as soon as the voltage across its terminals reaches 70% of the rated voltage.
Merlin Gerin
9
10
Merlin Gerin
how to setup your trip unit
trip unit settings - general commentsintroduction ............................................................................................. 12 Compact NS100-160-250 A ................................................................... 14 Compact NS400-630 A ........................................................................... 15 Compact C801-1001-1251 A .................................................................. 16
trip unit settings - detailsthermal - magnetic : TM16D to TM250D ................................................................................. 17 electronic : STR22SE - STR22GE ............................................................................ 18 STR23SE ................................................................................................ 20 STR53UE ............................................................................................... 21 STR25DE and STR25DE (*) (fine adjustment) ....................................... 24 STR35SE/GE ......................................................................................... 26 STR45AE ................................................................................................ 27 STR45BE ................................................................................................ 28 STR55UE ............................................................................................... 29
increased setting range with 150 and 250 A CTs ................ 22 remote indication and electronic trip unit optionsSTR22SE, STR23SE, STR53UE ........................................................... 23 STR45AE/BE, STR55UE ........................................................................ 30
testing of electronic trip unitsSTR22SE, STR23SE, STR53UE ........................................................... 31 STR25DE, STR35DE/GE ....................................................................... 31 STR45AE/BE, STR55UE ........................................................................ 31
electronic trip unit settings for motor protectionSTR22ME ............................................................................................... 32 STR43ME ............................................................................................... 33 STR35ME ............................................................................................... 34
Merlin Gerin
11
trip unit settings - general comments
The trip unit is the component that monitors the electrical current flowing through the circuit breaker and opens the circuit breaker in the event of a fault. c thermal-magnetic and electronic trip units detect overloads and shortcircuits;
c Compact circuit breakers can also be fitted with a Vigi earth-fault protection module that trips the circuit breaker in the event of an insulation fault (risk of electrocution or fire due to earth leakage current).
All Compact trip units (NS100 to NS630) incorporate the reflex-tripping system, an exclusive Merlin Gerin feature that ensures discrimination, even for very high short-circuit currents.
overload protectionTripping time depends on the level of the fault: c the circuit breaker will trip within 2 hours for a current equal to : v 120% of Ir for electronic trip units, v 130% of Ir for thermal-magnetic trip units. c the circuit breaker must not trip for a load under 105% of Ir.
E32521
Io.63 .8 .88 .85
STR 53 UE Ir.9 .93 .95 .98 .8 1x Io
60
75.9 .88 .85 .8 1x Io
90STR 53 UE Ir.93 .95 .98
> 105 %I
Im4 3.5x In
.63
5 Io
.8
4Im4 3 2 1.5x Ir
60
I10
75
5 6 8
6
90
> 105 %Ir
I4 6
T Ih.5 .6 .7 .8 .2x In
test
fault
P > Ir > Im
61tr
3(s)
3 2 1.5
8x In
8
.4 .3 1
10 11
.5x In
1
2 1.5tm
+test
-8
tr 12060 30
240
Ir Im I
+
-
tr 12060
240
s)
m .3.2
x Ir
10
15
240
(s) at 1.5 Ir
2 1.5.2 .1on
tm .3
.3 .2 .12 I t off
0
0
x In
10 11
th(s)
.4 .3 .2on
.4 .3 .2> Ih
.1 .1 2 I t off
.3 .2
short circuit protectionThe tripping is : c time delayed as soon as the current exceeds the Im threshold. c instantaneous as soon as the current exceeds the I threshold. The ME trip units conform to IEC 947-4.1 (motor protection).
12
Merlin Gerin
terminology of the overload and short-circuit protection settingsE31303
Io x Ir
1
adjustable for all modeles
tr Ic2 Ic1
2
fixed for : TM16D to 250D STR22SE / 22GE / 22ME, STR23SE, STR25DE, STR35SE / GE / ME adjustable for : STR43ME, STR53UE, STR45AE / BE, STR55UE
6
6
Im
3
fixed for : TM16D 160 / TM16G to TM63G, STR22ME adjustable for all other models
fixed for: TM16D to 250D STR22SE / GE / ME, STR23SE, STR25DE / GE
ON OFF
tm
4
adjustable for : STR45AE / BE STR35SE / GE, STR43ME, STR53UE, STR55UE
7
Ih
5ON OFFth I
fixed for : STR22SE / GE / ME, STR23SE / GE, STR35SE / GE / ME, STR43ME adjustable for : STR53UE, STR55UE
8
Long time protection against overloads 1 Io = coarse adjustment (function of In) Ir = fine adjustment
4
tm = short circuit time delay fixed or adjustable, Earth fault protection 7 Ih = insulation fault threshold, I2t curve in position ON or OFF
2
tr = long time delay fixed or adjustable depending on the trip unit
Instantaneous protection 5 I = instantaneous threshold, fixed or adjustable depending on the trip unit
8 6Ic1 = adjustable load shedding threshold for STR45, STR53 and STR55 Ic2 = adjustable load shedding threshold for STR45 and STR55
th = earth fault time delay
Short circuit protection 3 Im = short circuit threshold, I2t curve in position ON or OFF (depending on the trip unit)Merlin Gerin
13
trip unit settings - general comments
Compact NS100-160-250A2 interchangeable families
thermal-magnetic trip unitE32522440 500/525 660/690 250 65 50 10 85
Trip unit identification TM 250 Dmini/maxi value of thermal protection trip unit identification type D : standard trip unit G : low magnetic-threshold trip unit
Ics = 100% Icu cat A IEC 947.2UTE VDE BS CEI UNE NEMA
O
push to trip
200/250A
ratingSTR 22 SE TM 250 D50/60Hz
In=160A
Ir Ir
Im Im
.85 .9 .95 .8 .7 1 .98 .63 1 .9
4 3
5
10alarm
90 5 105 %Ir
69
250A / 40Ctest
6 8 7Ir Ir Im Im
trip unit rating and reference temperature magnetic setting (or value if fixed) for short-circuit protection thermal setting for overload protection
2 8 .8 1.5 10x Ir
family TM = thermal-magnetic MA = magnetic
x In x 250A
x 250A
electronic trip unitE32523440 500/525 660/690 250 65 50 10 85
Trip unit identification STR 22 SE
Ics = 100% Icu cat A IEC 947.2UTE VDE BS CEI UNE NEMA
O
E : IEC P : UL
push to trip
trip unit identification40/100
In=160A In=100A.7
Ir
STR Im SE 221
.85 .9 Io .9 .8 .8 .95 .7 .63 .63Ir Im
3
4 Ir 5.9
.98.5 1
x In
2 8 .85 1.5.8 101 .98x Ir Io x
.88
.93 6 .95
alarm
90 %Ir alarm %Ir 105 90 105
STR 22 SE Im 50/60Hz5 6 4 7
short time setting (Im) for short circuit protection+test
type S : selective trip unit G : generator protection trip unit M : motor protection trip unit
-
test connector (see page 31) alarm (see page 23)rating group 2 : NS100/160/250
x In
3 8 Ir 2 Im Ir 10 x
test
long time setting Io x Ir (LR) for overload protection Io : base setting Ir : fine adjustment trip unit rating (calculation basis for settings)
number of settings family STR = electronic
14
Merlin Gerin
Compact NS400-630 Aelectronic trip unit STR53UEtrip unit identificationE32531
push to trip
160/400A 160/400A
indication/alarm (see page 23) short time setting for short circuit protection (Im)
STR 53 UEIo.63 .8 .9 .88 .85 .8 1x Io
60
75
90
> 105 %Ir
TIh.5 .6 .7 .8 .2x In
test
fault
Ir.93 .95 .98 4 3 2 1.5
Im5 6 8x Ir
I4 3 2 1.5 6 8 10 11 .4 .3
P > Ir > Im
instantaneous setting for short circuit protection (I) slot for the SD option "fault indication" long time setting (LR) for overload protection Io : base setting Ir : fine adjustment slot for options "earth-fault" or "load monitoring" short time time-delay setting (tm) long time time-delay setting (tr) test connector (see page 31)
.5x In
1
10
tr tm Ir Im I
+test
tr 12060 30
240
tm .3(s)
x In
1
.3 .2 .1 0
th(s)
.4 .3 .2on
.4 .3 .2> Ih
.2 .1
240(s) at 1.5 Ir on
0
2 I t off
.1 .1 2 I t off
Trip unit identification STR 53 UE
E : IEC P : UL type S : selective trip unit U : universal trip unit M : motor protection trip unit
rating group 3 : NS400/630 number of settings family STR = electronic
Merlin Gerin
15
trip unit settings - general comments
C801-1001-1251 Aexclusively electronictrip unit identification
indication/alarm (see page 30)
E32868
O
long time setting (LR) for overload protection Io : base setting Ir : fine adjustment
short time setting for short circuit protection (Im)STR 55UEfault
60 70 80 90
105 % Ir
Io
.63
.8
tIc1
Ir
test
Ir
.9
Im.95 3
4
5 6 4
I
5
6 8A B
Ih.3
.4
instantaneous setting for high short circuit protection (I) adjustment for earth fault threshold (Ih)
.5
1
tr
xInIh th Im tm IC 801 NH L C 1001 NH L A 10 8 B 15 8
.85 .8
xIo
1 240
2 1.5 .3 .2 .1
xIr
8 3 10 2 .3 .2 .1 .85 .8 0 .9
.5 .2 .4
xIn
xIn
.6
+
S
120 60 30 15
.4 .3 .2
.95 .3 .2
480on
0
TFR
C 1251NH 10 12
i
T
+tr
I2t
off
xIr
1
.1on
I2t
.1off
at 1.5Ir
Ic1
tm
th
adjustment for earth fault time delay (th) load monitoring control
adjustment for short circuit time delay (tm)
adjustment for overload time delay (tr) test socket (see page 31)
Trip unit identification STR 5 5 U
Estandard E : IEC P : UL
application I : isolator D : distribution S : selective G : generator protection M : motor protection U : universal B : selim circuit breaker 5 : C801/1001/1251 number of settings family STR = electronic
16
Merlin Gerin
trip unit settings - details thermal-magnetic TM16D to TM250D
E33456
t
1
3
1
Ir
Im
10 9
5 6
TM 250 D 250A / 40C
1
.9
.8
3Ir Im0 Ir Im
8
7I
x 250A
x 250A
E32524
Ir
Im
Thermal overload protection10 9 5 6 8 7setting 0.8 0.9 1 trip unit rating (A) 16 25 40 12.8 20 32 14.4 22.5 36 16 25 40 63 50.4 56.7 63 80 64 72 80 100 80 90 100 125 100 112.5 125 160 128 144 160 200 160 180 200 250 200 225 250
1
.9
.8
x 250 A
x 250 A
Ir = 250 A x 0.9 = 225 A
E32525
Ir
Im 109 1 .9 .8 8
Magnetic short-circuit protection5 6 7setting 5 6 7 8 9 10 trip unit rating (A) 16 25 40 63 80 100 125 160 200 1000 1200 1400 1600 1800 2000 250 1250 1500 1750 2000 2250 2500
x 250 A
x 250 A
d fixe
Im = 250 A x 8 = 2000 A
The circuit breaker trips instantaneously when the current exceeds 2000 A.
Merlin Gerin
17
trip unit settings - details electronic STR22SE and STR22GE
E32563
t
1 1 3
In=100A.8 .7 .63 .5Ir Imx In
STR 22 SEIo Ir.9 1 .88 .85 .8x Io
alarm
%Ir 90 105
3Im5 4 3 2x Ir
.9
.93 .95 .98 1
6 7 8 10
+
-
test
0
Ir
Im
I
electronic trip unit STR22SE and GE rating 40, 100, 160, 250 AE32526
.8 .7 .63 .5
Io
.9 1 .88 .85
.9
Ir
.93 .95 .98
5 4 3 2
Im
Long time overload protection7 8
6
.8
1
10
x In
x Io
x Ir
STR22SE 40 A Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1
Ir (fine adjustment) 0.8 0.85 0.88 16 17 17,5 20 21 22 22,5 24 24,5 25,5 27 28 29 30,5 31,5 32 34 35
0.9 18 22,5 25 29 32 36
0.93 185 23 26 29,5 33,5 37
0.95 19 23,5 25,5 30 34 38
0.98 19,5 24,5 27,5 31 35 39
1 20 25 28 32 36 40
STR22SE 100 A Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1
Ir (fine adjustment) 0.8 0.85 0.88 40 42,5 44 50,5 53,5 55,5 56 59,5 61,5 64 68 70,5 72 76,5 79 80 85 88
0.9 45 57 63 72 81 90
0.93 46,5 59 65 74,5 83,5 93
0.95 47,5 60 66,5 76 85,5 95
0.98 49 62 68,5 78,5 88 98
1 50 63 70 80 90 100
STR22SE 160 A Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1
Ir (fine adjustment) 0.8 0.85 0.88 64 68 70,5 81 86 89 89,5 95 98,5 102,5 109 112,2 115 122,5 127 128 136 141
0.9 72 91 101 115 129,5 144
0.93 74,5 94 104 119 134 149
0.95 76 96 106,5 121,5 137 152
0.98 78,5 99 110 125,5 141 157
1 80 101 112 128 144 160
18
Merlin Gerin
STR22SE 250 A Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1
Ir (fine adjustment) 0.8 0.85 0.88 100 106 110 126 134 138,5 140 149 154 160 170 176 180 191 198 200 212,5 220
0.9 112,5 142 157,5 180 202,5 225
0.93 116 146,5 163 186 209 232,5
0.95 119 150 166 190 214 237,5
0.98 122,5 154 171,5 196 220,5 245
1 125 157,5 175 200 225 250
Eg.
In
160 A
Io Ir
0.5 0.63 0.7 0.8 0.9 1 coarse setting 128 A 0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 128 A x 0.9 = 115 A
.8 .7 .63 .5
Io
.9 1 .88 .85
.9
Ir
.93 .95 .98
5 4 3 2
Im
Short-circuit protection7 8
6
With an electronic trip unit, the short circuit threshold is a multiple of the overload setting.
E32527
.8
1
10
Eg. InIo Ir
160 A 1
x In
x Io
x Ir
0.5 0.63 0.7 0.8 0.9
0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 128 A x 0.9 = 115 A
Im
2
3
4
5
6
7
8
10
Im = 115 A x 5 = 575 A
The device trips instantaneously when the current exceeds 575 A.
Merlin Gerin
19
trip unit settings - details electronic STR23SE
E32565
t
1
3
1
STR 23 SEIo.8 .9
alarm
90 105 %Ir
Ir1 .88 .85 .8 .9 .93 .95 .98 1x Io
Im5 4 3 2x Ir
6 7 8 10Ir Im
.7 .63 .5x In
3
+test
-
0
Ir
Im
I
The trip unit rating for the STR23SE and STR53UE is fixed by the current transformer within the circuit breaker.E32529
8 .7 .63 .5
Io
9 1 .88 .85
.9
Ir
.93 .95 .98
5 4 3 2
Im
Overload protection7 8
6
.8
1
10
x In
x Io
x Ir
Compact NS400 Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1 Compact NS630 Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1
Ir (fine adjustment) 0.8 0.85 0.88 160 170 176 202 214 222 224 238 246 256 272 282 288 306 316 320 340 352 Ir (fine adjustment) 0.8 0.85 0.88 252 268 277 318 337 349 352 374 388 403 428 443 453 481 498 504 535 554
0.9 180 227 252 300 324 360
0.93 186 234 260 298 334 372
0.95 190 239 256 304 342 380
0.98 196 247 274 314 352 392
1 200 252 280 320 360 400
0.9 284 357 396 472 510 567
0.93 293 369 410 469 527 586
0.95 299 377 418 479 538 598
0.98 309 389 432 494 555 617
1 315 397 441 504 567 630
Example of protection settings Eg.
In
400 A 0.5 0.63 0.7 0.8 0.9 1 coarse setting 320 A 0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 320 A x 0.93 = 298 A
Io Ir
E32530
8 .7 .63 .5
Io
9 1 .88 .85
.9
Ir
.93 .95 .98
5 4 3 2
Im
Short circuit protection7 8
6
The short circuit threshold is a multiple of the overload setting.400 A
Eg.Io Ir
In
.8
1
10
x In
x Io
x Ir
0.5 0.63 0.7 0.8 0.9
1
0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 320 A x 0.93 = 298 A
Im
2
3
4
5
6
7
8
10
Im = 298 A x 7 = 2086 AFor a NS400 circuit breaker with 400 A CTs, the STR23SE trip unit is calibrated at 400 A
20
Merlin Gerin
trip unit settings - details electronic STR53UE
E32567
t
8
1
2
3
4
5
7
6
1 2
Io.63 .8 .88 .85
STR 53 UE Ir.9 .93 .95 .98 .8 1x Io
60
75
90
> 105 %Ir
Im4 3 2 1.5 5 6 8x Ir
I4 3 2 1.5 6 8 10 11 .4 .3
T Ih.5 .6 .7 .8 .2x In
test
fault
P > Ir > Im
3 4 5
.5x In
1
10
tr tm Ir Im I
+test
-
tr 12060 30
240
tm .3(s)
x In
1
.3 .2 .1 0
th(s)
.4 .3 .2on
.4 .3 .2> Ih
.2 .1
15
240on
0
(s) at 1.5 Ir
2 I t off
.1 .1 2 I t off
0
Ir
Im
I
I
trip unit adjustment STR53UE
Overload protectionCompact NS400 Io (coarse setting) 0.5 0.63 0.8 1 Compact NS630 Io (coarse setting) 0.5 0.63 0.8 1 Ir (fine adjustment) 0.8 0.85 0.88 160 170 176 202 214 222 256 272 282 320 340 352 Ir (fine adjustment) 0.8 0.85 0.88 252 268 277 318 337 349 403 428 443 504 535 554 0.9 180 227 300 360 0.93 186 234 298 372 0.95 190 239 304 380 0.98 196 247 314 392 1 200 252 320 400
0.9 284 357 472 567
0.93 293 369 469 586
0.95 299 377 479 598
0.98 309 389 494 617
1 315 397 504 630
Trip unit STR53UE provides an even finer balance between safety and service continuity for installations with special characteristics (for example induction furnaces, fluorescent lighting, arc-welding systems, SCR-based regulation systems, etc.), by the use of three additional settings: Short circuit time delayE33465
c instantaneous tripping threshold (I); c overload protection delay (tr); c short circuit protection delay (tm).
overload time delayE33478
4
2
tmI2t off
0...0,3 s
0...0,3 s
tr
15...240 s
tmon I2t
Options : see page 23.E32532
Io.63 .8 .9 .88 .85 .8
Ir.93 .95 .98 1 3
Im4 5 6 8 10 3 2 1.5 4 2 1.5
I6 8 10 11
Increased short circuit protection with the adjustable instantaneous threshold, I Eg.
The tripping time is faster than that of the short circuit time delay. The threshold is a function of the circuit breaker rating.
.5
1
In1.5 2 3 4
400 A 6 8 10 11
x In
x Io
x Ir
x In
I
I = 400 A x 6 = 2400 AMerlin Gerin
21
increased setting range with 150 and 250 A CTs
trip unit adjustment STR23SE
Overload protectionNS400 (150 A) Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1 NS400 (250 A) Io (coarse setting) 0.5 0.63 0.7 0.8 0.9 1 Ir (fine adjustment) 0.8 0.85 0.88 60 63,76 66 75,6 80,32 83,16 84 89,25 92,4 96 102 105,6 108 114,75 118,8 120 127,5 132 Ir (fine adjustment) 0.8 0.85 0.88 100 106,25 110 126 133,87 138,6 140 148,75 154 160 170 176 180 191,25 198 200 212,2 220 0.9 67,5 85,05 94,5 138 121,5 135 0.93 69,75 87,88 97,65 111,5 125,55 139,5 0.95 71,25 89,77 99,75 114 128,55 142,5 0.98 73,5 92,61 102,9 117,6 132,5 147 1 75 94,5 105 120 135 150
0.9 112,5 141,75 157,5 180 202,5 225
0.93 116,25 146,57 162,75 185 209,25 232,5
0.95 118,75 149,62 166,25 190 213,75 237,5
0.98 122,5 154,35 171,5 196 220,5 245
1 125 157,6 175 200 225 250
trip unit adjustment STR53UE
Overload protectionNS400 (150 A) Io (coarse setting) 0.5 0.63 0.8 1 NS400 (250 A) Io (coarse setting) 0.5 0.63 0.8 1 Ir (fine adjustment) 0.8 0.85 0.88 60 63,76 66 75,6 80,32 83,16 96 102 105,6 120 127,5 132 Ir (fine adjustment) 0.8 0.85 0.88 100 106,25 110 126 133,87 138,6 160 170 176 200 212,2 220 0.9 67,5 85,05 138 135 0.93 69,75 87,88 111,5 139,5 0.95 71,25 89,77 114 142,5 0.98 73,5 92,61 117,6 147 1 75 94,5 120 150
0.9 112,5 141,75 180 225
0.93 116,25 146,57 185 232,5
0.95 118,75 149,62 190 237,5
0.98 122,5 154,35 196 245
1 125 157,6 200 250
22
Merlin Gerin
remote indication and electronic trip unit options STR22SE, STR23SE, STR53UE
indicationalarm LEDFor Compact NS100/160/250: STR22SE or STR23SE The LED lights and remains lit when the load exceeds 90 % of Ir. The LED blinks for an overload (u 105% Ir), warning that the circuit breaker may trip.E32533
STR 23 SE
alarm
alarm
90 105 %Ir
90 105 %Ir
STR 53 UE
60
60 75
75
> 90 90> 105 %Ir 105 %Ir
For Compact NS400/630 : STR53UE The 4 LEDs indicate the load level: c 60 / 75 / 90 % : the load is high and care should be taken to ensure that the 105% threshold is not exceeded;
c 105 % : There is an overload and the unit may trip. Shedding of non-priority loads.
E32534
options forSTR53UEE26031
test P > Ir > Im > Ih
fault
Option F, fault indication This option can be fitted to the STR53UE (Compact NS400 or NS630). Following a trip, press the fault test button for an indication of the cause:
c P : internal microprocessor fault, c > Ir : overload or circuit breaker over-temperature, c > Im : short-circuit (or instantaneous), c > Ih : earth fault protection.
E26030
R
E32693
Example of threshold setting :6In 400 A Io 0.5 0.63 0.8 1
Ic1
0,8...1 Ir
1
Ic.9 .88 .85 .8 1 .93 .95 .98
coarse setting 320 AIr 0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 320 A x 0.93 = 298 A Ic 0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ic = 298 A x 0.95 = 283 A
load-shedding control - option R This function allows remote indication of whether the load is above or below the threshold, Ic.E26029 E32691 E32692
It is generally used to disconnect nonpriority circuits in the event of an overload (load shedding).
T.5 .4 .3 .2 x In 1
Ih
.6 .7 .8
7
7
tripping threshold adjustment Ih = 0.2 to 1 x In
Ih
0,2...1 In
Ih
0,2...1 In
th (s) .4.3 .2on
.4 .3 .2
tripping time adjustment
0,1...0,4 s ON I2tI2t OFF
0,1...0,4 s
.1 .1 2 I t off
th
8
th 8
Earth fault protection - option T This function will trip the circuit breaker in the event of a fault to earth on a TNS system.
Merlin Gerin
23
trip unit settings - details electronic STR25DE
E32679
1
3t
1STR 25DEtest
60 70 80 90
105 % Ir
t
Ir
Ir
.9
I.95 3
4
5 6 8 10
.85 .8
xIo
1
2 1.5
xIr
I
+
i
30Ir I
I
E33457
.9
Ir.95 3 2
4
I
Setting STR25DE5 6 8
Compact C801N/H/L setting
In = 800 A 1 0.95 0.9 720 0.9 900 0.9 1125 0.8 640 0.8 800 0.8 1000 0.7 560 0.7 700 0.7 875 0.63 504 0.63 630 0.63 787 0.5 400 0.5 500 0.5 625 0,4 320 0,4 400 0,4 500 800 760 In = 1000 A 1 0.95 1000 950 In = 1250 A 1 1250 0.95 1187
1
.85 .8 1
1.5
10
x Io
x Ir
Ir (A) Compact C1001N/H/L setting
1
Ir (A) Compact C1251N/H/L setting Ir (A)
1
E33458
.9
Ir.95 3 2
4
I
5 6 8
Example : In = 1000 A, Ir = 800 A Im = 4000 A
1
In Ir
1000 A 0.4 0.5 0.63 0.8 0.9 0.95 1 Ir = 0,8 x 1000 = 800 A
.85 .8 1
1.5
10
x Io
x Ir3 Im 1.5 2 3 4 5 6 8 10
Im = 5 x Ir = 4000 A
24
Merlin Gerin
trip unit settings - details electronic STR25DE (*) (fine adjustment)
E32680
1
1
3t
1STR 25DE (*)Iotest
60 70 80 90
105 % Ir
.63
.8
t
Ir
Ir
.9
I.95 3
4
5 6 8 10
.5
1
xInI
.85 .8
xIo
1
2 1.5
xIr
+
i
30Ir I
(*) fine adjustment
I
E33459
Io.63 .8 .85
.9
Ir.95 3 2
4
I
Setting STR25DE (*)5 6 8
Compact C801N/H/L Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.5
1
.8
1
1.5
10
x In
x Io
x Ir
Compact C1001N/H/L 1
In = 1000 A
Compact C1251N/H/L 1
In = 1250 A
Io.63 .8 .85
.9
Ir.95 3 2
4
I
5 6 8
Example : C1001N : In = 1000 A, Ir = 720 A, Im = 3600 A,
E33460
In 1 Io
1000 A 0.5 0.63 0.8 1
.5
1
base setting 800 A
.8
1
1.5
10
x In
x Io
x Ir
2
Ir
0.8 0.85 0.875 0.9 0.925 0.95 0.975 1 Ir = 800 x 0,9 = 720 A
3
Im
1.5
2
3
4
5
6
8
10
Im = 720 x 5 = 3600 A
Merlin Gerin
25
trip unit settings - details electronic STR35SE/GE
E32681
1
1
3
4t
1
IrSTR 35SEIotIr.5 1
0,4...1In
60 70 80 90
105 % Ir
.63
.8
test
Ir
.9
Im.95 3
4
5 6 8 10 .3 .2 .1
3
120s Im tm I
xIn
.85 .8
xIo
1
2 1.5 .3 .2 .1 0on
Im
1,5...10Ir
xIr
+
4
0
I2t
off
1,5 Ir
A
iC 1251NH 12
C 801 NH L C 1001 NH L A x In 15 8
tm
0E33461
Ir
Im
I
I
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
Setting STR35SE/GE6 8
5
Compact C801N/H/L Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.5
1
.8
1
1.5
10
x In
x Io
x Ir
Compact C1001N/H/L 1
In = 1000 A
Compact C1251N/H/L 1
In = 1250 A
E33462
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
5 6 8
Example : C1001N : In = 1000 A, Ir = 720 A, Im = 3600 A,
In 1 Io
1000 A 0.5 0.63 0.8 1 coarse setting 800 A 0.8 0.85 0.875 0.9 0.925 0.95 0.975 1 Ir = 800 x 0,9 = 720 A
.5
1
.8
1
1.5
10
x In
x Io
x Ir
2
Ir
Short circuit time delayE32690
3
Im
1.5
2
3
4
5
6
8
10
4Im = 720 x 5 = 3600 A
tmI2t off
0...0,3 s
0...0,3 s
tmon I2t
C801 N/H L C1001N/H L C1251N/H
A B 26
10 8 15 8
10 12Merlin Gerin
trip unit settings - details electronic STR45AE
E32682
1
2
1
4
3t
Ir1STR 45AEfault
0,4...1In
60 70 80 90
105 % Ir
2Ih.4
Io
.63
.8
tIc1
Ir
test
Ir
.9
Im.95 3
4
5 6 8 10 .3 .2 .1 .85 .8 0 .9
.3 .5 .2 .95 .3 .2 .4
.5
1
tr
xInIh th Im tm IA
.85 .8
+
S
120 60 30 15
xIo
1 240
2 1.5 .3 .2 .1
3 Im
1,5...10Ir
xIr
xIn
.6 .4 .3 .2
4
480on
0
I2t
off
xIr
1
.1on
I2t
.1off
i18
T
+tr
at 1.5Ir
Ic1
TFR
C 801NH C 1001NH C 1251NHA x In
tm
th
20
23
0E33461
Ir
Im
I
I
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
SettingSTR45AE6 8
5
Compact C801N/H/L Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.5
1
.8
1
1.5
10
x In
x Io
x Ir
Overload time delayE32689
Compact C1001N/H/L 1
In = 1000 A
2
tr
15...480 s
Compact C1251N/H/L 1
In = 1250 A
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
5 6 8
Example : C1001N : In = 1000 A, Ir = 720 A, Im = 3600 A,
E33462
In 1 Io
1000 A 0.5 0.63 0.8 1 coarse setting 800 A 0.8 0.85 0.875 0.9 0.925 0.95 0.975 1 Ir = 800 x 0,9 = 720 A
.5
1
.8
1
1.5
10
x In
x Io
x Ir
2
Ir
Short circuit time delayE33465
3
Im
1.5
2
3
4
5
6
8
10
4Im = 720 x 5 = 3600 A
tmI2t off
0...0,3 s
0...0,3 s
tmon I2t
Options : voir page 30Merlin Gerin
27
trip unit settings - details electronic STR45BE
E32683
1
2
1
3
4t
Ir1STR 45BEIotest
0,4...1In
60 70 80 90
105 % Ir
2Ih.4
.63
.8
t
Ir
Ir
.9
Im.95 3
4
5 6 8 10 .3 .2 .1
.3 .5 .2 .4 .3 .2 .1on
.5
1
xInIh th
tr
.85 .8
Im tm
+
S
120 60
xIo
1 240
2 1.5 .3 .2 .1
3 Im
1,5...10Ir
xIr
xIn
.6 .4 .3 .2 .1
30 15 480
4
0on
0
It2
off
It2
off
i
T
+tr
at 1.5Ir
T
tm
th
0
Ir
Im
I
E33461
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
Setting STR45BECompact C801N/H/L6 8
5
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.5
1
.8
1
1.5
10
x In
x Io
x Ir
Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
Overload time delayE33479
Compact C1001N/H/L 1
In = 1000 A
2
tr
15...480 s
Compact C1251N/H/L 1
In = 1250 A
E33462
Io.63 .8 .85
.9
Ir.95 3 2
4
Im
5 6 8
Example : C1001N : In = 1000 A, Ir = 720 A, Im = 3600 A,
In 1 Io
1000 A 0.5 0.63 0.8 1 coarse setting 800 A 0.8 0.85 0.875 0.9 0.925 0.95 0.975 1 Ir = 800 x 0,9 = 720 A
.5
1
.8
1
1.5
10
x In
x Io
x Ir
2
Ir
Short circuit time delayE33466
3
Im
1.5
2
3
4
5
6
8
10
4Im = 720 x 5 = 3600 A
tmI2t off
0...0,3 s
tmon I2t
0...0,3 s
Options : voir page 30 28Merlin Gerin
trip unit settings - details electronic STR55UE
E32684
1
2
1
4
3
5t
1
IrSTR 55UEfault
0,4...1In
60 70 80 90
105 % Ir
26 8A B
Io
.63
.8
tIc1
Ir
test
Ir
.9
Im.95 3
4
5 6 4
I
5
Ih.3
.4
.5
1
tr
xInIh th Im tm IC 801 NH L C 1001 NH L A 10 8 B 15 8
.85 .8
xIo
1 240
2 1.5 .3 .2 .1
xIr
8 3 10 2 .3 .2 .1 .85 .8 Ic1 .9
.5 .2 .4
3 Im
1,5...10Ir
xIn
xIn
.6
+
S
120 60 30 15
.4 .3 .2
.95 .3 .2
4 5 I0Ir Im I 2...A/B x In
480on
0
0
TFR
C 1251NH 10 12
i
T
+tr
I2t
off
xIr
1
.1on
I2t
.1off
at 1.5Ir
tm
th
I
E33463
Io.63 .8 .85 .9 .5 1
Ir.95 3 2
Im4 5 6 8 1.5 10 4 3 2 5
I6 8 A B
Setting STR55UECompact C801N/H/L Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.8
1
x In
x Io
x Ir
x In
Overload time delayE32689
Compact C1001N/H/L 1
In = 1000 A
2
tr
15...480 s
Compact C1251N/H/L 1
In = 1250 A
E33464
Io.63 .8 .85 .8 .9 .5 1
Ir.95 3 2 1
Im4 5 6 8 1.5 10 4 3 2 5
I6 8 A B
Example : C1001N : In = 1000 A, Ir = 720 A, Im = 3600 A, I = 6000 A
In 1 Io
1000 A 0.5 0.63 0.8 1
coarse setting 800 A Ir 0.8 0.85 0.875 0.9 0.925 0.95 0.975 1 Ir = 800 x 0,9 = 720 A 3 Im 1.5 2 3 4 5 6 8 10
x In
x Io
x Ir
x In
Short circuit time delayE32690
4 5 I 2 3
Im = 720 x 5 = 3600 A 4 5 6 8 A B
tmI2t off
0...0,3 s
0...0,3 s
tmon I2t
I = 6 x In = 6000 A
C801 N/H L C1001N/H L C1251N/H
A B
10 8 15 8
10 12
Options : voir page 30Merlin Gerin
29
remote indication and electronic trip unit options STR45AE/BE, STR55UE
indicationLED alarmeE26031
Fault indication - option F this option is not available on the STR45BE.STR 53 UE
E23534
test P > Ir > Im > Ih
fault
60
60 75
75
> 90 90> 105 %Ir 105 %Ir
STR45AE/BE STR55UE optionsE26030
E32693
6
E32694
60,8...1 Ir
R
Ic1
Ic2
0,5...1 Ir
Ic.9 .88 .85 .8 1 .93 .95 .98
Load shedding control - option R Ic1 = 0,8 to 1 6 Ic2 = 0,5 to 1
E26029
T.5 .4 .3 .2 x In 1
E23691
Ih
.6 .7 .8
7
E32692
7
Ih
0,2...0,6 In
Ih
0,2...0,6 In
th (s) .4.3 .2on
.4 .3 .2
0,1...0,4 s ON I2tI2t OFF
0,1...0,4 s
.1 .1 2 I t off
th
8
th 8
Earth fault protection - option T earth fault protecyion setting for your network 7 Ih = 0,2 to 0,6 In I2t = constant : ON or OFF 8 th = 0,1 to 0,4 s
30
Merlin Gerin
testing of electronic trip units STR22SE, STR23SE, STR53UE, STR25DE, STR35SE/GE STR45AE/BE, STR55UEtesting of electronic trip unitsmini test kitE23858
A test socket on the front of the electronic trip units enables connection to a mini test kit or calibration test kit. These kits tests trip unit operation and circuit breaking tripping.
calibration test kitE23857
MERLIN
GERIN
The calibration test kit checks the protection systems by measuring the real tripping times: c at 1.5 x Ir (overload protection), c at 1.5 x Ir (short circuit protection), c at 0.8 x In (earth-fault protection). This apparatus checks that the trip unit is operational and that the breaker will trip.
Merlin Gerin
31
trip unit settings - details electronic STR22ME, STR35ME for motor protectionE26985
t
E32564
1 1 2
Ir In=50AIr 37.5 40 35.5 42.533.5 31.5 30 50 45 47.5
ImSTR 22 ME7,2Ir 7,0s
u1,05 Ir IEC 947.4 / cl.10
3 4 5test
A
Ir
13 Ir
0
Ir
13Ir
I
Protection settings (STR22ME) c overload protection, adjustable threshold Ir 1 , conformes to tripping class 10 according to IEC 947-4-1 2 ; c protection against single phase operation : initiates circuit breaker opening in 3.5 to 6 s ; c short circuit protection : v fixed threshold, Im (13 x Ir) 3 , v fixed time delay 4 . c instantaneous protection against high short circuits, fixed threshold (13 x In) 5 . Indication as standard Indication of load by diode on front face : c non operational for I < 1.05 x In ; c flashes for I u 1.05 x In.
trip unit STR22ME rating(A) adjustment thresholds (A) 40 24 25.5 27 28.5 50 30 31.5 33.5 35.5 80 48 51 54 57 100 60 63 67 71 150 90 95 101 107 220 132 140 148 157
30 37.5 60 75 113 166
32 40 64 80 120 177
34 42.5 68 85 127 187
36 45 72 90 135 198
38 47.5 76 95 142 209
40 50 80 100 150 220
32
Merlin Gerin
trip unit settings - details electronic STR43ME for motor protectionE26987
t
E32566
1
2
3
1 2
STR 43 MEIo.7 .6 1 .8
P
>Ir
>Im
Ir.88 .85 .8 .90.93 .95 .98 1
Im9 10 8 7 6 11 12 13
3 4 5
Atr tm Ir Im I
+test
-
tr
x Io
x Ir
10
10Aclass
207.2 tr
0
Ir
I
Protection settings (STR43ME) c overload protection : v adjustable threshold, Ir 1 , v adjustable long time delay 2 , conformes to trip unit classes types 5, 10 and 20 according to IEC 947-4.1 ; c protection against single phase operation : initiates circuit breaker opening in 4 s 10% ; c short circuit protection : v adjustable threshold, Im (6 to 13 x Ir) 3 , v fixed time delay 4 ; c instantaneous protection against high short circuits, fixed threshold (13 x In) 5 .
Overload protection settingsCompact NS400 Io (coarse setting) 0.5 0.63 0.7 0.8 Compact NS630 Io (coarse setting) 0.5 0.63 0.7 0.8 Ir (fine adjustment) 0.8 0.85 0.88 160 170 176 202 214 222 224 238 246 256 272 282 Ir (fine adjustment) 0.8 0.85 0.88 252 268 277 318 337 349 352 374 388 403 428 443 0.9 180 227 252 300 0.93 186 234 260 298 0.95 190 239 256 304 0.98 196 247 274 314 1 200 252 280 320
0.9 284 357 396 472
0.93 293 369 410 469
0.95 299 377 418 479
0.98 309 389 432 494
1 315 397 441 504
Example of protection settingsE32529
8 .7 .63 .5
Io
9 1 .88 .85
.9
Ir
.93 .95 .98
5 4 3 6
Im
Eg. In7 8
400 A 0.5 0.63 0.7 0.8 0.9 1 coarse setting 320 A 0.8 0.85 0.88 0.9 0.93 0.95 0.98 1 Ir = 320 A x 0.93 = 298 A
6
Io Ir
.8
1
13
x In
x Io
x Ir
8 .7 .63 .5
Io
9 1 .88 .85
.9
Ir
.93 .95 .98
Im5 4 3 6
6 7 8 13
Im
6
7
8
9
10 11 12 13
Im 320 A x 0.93 2980 Ir == 298 A x10 == 298 A
.8
1
x InE33816
x Io
x IrIncreased setting range with 150-250 A CTsNS400 (150 A) Io (coarse setting) 0.5 0.63 0.7 0.8 NS400 (250 A) Io (coarse setting) 0.5 0.63 0.7 0.8 Ir (fine adjustment) 0.8 0.85 0.88 60 63,76 66 75,6 80,32 83,16 84 89,25 92,4 96 102 105,6 Ir (fine adjustment) 0.8 0.85 0.88 100 106,25 110 126 133,87 138,6 140 148,75 154 160 170 176 0.9 67,5 85,05 94,5 138 0.93 69,75 87,88 97,65 111,5 0.95 71,25 89,77 99,75 114 0.98 73,5 92,61 102,9 117,6 1 75 94,5 105 120
0.9 112,5 141,75 157,5 180
0.93 116,25 146,57 162,75 185
0.95 118,75 149,62 166,25 190
0.98 122,5 154,35 171,5 196
1 125 157,6 175 200 33
Merlin Gerin
trip unit settings - details electronic STR35ME for motor protectionE32685
1
1
3
4t
OFF 1
STR 35MEon off
60 70 80 90
105 % Ir
Io.8 .63 .5
1
tIr
test
Ir
.9
Im.95 3
4
5 6 8 10 .3 .2 .1
xIn
off
120s Im
.85 .8
xIo
1
2 1.5 .3 .2 .1 0on
3 4
xIr
off LR inoprant LT inoprative Ir = In
tm I 1,5 IrA
+
0
It2
off
iC 1251NH 12
C 801 NH L C 1001 NH L A x In 15 8
tm
0
Ir
Im
I
I
E33467
Io.8 .63 .5 off 1 .85
.9
Ir.95 3 2
4
Im
Settings STR35ME6 8
5
Compact C801N/H/L Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1 Io 0,5 0,63 0,8 1
1Ir 1 400 504 640 800 Ir 1 500 630 800 1000 Ir 1 625 788 1000 1250
In = 800 A 0.975 390 491 624 780 0.975 488 614 780 975 0.975 609 768 975 1219 0.95 380 479 608 760 0.95 475 599 760 950 0.95 594 748 950 1188 0.925 370 466 592 740 0.925 463 583 740 925 0.925 578 728 925 1156 0.9 360 454 576 720 0.9 450 567 720 900 0.9 563 709 900 1125 0.875 350 441 560 700 0.875 438 551 700 875 0.875 547 689 875 1094 0.85 340 428 544 680 0.85 425 536 680 850 0.85 531 669 850 1063 0,8 320 403 512 640 0,8 400 504 640 800 0,8 500 630 800 1000
.8
1
1.5
10
x In
x Io
x Ir
Compact C1001N/H/L 1
In = 1000 A
Compact C1251N/H/L 1
In = 1250 A
E33468
Io.8 .63 .5 off 1 .85
.9
Ir.95 3 2
4
Im
5 6 8
Example : C1001N : In = 1000 A, Im = 6000 A,
In 1 Io 0.4 0.5 0.63 0.8
1000 A 1 OFF
.8
1
1.5 10
x In
x Io
x IrIr 3 Im 1.5 2
pre-rating 1000 A oveload protection inoperative 3 4 5 6 8 10
Short circuit time delayE32690
4
Im = 6 x In = 6000 A
tmI2t off
0...0,3 s
0...0,3 s
tmon I2t
C801 N/H L C1001N/H L C1251N/H
A B
10 8 15 8
10 12
34
Merlin Gerin
supplementary functions
Vigi bloc and Visu bloc ........................................................ 36 plug-in base ........................................................................................ 37 withdrawable chassis for Compact NS100 to 630 .............. 38 universal chassis for Compact C801 to 1251 ....................... 39 locking options ................................................................................. 40 locking and lead sealing ............................................................... 41
Merlin Gerin
35
Vigi bloc and Visu bloc
Vigi bloc380/415 440 500/525 660/690 250 70 65 50 10 85
Ics = 100% Icu cat A IEC 947.2UTE VDE BS CEI UNE NEMA
O
push to trip
40/100alarm %Ir 90 105
In=100A.8 .7 .63 .5Ir Im
STR 22 SEIo.9 1 .88 .85 .8 1
Ir.9 .93 .95 .98
Im5 4 3 2 10 6 7 8
+
-
x In
x Io
x Ir
test
avant test dilectrique enlever ce couvercle
intermediate terminal shield (1) sealable fixing screw for the intermediate terminal shield sealing point for plate blocking access to the settings plate blocking access to the settings test push-button reset push-button rating plate
310 150 60 0 3 1 0.3 In(A) t(ms) vigi MH 10
before dielectric test remove this cover
R
vigiNS 100/160 NHL 200/440 V - 50/60 Hz-25N 1 3 5
The Vigi bloc provides residual current protection against indirect contact and the risk of fire and destruction due to faults to earth. It actuates the trip unit by means of a direct mechanical action. The Vigi bloc can be fitted with an alarm contact (SDV) which can be used to remotely indicate that the device has tripped due to an earth fault . The "Test" push button allows regular verification that the Vigi bloc is operational by simulating an earth fault. The test cannot be carried out with the circuit braker in the open position. The "Reset" push button. After all trips initiated by the Vigi, this button must be pressed in order to reset the Vigi.
E32869
T
slot for SDV auxiliary switch (optional)
HS 0.03 (t = 0)
2
4
6
trip time delay settings (2) sensitivity settings
(1) The intermediate terminal shield is necessary in order for the Vigi to function. (2) When the device is set to 30mA, any time delay selected is nullified i.e. instantaneous operation.
rating plateE32870
avant test dilectrique enlever ce couvercle before dielectric test remove this cover
vigiNS 100/160 NHL 200/525 V - 50/60 Hz-25N 1 3 5
type of Vigi module operational voltage and frequency standardised symbols: (see page 4) immunity to current 8/20 wave and electromagnetic environment class A immunity to DC components (6 mA insensitivity) minimum operating temperature as per VDE 664 schematic diagram
T 2 4 6
-25
The Visu blocThe standard fixed versions of the Compact circuit breakers exist in ratings 100 A to 1250 A. A Visu bloc can be directly connected, which provides visible break isolation according to French standard NF C 13.100 : the contacts are visibles through a transparent cover, and are operated by means of a handle. The Visu bloc is padlockable as standard with barrel locking optional. Specific auxiliaries are available for the Visu bloc : auxiliary contacts, terminal shields, etc. The Compact NS100/630 and C801/ 1251 can be equiped, as an option, with a pre-tripping mechanism preventing the "on-load" opening of the Visu bloc.
The Visu bloc must be fitted with a CAM contact and the circuit breaker with a voltage release. Connection c fixed front connected. The Compact circuit breakers with Visu bloc are delivered ready for connection by bars or cables fitted with lugs (see page ?) ; c connection of bare cables : upstream by a set of terminals for the Visu bloc and downstream a set of teminals for the Compact; v accessories : the Visu bloc can be fitted with terminal spreaders, right angle terminals, terminal extensions and lugs. c fixed rear connected : by adaptation of the Compact's specific rear connectors with the Visu bloc, delivered per pole.
The Compact circuit breakers with Visu bloc can be fitted with specific short terminal shields (rear connection) or standard long terminal shields (front connection), both of which are lead sealable (see page ??). Accessories Compact NS100/630 with Visu bloc can be fitted with : c in the Visu bloc : auxiliary contacts (OF, CAM), Ronis or Profalux barrel locks, a contact to earth the neutral (obligatory if the tansformer neutral is earthed downstream of the Compact with Visu bloc), etc. c in the Compact NS frame : all the Compact NS auxiliaries.
36
Merlin Gerin
plug-in version
the plug-in circuit breakerunpluggingE32519
E32520
push to trip
push to trip
1 - open the circuit breaker.E32541
3 - pull the circuit breaker out horizontally. The auxiliary circuits are disconnected by the automatic auxiliary connector block located at the back of the device. Safety mechanism If the circuit breaker is closed (I/ON position) when pulled out, advanced opening ensures operator safety, i.e. the poles automatically open before the power connections are withdrawn.
push to trip
2 - remove the two fixing screws.
plugging in
1 - open the circuit breaker. 2 - plug the circuit breaker in. 3 - refit the fixing screws. 4 - the circuit breaker is ready for operation. c device plugged in: IP40 (with terminal shields), c device unplugged: IP20, c device unplugged and base fitted with safety shutters: IP40.
degree of protection against direct contact with the power circuits
Merlin Gerin
37
withdrawable chassis for Compact NS100 to 630
chassis mounted plug-in circuit breakerdisconnection
E32538
E32539
CLAC ! CLAC !
push to trip
push to trip
1 - open the circuit breaker.E32540
3 - simultaneously pull down on the two handles until the two locking levers "clack". the auxiliary circuits are disconnected at the same time as the power circuits, unless the device is equipped with a manual auxiliary connector (see below). Advanced opening ensures operator safety, as with the plug-in version.
push to trip
2 - turn the two locking levers.
removal
1 - disconnect the circuit breaker (as above). 2 - unplug the manual auxiliary connector (if installed). 3 - turn the two locking levers, as for disconnection.
4 - push the two handles down. 5 - pull the circuit breaker out forwards.
connection
1 - turn the two locking levers. 2 - simultaneouly push up the two handles.
Connection of the auxiliary circuits and circuit breaker advanced opening occur as for disconnection.
degree of protection with circuit breaker disconnected or removedE23894
c no special equipment: IP20, c base fitted with safety shutters: IP40.
auxiliary circuit test
This function is available when the circuit breaker is equipped with the manual auxiliary connector. Following disconnection, the circuit breaker can be operated (toggle, "push to trip" button) to check the auxiliary circuits are still connected.
indication contacts (optional)
Changeover contacts: c "end-of-connection (fully connected)" contact, c "end-of-disconnection (fully withdrawn)" contact.Merlin Gerin
38
universal chassis for Compact C801 to 1251
E32687
the withdrawable circuit breaker and universal chassis11
10 9 8
The universal chassis for Compact C801 to C1251 is particularly well suited to main incoming circuit breakers : c racking in and out is possible with the door closed by means of a racking handle which is normally stored in the base of the chassis ; c 2 positions (racked-in and rackedout) are indicated : v locally by a position indicator, v remotely by auxiliary contacts (2 racked-in contacts and 2 racked-out contacts) ; c the circuit breaker can be operated from the exterior of the panel. Locking A wide range of locking options : c chassis locking in both the racked-in and racked-out positions by 3padlocks and 2 barrel locks, accessable from the panel exterior ; c door interlocking, with the breaker racked-in ; c can be locked in the racked-in position with the panel door open.E33469
Door cut-out A set of 'surrounds' allow : c optimises the number of cut-outs : only 1 cut-out per circuit breaker : v 3 and 4 poles, v toggle or direct rotary handle operated ; c guarantees a degree of protection to IP 40. This set comprises : c a frame for the chassis front plate, which gives access to the locking facilities and racking mechanism (see below) ; c a frame for the circuit breaker handle with window to view trip unit settings. Fixation c rear : panel or rail mounted ; c on a shelf : solid or rails. Power connections c by cables with crimped lugs ; c by flat or edgewise bars. Auxiliary connections The standard Compact C withdrawable terminal block.frame for chassis front plate
7
11 2 3 4 5 6 7 8 9
2
3
4
5
6
door interlocking (optional) 2 'racked-out' auxiliary contacts (optional) position indicator locking by 3 padlocks in the 'racked-in' (or 'racked-out') position racking handle storage locking in the withdrawn (or 'racked-out') position (optional) racking interlock (optional) 2 'racked-in' auxiliary contacts (optional) extraction operators (1)
frame for toggle operation with window to view trip unit settings
10 connector for withdrawable terminal block (optional) 11 safety shutters IP 40 (optional)
frame for rotary handle operation with window to view trip unit settings
Door front covers and surrounds
Merlin Gerin
39
locking options
Whatever locking method is chosen, the circuit breaker will always trip in the event of a fault. c each device is able to accept between 1 and 3 padlocks of diameter 5 to 8 mm.
c locking in the OFF/O position guarantees isolation according to IEC 947-2.
toggleE23895 E23896
function locking device in position O locking device in position O or Ipush to trip
means padlock padlock
accessories required removable lock. device fixed locking device
for circuit breaker NS100630 C801C1251 c c c
push to trip
standard direct rotary handleE32537
function locking device position O
means padlock keylock
accessories required locking device and keylock
for circuit breaker NS100630 C801C1251 c c c c
ON I
pr pr of of al al ux ux
O OFF
MMC type direct rotary handle
function locking device position O device in position I : door opening prevented door open: device closing prevented
means padlock rotary handle (integral)
accessories required
for circuit breaker NS100630 C801C1251 c c
extended rotary handle
function locking in OFF position O door opening prevented device in I position: door opening prevented door open: device closing prevented
means padlock keylock rotary handle (integral)
accessories required
for circuit breaker NS100630 C801C1251 c c c
motor mechanismE23899
function locking in OFF position O motor mechanism locked out
means padlock keylock
accessories required 1 locking device
for circuit breaker NS100630 C801C1251 c c c c
2
push to trip
1
auto man u
Opush OFF
Ipush ON
1 - set the selector on the front to the manual position. 2 - pull the locking lever. 3 - fit the padlock(s).
It is then impossible to actuate the spring charging lever, the closing pushbutton and the manual/automatic operation selector.
40
Merlin Gerin
locking and lead sealing
withdrawable chassisE23900
function connection prevented lock in connected or disconnected position
means padlock keylock
accessories required locking device and keylock
push to trip
E23905
different lead sealing systems
seal front cover fixing screw
inhibited operations c removal of front cover c access to auxiliaries c removal of trip unit
E23906
rotary handle fixing screw
c removal of the rotary handle c access to auxiliaries c removal of trip unit
E23907
motor mechanism cover locking screw
c removal of the motor mechanism c access to auxiliaries c removal of trip unit
transparent protection plate for trip unit settings
changes in settings: c for overload protection c for short-circuit protection
E23908
transparent protection plate for Vigi module settings intermediate terminal shield on Vigi module
E23909
changes in settings for earth fault protection
c disabling of earth fault protection function c access to power connection (protection against direct contact)
E23911
E23910
terminal shield fixing screw
access to power connections (protection against direct contact)
interlockingPrevents closing of a circuit breaker when another is already closed.
function interlocking of 2 circuit breakers fitted with toggle interlocking of 2 circuit breakers fitted with rotary handle
means double-bolt mechanical device mechanical device 2 keylocks (1 key)
Merlin Gerin
41
42
Merlin Gerin
operational conditions
environmental conditions ............................................................. 44 commissioning and exploitation ............................................... 46 operational anomalies .................................................................... 48 practical advice ................................................................................. 49
Merlin Gerin
43
environmental conditions
ambient temperature
Ambient temperature between 25C and +40 C: The rated characteristics for Compact NS circuit breakers are guaranteed if the temperature of the air immediately surrounding the device is within the above range. Ambient temperature between +40C and +70C : Take into account the derating coefficients presented in the technical documents: c for circuit breakers with a thermalmagnetic trip unit, there is a natural drop in the thermal tripping threshold (overload protection), c for circuit breakers with an electronic trip unit, there is a drop in the maximum setting authorised for overload protection. Ambient temperature above +70C: Various systems trip the circuit breaker to protect components from the effects of excessive temperature. It follows that continuity of service for the electrical
operation
installation is not guaranteed if the circuit breakers operate at temperatures greater than 70C. Ventilation (natural or forced-air) should be provided for switchboards to avoid temperatures greater than 70C.
storage and commissioningIn their original packing, Compact NS circuit breakers may be stored at temperatures ranging from -55C to +95C. Commissioning should be carried out at normal ambient temperatures (see above). However, commissioning may exceptionally be carried out at an ambient temperature ranging from -35C to -25C.
special atmospheric conditions
Compact NS circuit breakers operate within their rated characteristics in all normal climatic conditions. They have successfully passed (no drop in rated characteristics) the tests defined by the following standards: c IEC 68-2-2 : dry heat at +85C, c IEC 68-2-1 : dry cold at 55C, c IEC 68-2-30 : damp heat (temperature + 55C, relative humidity 95 %), c IEC 68-2-11 : salt spray.
Compact NS circuit breakers are designed to operate in industrial atmospheres as defined in IEC standard 947 (pollution degree i 3). It is however advised to ensure that the circuit breakers are installed in correctly cooled switchboards without excessive dust.
vibrations
Compact NS circuit breakers are guaranteed against mechanical or electromagnetic vibration levels as specified in the following standards: c IEC68-2-6, c Veritas NI122E, c Lloyd's Register of Shipping, c JIS 8370.
Excessive vibration may however provoke untimely tripping, loosening of connections or even rupture of parts.
44
Merlin Gerin
altitude
Compact NS circuit breakers are designed to operate within their rated characteristics at altitudes up to 2 000 metres.altitude (m) maximum operating voltage(V) rated thermal current (A) at 40C
Above 2 000 m, modifications in the ambient air characteristics (dielectric withstand capacity, cooling capacity) result in the following derating:i 2000 690 In 3000 600 0,96 x In 4000 480 0,93 x In
electromagnetic disturbances
Compact NS circuit breakers equipped with an electronic trip unit and a Vigi module are protected against: c overvoltages produced by electromagnetic switchgear, c overvoltages produced by atmospheric disturbances and conducted by electrical networks (eg. lightning strikes), c devices emitting radio waves (radio transmitters, walkie-talkies, radar, etc.), c electrostatic discharges produced directly by operators.
They pass EMC (electromagnetic compatibility) tests in compliance with the following international standards: c IEC 255-22-1 class 3: v 10 kV 1.2 / 50 s overvoltage wave, v 2.5 kV1 MHz damped oscillatory wave, c IEC 1000-4-2 class 4: electrostatic discharges 15 kV, c IEC 1000-4-3 class 3: 10 V/m radiated electromagnetec fields, c IEC 1000-4-4 class 4: 4 kV fast transient waves, c IEC 1000-4-5 class 4: v 4 kV 1.2 / 50s voltage waves, v 2 kA 8 / 20 s current waves, c EN 50081-1 class B: conducted and radiated emissions in switchboards, c IEC 947-2 annex F. The above tests ensure: c absence of nuisance tripping, c overload tripping times.
Merlin Gerin
45
commissioning and exploitation
prior to commissioning new circuit breakers or following an extended shutdown
A general check requires only a few minutes and eliminates any risks of incorrect operation due to error or neglect.
All checks must be carried out with the switchboard de-energised. For compartmented switchboards, it is sufficient that all accessible sections be de-energised.A c B c c c c C c c (2) D c c c c c E c c c c F c G c c c c
prior to commissioning periodically during service life following servicing on the switchboard periodically during an extended shutdown following an extended shutdown
(1)
c c
A B C D E F
electrical tests switchboard inspection conformity with diagram device mounting, connectionsauxiliaries mechanical operation
G operation of the electronic trip units and the Vigi modules.(1) extended shutdown or modifications in the switchboard (2) modification in the switchboard
electrical tests
Insulation and dielectric withstand capacity tests are carried out prior to delivery of the switchboard. These tests are governed by applicable standards and must always be carried out by an authorised specialist. Check that the circuit breakers are installed in a clean environment, free of dust and all installation debris (tools, wiring, chips, metal particles, etc.).
switchboard inspection
compliance with diagram
Check the conformity of devices with the installation diagram: v ratings and breaking capacities indicated on the rating plates, v trip unit identification (type, rating), v presence of additional functions (Vigi earth fault protection, motor mechanism, rotary handle, auxiliaries, indication and measurement modules),
v protection settings (overload, shortcircuit, earth fault), v outgoing circuit identification on the front of devices, v for Vigicompact earth fault protection circuit breakers, check that the intermediate terminal shield is installed, otherwise the earth fault protection function is inoperative.
device mountingstatus of connections and auxiliaries
Check device mounting in the switchboard and the tightness of power connection.
Check that auxiliaries and accessories are correctly installed: v motor mechanism modules or rotary handles, v accessories (terminal shields, door escutcheons, etc.), v connection of auxiliary circuits.
mechanical operation
Check the mechanical operation of devices: v contact opening, v contact closing, v tripping using the "push to trip". Check the electronic trip units using the mini test kit or calibration test kit (see page 13). Check the Vigi modules using the test button on the front plate. This test guarantees tripping in the event of an earth fault.
operation of the electronic trip units and the Vigi modules
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Merlin Gerin
following tripping
trip indicationTripping is indicated on the front:
by the toggleE32881 E32882
by the rotary handleE32883
by the motor mechanism
O
OFF
discharged
ON (closed) trippedpush to trip
ON (closed)ON I2
OFF (open/ isolated)
trippedpush to trippush to trip
O OFFmanu /auto
1
OOFF push
Ipush ON
OFF (open/ isolated)
identifying causesA circuit breaker must NEVER be reset before identifying and eliminating the cause of the trip.
Causes may be multiple: c depending on how the circuit breaker is fitted out, certain auxiliaries (SD, SDE, SDV, etc.) or LED indications on the trip unit are important means in identifying the cause of the trip (see table page ??),
c depending on the cause of the trip and prior to restarting the installation, certain precautions must be taken, namely insulation and dielectric tests on the installation, in part or in whole. These checks and tests must be carried out by qualified personnel.
circuit breaker resetWhen the lever is in the "tripped" position, the device must first be reset by setting the lever to the O/OFF position before reclosing (ON position).E32506
toggleE32884
rotary handle
ON "I" closing
ONtrippedpush to trip
ON I
trippedpush to trip
OFF "O" reset
O OFF
closing
OFF reset
motor mechanism See page ?? for the applicable procedure.
Merlin Gerin
47
operational anomalies
The table below does not list all possibilities, but can nonetheless assist in troubleshooting and providing corrective action. problemsrepeated tripping SD SDE "alarm" on electronic trip units SD
If however, the problem persists, consult the Merlin Gerin after-sales support department.
indication
probable causec protection settings are incorrect.
corrective action
check the rated current of the supply network and set the proper value. check the setting for overload protection.
c supply voltage for the undervoltage release (MN) is too low or subject to major fluctuations.
check the value of the power supply voltage and correct it. (DC networks are subject to major voltage fluctuations when loads are turned on. Voltage drops may provoke tripping on the circuit breaker by the MN release.
SD
c inadvertent powering of MX shunt release. c ambient temperature too high. c Vigi module settings are incorrect. c insulation fault.
determine the causes of the powering.
SD SDE SD SDE SDV circuit breaker does not close manual operation SD SDE SD
ventilate the room or the device.
check the insulation of the protected circuit.
c supply network is faulty. c MX shunt release is supplied with power. c MN undervoltage relese is not supplied with power.
identify and eliminate the fault. determne the causes of the supply of power. check for power across the terminals and that connections are correct. check the installation diagram and the interlocking system (electrical or mechanical) of the two circuit breakers. c check that the selector on the front is in the automatic position. c check the power supply for the motor mechanism module, the motor and the closing signals. c identify and eliminate the fault. c manually charge the motor mechanism module spring.
OF
c circuit breaker is interlocked.
motor mechanism
OF
c closing order inoperative.
SDE SD
c the device tripped due on an electrical fault.
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Merlin Gerin
practical advice
maintaining performance levels of circuit breakers
Due to their design and characteristics, Compact NS circuit breakers require no maintenance. It is nonetheless recommended to ensure that devices operate in the conditions specified in the catalogue, namely:
c electrical and mechanical conditions, c environmental conditions (see pages 44 and 45).
improved safetyE32885
The following options are available: c long or short terminal shields providing IP 40 protection, c a sealable plate to block access to settings (thermal-magnetic trip units), c flexible phase barriers to improve insulation between power connections, c toggle cover to ensure IP 43 protection.
The base (plug-in configuration) can be fitted with: c shutters to block access to power parts (IP 4x protection).
push to trip
improved comfortE32886
c a full range of electrical indication auxiliaries (OF, SD, SDE, SDV), c indication of voltage presence across device terminals, c current measurement module with an incorporated ammeter or remote indication of the measured value, c load-circuit identification means (see Telemecanique catalogue, catalogue number AB1), c alarm indications (standard on devices equipped with electronic trip units).
c indication options on trip unit STR53UE (see page 12), c Dialpact indication, measurement and control modules.
push to trip
improved aestheticsE32887
c a range of escutcheons providing different protection (IP) levels for fixed devices, plug-in and withdrawable configutations, motor mechanism modules and rotary handles.
push to trip
Merlin Gerin
49
notes
50
Merlin Gerin
Merlin Gerin
51
notes
52
Merlin Gerin
Schneider Electric SA
postal address 38050 Grenoble cedex 9 France tel: (33) 04 76 57 60 60
As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.this document has been printed on ecological paper.Publishing: Schneider Electric SA Design, production: AMEG SA Printing: Color Press Annecy
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