basler electric

SYNC-CHECKRELAY

MODEL BE1-25

Basler ElectricD Highland, Illinois

Publication 91702 00 990

F}evision F

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INTRODUCTI0N`

This manual provides information concerning the operation andinstallation of the BET-25 Sync-Check f}elay. To accomplish this, thefollowing is provided.

I Specilicalions

I Functional description

I Mounting information

I Set(ing procedure/example.

F]e[ays witli Type T power supply require a contact sensing modulewhich comes supplied with its own manual, publication 91702 06 99o.

A Service Manual, publication 9 1702 00 620, is available on specialorder as an aid in troubleshooting and repair.

THIS MANUAL MAY BE USED IN PLACE OF ALL EA13LIER EDITIONS.FOR CHANGE INFORMATION SEE SECTION 6.

BCDEF

ECA 7274 8381 8459 9728 11378 12467

First Printing: June 1985

Printed in USA

25 March 1992

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11 is not the intention of this manual to cover all details and variationsin equipment, nor does this manual provide data for every possiblecontingency regarding installation or operation. The availability anddesign of all features and options are subject to modification withoutnotice. Should further intormation be required, contact Basler ElectricCompany, Highland, lllinois.

BASLEFI ELECTFtlc, BOX 269 H[GHLAND, [L 62249 USA

PHONE 618-654-2341 FAX 618-654-2351

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CONTENTS

Section 1

Section 2

Section 3

Section 4

GENERAL INFORMATION

DescriptionApplicationsSync-Check FunctionContact SensingVoltage Monitoring Options

Mode SwitchesCondition SwitchesVoltage Monitor Output RelayVoltage Monitor OptionVoltage Difference Option

Other OptionsExpandable Window OptionExternal Condition SwitchesP ush-To-En ergize OutputsPower Supply Options

Model and Style NumberStyle Number ExampleStyle Number ldent.rfication Chart

Specifications

CONTFIOLS and INDICATORS

FUNCTIONAL DESCRIPTION

GeneralFunctional Description

Steprd own TransformersZero Cross and Phase Difference MeasurementComparator

Minimum Voltage DetectionContact SensingPower SupplyPower Supply Status Output (Option 3€)Voltage Monitor OptionsTarget Indicator (Optional)

INSTALLATION

General

4-1

Relay Operating Precautions ......................... 4-1Dielectric TestMOunting

BelayPower ModuleContact Sensing Medule

Connections............Switch Settings

Setting Time Delay or Phase AngleCondition and Mode Switches

CoNTENTS - continued

Section 4

Section 5

Section 6

INSTALLATION - Continued

Operational Test ProcedurePreliminary SettingsTest Procedure

MAINTENANCE

GeneralIn-House F`epairStorageTest PlugTest Plug Adapter

Assembling Adapter to Test Pluglf Test Plug Adapter is Unavailable

MANUAL CHANGE INFORIVIATION

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SECTION 1

GENERAL INFORMATION

DESCRIPTION

The BE1 -25 Sync-Check relay is a solid-state synchronism check relay designed to permit breaker closurewhen required minimum phase angle conditions have been held for a specified minimum time. Phase angleand time period requirements can be set from front panel thumbwheel switches. Five voltage measuringoptions are available that can identfty significant line and bus voltage conditions, and use this informationto influence the relay output.

APPLICATION

The BE1 -25 Sync-Check Pelay ls recommended for sitLlations requiring verification that synchronism exists

prior to closing a circuit breaker. Some of these s.rtuations are:

• Paralleling a generatorto a system• Bee§tablishing a connection between two parts of a power system• Supervising fast transfer schemes (where fast pickup and dropout of the phase measuring circuit

are required)

If optional voltage measuring circuits are incorporated, the BE1-25 can determine whether an input is live,dead, or in an overvoltage state.

SYNC-CHECK FUNCTION

The BE1 -25 Sync-Check function measures the phase angle between single-phase voltages of line and bus.Then sync-check verifies that this angle is less than the front panel PHASE ANGLE selector setting. If themeasured angle has met this criteria for the time period defined by the front panel TIME DELAY setting, theSYNC output contact closes.

NOTEBoth line and bus voltages must be at a minimum of 80 Vac to assure response.

The allowable phase angle is adjustable over the range Of 1 to 99 degrees. The time delay is adjustable overeither of two ranges: 1 to 99 cycles, 50/60 Hz (using the bus frequency as the reference), or 0.1 to 99seconds (using the internal crystal controlled oscillator as the reference).

An optional target may be specified to indicate operation of the sync-check function.

CONTACT SENSING

To control operation of the relay, an input from the breaker auxiliary 52b contact is required to signal thebreaker status. If the breaker is open, the relay is enabled to perform its function. When the breaker closes,the 52b input changes state and causes the relay lo terminate its close signal.

The following two configurations Of the 52b input are available to provide additional flexibility for theprotection circuit designer.

• Isolated contact §en§ing monitors a current supplied by the relay through an isolatedcontact.

• Non-isolated contact sensing monitors the presence Of voltage at its input due to theclosure of a contact.

ill.

BE1-25 General Information

VOLTAGE MONITORING OPTIONS

Mode Switches

Two mode switches are located on the voltage monitor card. Mode switch number 1 serves the bus voltagemonitor. Mode switch number 2 serves the line voltage men.rtor. Mode switch positions are as follows:

NORMAL (up) -allows measuring elements to establish live and dead reference levelsfor the input level.

NOT-OVERVOLTAGE (down) - allows measuring elements to establish live and not-overvoltagereference levels for the input level.

When a mode switch is in the Normal Position (up), a dead level is defined as a monitored voltage levelbelow the DEAD reference setting. Pefer to Figure 1-1 for voltage levels. A live level is defined as amonitored voltage above the LIVE reference setting.

When a mode switch is in the NOT-OVEPIVOLTAGE position (down), a dead level is defined as a monitoredvoltage less than the UVE reference setting, and a live level is defined as a monitored voltage greater thanthe LIVE reference setting, but less than the NOT-OVERVOLTAGE setting. (An input is considered to beovervoltage when it exceeds the NOT-OVEBVOLTAGE reference setting.)

It is permissible to operate the line input in either the same mode or a different mode than the bus input.This flexibility allows the relay to be used, for example, to close a generator breaker onto a dead bus, orto prevent closure if the generator and/or bus voltage ls too high.

Condition Switches

Condition switch No. 1 programs the relay to require recognition of certain voltage conditions before thesync-check output i§ allowed. Condition switches No. 2 through No. 5 modify the voltage monitor responseaccording to a programmed Set of external conditions. The possible external conditions are:

• Live Line/Live Bus (LL-LB)• Live Line/Dead Bus (LL-DB)• Dead Line/Live Bus (DL-LB)• Dead Line/Dead Bus (DL-DB)

When a selected condition has been recognized, the voltage monitor circuit may be instructecl toimmediately energize the sync-check output relay, or (if provided) the voltage monitor output relay.(Reference Figure 1-1, Note 1.)

Voltage Monitor Output Pelay

The voltage monitor output relay option provides additional supervision of the breaker closing circuit. or

provides an indication of the existing voltage conditions for the supervisory control system. When a voltagemonitor output relay is installed, the SYNC relay is no longer directly operable by voltage monitor logic.However, the live line/live bus condition may be utilized to enable the sync-check function.

DetailedinstructionsandprecautionsforprogrammingthemodeandconditionswitchesaregiveninSection2.

1-2


SYNC RELAY CONTACTS CLOSEDBY VOLTAGE WONl1.OR LOGIC

SYNC-CHECK LOCIC ENAEILED

80V FIXED WINIMUM VOLTAGE UMIT

(llvE LINEAVE Bus CCNDITIONSYNC-CHECK FUNCTIOu ONLY)

ev ExcEEi]ED. s"c-CHECK LOcic

#8.T,ENT8BL&DAs5T%NSDr"8NEsswy.NO. 1 TO ON PERMITS tJvy

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Figure 1-1. Voltage Monitor Acceptance Zones

Voltage Monitor Option

A voltage monitor is available that checks the vector voltage difference between the two inputs. This canbe used to prevent the closure Of a generator breaker if the voltage difference is too great (even if the phaseangle and voltage level monitoring circuits indicate that proper closing conditions are otherwise present).

Voltage Difference Option

The voltage difference option (included with options 2-f], 2-T, and 2-U) is typicaHy used to reduce theamount of possible system shock or transients when closing a breaker. This option compares the voltagebetween line and bus against a §elected limit, and initiates e.rther an enable or an inhibit signal for the sync-check logic, thereby narrowing the phasor voltage across the breaker contacts (as compared to a simplesync-check acting alone). Figure 1 -2 shows closing zones obtained by combining phasor voltage difference,phase angle limit, and line and bus live/dead voltage limits. If a separate voltage monitor relay is supplied(Output option G or H), the NO contact must be in series with the SYNC relay contact to perform the LL/LBand LOP/BOP enabling functions in figure 1-2.


Figure 1€ may be used as an aid in formulating the voltage difference control settings. Note that the centerreference phasor OVB) represents the monitored bus voltage, while the adjacent phasor OVL) represents themonitored line voltage. The voltage difference control (AV) forms an area of acceptance limit when rotatedthrough 360 degrees. This allows either the voltage difference or the phase angle to be selected, and theremaining value to be calculated.

Since VL is tangent to the voltage difference circle, the voltage difference phasor (AV) is perpendicular toVL at theL phase angle limit. Accordingly, the voltage d.rfference or the phase angle can be calculated byequations 1 and 2 respectively.

AV=VBsino

o=sin-'frv

where

AV = Voltage DifferenceVB = BusvoltageG =PhaseAngle

Note that the point where VL is tangent to the voltage difference circle represents the most extreme conditionof G for a closure. Assuming that a constant voltage difference exists, the following condition is valid: If themagnitude of the line voltage decreases, the phase angle must also decrease to allow sync-acceptance.Therefore, the minimum line voltage possible for sync-acceptance occurs at zero phase angle.

Figure 1-3. Closing Zone Diagram

OTHER OPTIONS

Expandable Window Option

An expandable window option is available to enable a local operator (through a switch) or a remotedispatcher (through the supervisory control system) to expand the preset phase angle window by aprogrammed ratio.

Under normal conditions the phase angle setting is determined by the maximum angular difference that hasbeen calculated to be suitable to meet the expected load flow Of the total system. But under emergencyconditions, the load flow throughout the system may result in excessive phase angle separation across theopened breaker.

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ln order to reestablish load on a previously faulted line quickly, it may be necessary to expand the allowablephase window. With this option, closing a contact Input to the relay expands the preset phase setting bya programmed multiple of 2 or 3 (according to the position of a jumper on the circuit card).

This option is not suggested for use in generator applications for the following reason: The phase anglesetting for a generator breaker is determined by the maximum phase difference which can be tolerated bythe generator when connected to the system. An excessive angle can result in excessive mechanical forcesin the generator and associated mountlngs.

External Condition Switclies

lf a line and bus voltage monitor is incorporated Into the relay, the Internal condition switches may befunctionally operated by remotely located external contacts. This capability is provided by option 2-U or 2-V,but requires a resistor module to be mounted on the relay back panel.

Push-to-Energize Outputs

Push-to-energize oiitpilt sw.riches are available to provide a means of verftying external output wiring withoutthe inconvenience of having to test the entire relay. These optional switches are provided for each isolatedoutput function, and may be actuated by inserting a small nonconductive rod through holes in the frontpanel.

Power Supply Options

Various power supply options are available to allow the BE1 -25 to be used with standard supply voltages.See the style chart for details.

MODEL AND SIYLE NUMBER

The electrical characteristics and operational features included in a specific relay are defined by acombination of letters and numbers which constitutes the device style number. F}efer to Figure 14 for thestyle number identification chart. The style number together with the model number describe the featuresand options in a particular device and appear on the front panel, drawout cradle, and inside the caseassembly. The model number BE1-25 designates the relay as a Basler Electric, Class 100, Sync-CheckRelay.

Style Number Example

The following style number identification chart illustrates the features and options for BE1-25 relays. Forexample, if the style number were M9H A6P N4ROF the device would have the following:

BE1-25 Model NumberM Single-phase sensing9 Expandable phase angle windowH Voltage monitor relay and push-to-Energize outputsA6 0.1 to 99 seconds timing rangeP Operating power derived from 125 Vdc or 100/120 VacN Notarget4 Non-isolated contact sensing inputR Line and Bus Voltage Mon.rtor; also a Voltage Difference Monitor w.rth cond.rtion switches

internal to the relay.o No auxiliary outputF Semi-flush mounting

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BE1-25

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#g#able Phosc 2 9 1702 06 lot a i7o2 o6 iio

None or the above ' 9 1702 06 105 91702 06111

SPECIFICATIONS

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Figure 1-4. Style Number Identification Chart

Voltage and Phase Sensing

Contact Sensing

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6) Power SupplyStotu! Output

F) Semi-Flush

p) #ouj,:itlgnMOun'lng

Nominally rated at 60 Hz with a range of 45 to 65 Hz at amaximum burden of 1 VA per phase to 125°/a of nominal voltage.Maximum continuous voltage rating is 160% Of nominal.

User-supplied contacts with a minimum rating of 0.05 A at 250 Vdcare required at all contact sensing inputs. (Specifically the 52binput, the optional expandable phase angle window, and theoptional external voltage condition switches.)

Sensing circuit current is supplied by the relay when isolatedsensing is selected. Non-isolated sensing requires an externallyapplied dc sensing voltage equal to the nominal voltage of therelay power supply input.

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BE1-25 Genei.al Information

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Burden

Power Supply

Output Conlacls

Target Indicator

RelayConflguratlon Burden A.ccordlng to Source of Operatlon Power

50Hz 60Hz 125 48 24 250 60Hz100 Vac 120 Vac Vdc Vdc Vdc Vdc 230 Vac

VVIthoutVO'tagoMonitol.

12VA 18VA 9W 9W 9W 12W 28VA

VvithVoltageMonitor

20VA 26VA 15W 15W 15W 21W 41VA

TypeNominal [npu(

Input VoltageVoltage Range

0 48 Vdc 24 to 60 Vdc

P 125 Vdc 62 to 150 Vdc120 Vdc 90 to 132 Vdc

tR 24 Vdc 12 to 32 Vdc

*T 250 Vdc 140 to 280 Vdc230 Vac 190 to 270 Vac

* External modules required for contact sensing wlien type T power

supply is specified.

t Type f] power supply may roquiro 14 Vdo to begin operating. Onceoperating, the voltage may bo reduced to 12 Vdc.

Output contacts are rated as follows:

Resistive120/240 Vac Make 30 A for 0.2 seconds, carry 7 A continuously,

and break 7 A.125/250 Vdc Make and carry 30 A for 0.2 seconds, carry 7 A

continuously, break 0.3 A.500 Vdc Make and carry 15 Afor o.2 seconds, carry 7 A

con(inuou§Iy, break 0,1 A.

InductiveiE6ZZ6Tvac, Break o.3 A, (L/P = o.o4).125/250 Vdc

Target indicators may be either internally operated or currentoperated (operated by a mlnimum of 0.2 A through the output trlpcircuit). When the target is current operated, the sync outputcircuit must be limited to 30 A for 1 Second, 7 A for 2 minutes,and 3 A continuously.

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Pr`ase Angle

Selection AccLiraey

Setpoint Accuracy

Timing Accuraey at 25oC

Time Delay AccuracyOverall

Minimum VoltageRequirement

Voltage Difference Option

Range

Accuracy

Line and Bus Voltage Monitor Option

Range

Accuracy

Isolation

Surge Witlistand Capability

± o.5° or ± 5.0% Of the front panel setting for degrees, whicheveris greater, for a nominal input frequency Of 50/60 Hz, a sensinginput range of 80 to 135 volts, and at 250C.

±o.5o or ±5%, whichever is greater, from a referencemeasurement at 25 °C, at nominal input frequency and levels, overthe specified operating range of temperature and input voltages.

MaD(imum of 25 msec or 5% of the front panel setting for timewhichever is greater, for a nominal Input frequency of 50/60 Hz at250C.

± 10 msec or ±2%, whichever is greater. ofthe time delay at 25°C, over the full temperature, voltage, andfrequency ranges.

Line and bus must be at 80 Vac, minimum, toenable a sync check operation.

Continuously adjustable over the range Of 1 to 135 Vac.

The voltage difference setpoint shall not vary more than 0.5 V or5% (whichever is greater) from a reference measurement at 25 °C,with nominal input frequency, and variation Of temperature orvoltage inputs over their spec.rfied operating range. This setpointshall not vary more than 3% from a reading at 25°C over thelimited range of +15 to +4ooC.

Continuously adjustable over the range of 10 to 135 Vac.

The line and bus voltage setpoints shall not vary more than 3%from a reference measurement at 25°C, with nominal inputfrequeney, and w.r[h temperature and voltage inputs within specifiedoperating range. Setpoints shall not vary more than 1°/o from areading at 25°C over the limited temperature range of +15 to+400C.

2500 Vac at 60 Hz for one minute (1500 Vac for one minute acrossopen contacts) in accordance with IEC 255-5 and ANsl/IEEEC37.90-1978 (Dielectric Test). Note that this device employsdecoupling capacitors to ground from pins 3. 4. and 6 through 9.Accordingly, a leakage current of 60 rnA (maximum) is to beexpected at these terminals.

Qualified to C37.90.1-19B9 and IEC 255-5.

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Temperature

Shock

Vibration

Case Size

Weight

Certification


ODeratirra Pane4ooC (4ooF) to 7ooC (158°F)

Stcmacle Ranaeusoc (usoF) to ioooc er2OFi

ln standard tests the relay has withstood 15 g in each Of threemutually perpendicular axes without structural clamage ordegradation Of performance.

In standard tests the relay has withstood 2 g in each Of threemutually perpendicular axes swept over the range Of 1o to 5oo Hzfor a total Of six sweeps, 15 minutes each sweep, without structuraldamage or degradation Of performance.

S1.

13.7 pounds maximum

UL Becognized under Standard 508, UL File #E97033 formaximum power supply voltages Of 125 Vde and 120 Vac. tl=owersuppifes 0, P, and EL)

11-9

a SECTION 2

CONTROLS AND INDICATORS

Table 2-1. BE1-25 Controls and Indicators (Refer to Figure 2-1_ and Figure 2-2).

Locator Control or Indicator Function

AaCDEF SYNC IndicatorTIMEDELAYSelectoi'POWERIndicatorTIMEDEIAYMulliplierSwitchAVIndicatorAVAdjustmentLLIndicatorLLAdjustment Fled LED is ON when an in-sync condition has been Ofsufficient duration to match the timer setting. Lightingthe LED coincides with closure of the SYNC contacts.The LED j§ OFF when 52b opens or the sync conditionceases.

Thumbwheel switches establish the time delay betweenthe sensing of desired sync condition and the closing ofthe SYNC contact. Time delay is in units of seconds orof cycles, according to the option selected.

Option A6: Setable in 1-second increments over a rangeof 01 to 99 seconds when multiplier switch (locator D) isin the X 1.0 position. Alternatively, the range is 0.1 to 9.9seconds with the multiplier switch in the x 0.1 position.

Option A7: Setable in one-cycle increments from 1 to 99eycles. The multiplier switch (locator D) is omitted.

A setting of 00 will Inhibit closing of the sync-checkOutput.

LED is ON when operating power is supplied to the relayinternal circuitry.

Explained above; see locator 8.RedLEDisONwhenthedifference between the bus and

the line voltage is less than the setting of the control.

The control setting is continuously adjustable from 10 to135 Vac. Adjustment is by small screwdriver through thefront panel. CW rotation increases the voltage differencesetting.

Red LED is ON when line voltage exceeds the referencevoltage established by its associated control.

The Live Line threshold is continuously adjustable from10 to 135 Vac. Adjustment is by small screwdriverthrough the front panel. CW rotation increases voltagesetting.

2-1

BE1-25 Controls and Indicators

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Figure 2-1. Location of Controls and Indicators

2-2

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aFigure 2-2. Locations Of Controls and Indicators

2-3

BET-25 Controls and Indicators

Table 2-1. BE1-25 Controls and Indicators -Continued


aH DL/ZrvlndicatorDL/Z5TVAdjustmentTargetResetLever When in the Normal Mode:The red LED is ON when the line voltage is less than thereference voltage established (by the front panel control)to define a dead line.

When in the Not-Overvoltaae /Ovl mode:TheLEDisONwhenthelinevoltagedoes not exceed

the reference voltage established by the adjacent controlto define an overvoltage condition.

The control setting is continuously adjustable over therange of 10 to 135 Vac. Adjustment is by smallscrewdriver through the front panel.CW rotation increases voltage setting.

AIlows manual reset of the target.

l&JKLMN PUSH-TO-ENERGIZE These pushbutton switches are accessible by inserting aOUTPUT SwitchesTargetIndicator(Optional)LBIndicatorLBAdjustmentVIndicatorDB/trL/IndicatorDB/ZrvAdjustment 1/8 inch diameter non-conducting rod through holes in

the front panel. Switch I, when actuated, closes theSYNC and (if spec.rfied) the auxiliary contacts; Switch Jcloses the (optional) VOLTage monitor contacts.

Magnetically latching indicator which indicates that theSYNC output relay is or was energized.

Fled LED is ON when bus voltage exceeds the referencevoltage established by the adjacent control. Thisindicates that a live bus condition is recognized by therelay.

This control defines the live bus threshold. It has anadjustment range of 10 to 135 Vac. Adjustment is bysmall screwdriver through the front panel. CW rotationincreases voltage setting.

Fled LED is ON whenever the (optional) Voltage Monitoroutput relay is energized.

The red LED is ON when bus voltage is less than thereference voltage established by the adjacent control.When in the normal mode, this indicated that a dead busis detected. But in not-overvoltage mode (OV). the LED(when ON) indicates that no overvoltage condition exists.

The setting is continuously adjustable over the range of10 to 135 volts. Adjustment is by small screwdriverthrough the front panel. CW rotation increases thevoltage setting.

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Control or Indicator Function

NOTEA PHASE ANGLE setting of 00 inhibits operation of the relay.

PHASE ANGLE Selector

PHASE ANGLE Indicator

Switchable jumper forEXPAND option

MODE Switch No. 1 (Bus)MODE Switcli No. 2 (Line)

CONDITION Switches

No. 1 (Not-OvervoltageEnable to the sync logiccircuilry)

Thumbwheel switches set the acceplable maximumphase difference between the line and bus voltages. Thisphase differerice windowr is adjustable in 1 a incrememsover a range Of ol to 99C'.

Red LED is ON when the phase angle is within the limitsestablished by the adjacent PHASE ANGLE Selector.

Position Of jumper controls the width Of the expandedphase angle window as a multiple Of the phase anglesetting. The two positions are X2 and X3.

For Both Mede Sw.riches:UP = Normal Model.

Down = Not-Overvohage Mode (OV).

When the line or bus sensing circuitry is operating in theNormal mode, two voltage boundaries (established byfront panel controls) are detected:(1) A hish threshold, above which the bus (or line, as the

case may be) is considered live;a) A low threshold, below which the bus (or line) isconsidered dead.

When in the Not-Overvoltage Mode (OV), the twovoltage boundaries (one high, one lowo are assigneddifferently:

(1) A voltage above the high threshold is consideredovervoltage.

(2) A voltage under the low threshold is defined as dead.@) A voltage bet\^/een the two thresholds is defined aslive. This condition is acknowledged by the iMuminationOf two LEDs: Not-Overvoltage (OV) and either LL or LB.

OFF (up) pos.rtion: Disables the Not-Overvoltage (OV)mode of operation during a live line/live bus condition.

ON (down) pos'rtion: AIIows the OV mode of operationto add a further constraint to the live line/live buscondition (assuming that the OV mode has beenpreviously selected on MODE switch No. 1 or No. 2).The additional constraint is the requirement that the lineand/or bus are not in the overvoltage region. IThisswitch does not affect the voltage monitor output relay.)

2-5




No. 2 (Live Line/Live Bus)'frela Up = OFF

Condition Switch No. 2, when ON (down), allows thevoltage monitor relay to be actuated when a ive line/livebus condition is recognized.

as OutDiit ODtion E or F:

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No. 3 (Dead Line/Live Bus) Up = OFF

No. 4 (Live Line/Dead Bus)No.5(DeadLine/DeadBus)

The ON (down) pos.rtion causes an immediate closthe SYNC output contact (for output option E or F), oran immediate actuation of the voltage monitor re ay (foroutput option G or H), 'rf a dead line/live bus condition isdetected with the breaker open.

Up = OFF

The ON (down) position caused an immediate closure ofthe SYNC output contact (for output option E or F), oran immediate actuation of the vo tage monitor re ay (foroutput option G or H), if a live line/dead bus condition isdetected with the breaker open.

Up = OFFTheON(down) pos.rtlon caused an immediate closure of

the SYNC output contact (for output option E or F) Or

an immediate actuation of the vo tage monitor relay (foroutput option G or H), if a dead line/dead bus conditionis detected with the breaker open.

2-6

a

a

a

a

a

a

SECTION 3

FUNCTIONAL DESCRIPTION

GENERAL

The BE1 -25 Sync-Check Relay ls a static digital device utilizing dig.rtal circuitry to provide a breakerclosure signal when the phase and voltage difference between line and blls are within preset limits. Thefunctional block diagram in Figure 3-1 Illustrates the overall operation of the sync-check relay.

FUNCTIONAL DESCF]lpTION

The following paragraphs describe the Sync-Check Relay circuit functions illustrated jn Figure 3-1.

Steprdown Transformers

Standard system transformer with 120 volt secondaries provide line and bus voltages to the senslngtransformer of the sync-check relay. The internal sensing transformers isolate the relay from the systemand step down the voltage to internal circuit levels.

Zero Cross and Phase Difference Measurement

The output voltages of the sensing transformers are digitized by zero cross detection circuits. Timedelay between the zero crosses is measured in the phase difference measurement circuitry to provide abinary output.

Comparator

The binary number representing phase difference is compared with the setting of the PHASE ANGLEthumbwheel switches. If the detected phase difference is less than the setting of the switches, the timedelay is started and the PHASE LED turned ON.

Timer

The time delay timer clock is controlled by the time delay multiplier switch on the front panel.

The timer is enabled by:

1. Phase angle less than the set limit.

2. Minimum line and bus voltages present.

3. 52b contact is closed.

4. Voltage difference (AY) is within set limits (if option selected).

5. A live-line and live-bus condition is present (if the voltage monitor option is selected).

When the time delay reaches the coun( entered by the TIME DELAY select switches, the SYNC output isenergized, the SYNC LED is turned ON, and the target (if selected) turns red. The SYNC LED is tunedOFF as soon as any Of the five above listed enables are remcIved. Generally this occurs when the circuitbreaker closes.

3-1

BE1-25 Functional Description

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3-2

a

a

a

0

a

BET-25 Functional Description

Minimum Voltage Detection

The minimum voltage detection circuitry enables the time delay timer when both llne and bus are withinoperating range of the relay. The enable will occur at or above 80 Vac.

Contact Sensing

Before any relay output can occur, there must be an initiating signal from external contacts. Contactsensing circuitry allows the relay to monitor circuit breaker status (52b) and various conditions selectedby the user. (Contact requirements are provided in Section 1).

In any sync-check relay, all of the contact sensing inputs supplied must use one Of two methods.

1. Isolated sensing (option 1-5), utilizes current supplied by the relay to monitor the isolatedcontacts.

2. Non-isolated sensing (option 14), monitors an external dc source whose nominal voltage isequal to the input to the relay power supply.

NOTElf the power supply Of the relay has an ac source, non-isolated sensing cannot be used.

Power Supply

Four available power supply types permit matching the required input voltage to an existing powersource. The power supply is a low burden, switching regulator type which delivers a nominal ± 12 Vdcto internal circuitry. The front panel POWEP LED (red) turns ON to lnclicate that the power supply isfunctioning.

Po`hrer Supply Status Output (Option 3-6)

The power supply status output relay has normally closed (NC) output contacts. "s relay is energizedupon powemup thus opening its contacts. Normal relay operating voltage maintains the power supplystatus output relay continually energized and ife outptlt contacts open. However, if the power supplyoutput voltage falls below the requirements for proper operation, the power supply status output relayde-energizes, thus closing the NC output contacts.

Vohage Monitor Options

The voltage monitor options are shown in the lower portion Of Figure 3-1, ancl described in the followingparagraphs.

EjJtsng

Input voltages from bus and line are filtered and applied to the peak detectors.

Peak Detectors.

The voltage difference IAV) peak detector measures the phasor voltage difference between line and bus,and compares thls difference against the setting Of the front panel AV control. If the detected differenceis less than the limit, the sync-check timer is enabled, and the front panel AV LED is turned ON.

3-3

BE1-25 Functional Description

Four additional peak detectors compare the sensed line and bus voltages with reference voltagesestablislled dy the front panel control settings. To illustrate operation, let us first consider the two upperpeak detectors, noting that they monitor the bus, and that one Of them has its output inverted.

When the live bus (LB) peak detector determines the sensed bus voltage is above the threshold voltage,it outputs a logic-high signal to the selection logic. But the DB/OV peak detector, because Of inversion,only pro\;ides a logie-high signal when sensed voltage is below the threshold, thereby identifying either adead bus (mode 1), or a not-ovel`/oltage condition (mode 2).

The lower pair Of peak detectors work in similar fashion to define llne conditions.

Voltaae Monitor Selecti_on Loaic.

The voltage monitor selection logic is controlled by mode and condition switches or external conditionswitches to produce the voltage monitor output.

Another output from the voltage monitor selection logic serves as an additional qualifier for the timer inthe sync output cirouit. The specific conditioris being monitored depends upon whether mode 1 ormode 2 operation is employed. Live line and live bus is monitored if mode 1 is selected. Li\re line, livebus, and Ovis monitored if mode 2 is selected.

Target Indicator (Optionary

When a target option is specified as either A or 8, a magnetically latched indicator is incorporated in thefront panel to indicate that a SYNC output has occurred. The target may be actuated by either Of twomethods (as defined by the style number and explained below).

Type A target (referred to as internally operated) is actuated by an integral driver circuit that respondsdirectly to the relay internal logic. This type Of target is tripped regardless Of the amount Of currentflowing through the output contact.

Type 8 target (referred to as current operated) is actuated when a minimum Of 02 A flows through theSYNC output contact. To accomplish this, a special reed relay ls placed in series with the contact tosignal the target indicator. (The series impedance Of the reed relay is less than 0.1 chin.)

Each target indicator is visible on the front panel Of the relay With the cover in place. When operated.tthe disc in the target changes from black to red and is magnetically latched in this position. To reset theforget after an abnormal system condition has been cleared, manually raise the target reset lever on thefront Of the relay (or its extension which protrudes through the bottom Of the front cover).

3-4

0.

a

a

a

a

SECTION 4

INSTALLATION

GENEF]AL

When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons toprevent damage during transit. Immediately upon receipt of a relay, check the model and style numberagainst the requis.rtion and packing list to see that they agree. Visually inspect the relay for damage thatmay have occurred during shipment. If there (s evidence of damage, immediately file a claim with thecarrier and notfty the Plegional Sales Office, or contact the Sales nepre§entative at Basler Electric,Highland, Illinois.

In the event the relay is not to be installed immediately, store the relay in its original shipping carton in amoisture and dust free environment. When relay is to be placed in service, it is recommended that theoperational test procedure (page 44) be performed prior to installation.

RELAY OPERATING PRECAUTIONS

Before installation or operation of the relay, note the following precautions:

1. A minimum of 0.2 A in the output circu.rt is required to ensure operation of current operatedtargets.

2. Do not touch target indicator vanes. Always reset targets by use of the target reset lever.

3. The relay is a solid-state device. If a wiring insulation test is required, remove the connectionplugs and withdraw the cradle from its case.

4. When the connection plugs are removed the relay is disc;onnected from the operating circuit andwill not provide system protection. Always be sLlre that external operating (mom.rtored)conditions are stable before removing a relay for inspection, test, or service.

5. Be Sure the relay case is hard wired to earth ground using the ground terminal on the rear of theunit. It is recommended to use a separate ground lead to the ground bus for each relay.

DIELECTRIC TEST

ln accordance with lEC 255-5 and ANsl/lEEE C37.90-1989, one-minute dielectric (high potential) testsup to 2500 Vac (45-65 Hz) may be performed except across open contacts, which may be tested up to1500 Vac. Note that this device employs decoupling capacitors to ground from terminals 3, 4,and 6through 9. Accordingly, a leakage current of 6.0 rnA (maximum) is to be expected.

MOUNTING

F]elay

Because the relay is Of solid state design, it does not have to be mounted vertically. Any convenientmounting angle may be chosen. F]elay outline dimensions and panel drilling diagrams are supplied atthe end of this section.

4-1

BE1-25 Installation

F]esistor Module

When the condition and mode switching of the voltage monitor option is controlled by external contacts(option 2-U or 2-V), a resistor module is bolted to the rear of the relay (Figure 4-11). If the relay is to beprojection mounted (Figure 4€), it will be necessary to first remove the module when mounting therelay, then reattach it so that the mounting panel lies between the relay and module.

In planning the installation, it is necessary to reserve a clear space directly behind the relay, or behindthe mounting panel if projection mounted, for the module which will give off some heat during use.

Contact Sensing Module

lf a type T power supply is used, an external contact sensing module is required. (See Figure 4-8.) lfexternal control of condition and mode switching is also specified, the power module described in theprevious paragraph must also be used in addition to the contact sensing module.

The ideal mounting position for the contact sensing module is w.rth the fins ver[ical (to facilitate upwardair movement). This module is best mounted as close to the relay as is conveniently possible in order totake full advantage of transient suppressors within the module.

Further installation information for the contact Sensing module is contained in Publication 91702 06 990,which is packed with the module.

CONNECTIONS

Incorrect wiring may result in damage to the relay. Be sure to check model and style number againstthe options listed in the style number identification chart before connecting and energizing a particularrelay.

NOTEBe Sure the relay case is hard-wired to earth ground with no smaller than 12 Awecopper wire attached to the ground terminal on the rear of the relay case. When therelay is configured in a system with other protective devices. it is recommended touse a separate lead to the ground bus from each relay.

Except as noted above, connections should be made with minimum wire size of 14 AWG. Typicalexternal connections are shown in Figures 4-7 through 4-10. Be sure to use the correct Input power forpower supply specified.

SWITCH SETTINGS

Setting Time Delay or Phase Angle

Figure 4-1 graphically relates time delay settings to phase angle settings in terms of slip frequency.

Condition and Mode Switches

When output contacts of both sync and voltage monitor functions are wired in parallel, the live line/livebus condition switch must be in OFF pos.rtion. Otherwise the sync function would be overruled. If thecondition switches are external (options 2-U and 2-V), the external LL-LB switch should be omitted whensync and voltage monitor contacts are in parallel.

4-2

a

0

BET-25 Installation

a

a

MAXIMUM SLIPF.REQUENCY IN HZ

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\ F§ I 2 X PIIASE ANGLE SETTING360 X TIMEmEREFs-slipFREouENcyiNHERTz.

FREQUENCY INCREASES Wl" A LARGER PHASEANGLE SETTING AND W" A SHORTER TIMEDELAY SETTING.\ \

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llllllll|-IE ,BE1-'058

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TIME DELAY IN SETTING (SECONDS)

Figure 4-1. Ivlaximum Slip Frequency Versus Time Delay and Phase Angle Settings

4-3

BE1-25 Installation

OPEFZAT[ONAL TEST PF]OCEDUFtE

The following procedure verifies operation of the relay. The test setup Of Figure 4-2 is intended primarilyas an illustration of the principles involved. Other test setups known to b.e capable of testing within thestated and implied tolerances (includlng equipment specifically designed for testing relays) may be used.

Preliminary Settings

(a) All contact sensing inputs are open circuited.

(b) All condition and mode switches are UP.

(c) Some styles Of relay are equipped with multlturn pots accessible through holes in the frontpanel. All such controls should be turned fully COW (to their minimum settings) except the AVcontrol, which is turned fully CW.

(d) Adjust bus and line sensing input voltages to 95 Vac with zero phase difference.

(e) Apply power to the relay.

(i) lf equipped with power supply status output (option 3€): verfty that the power supply statusoutput contacts are open.

(g) Pemove input power and verfty that the status contacts close.

(h) Apply power to the relay.

Test Procedure

NOTEA 0-0 setting of either control must Inhibit the sync-check function. .

lf target option 8 (current operated target) is present, check that targets operate atclosure of the sync contacts. (Plequires a minimum Of 0.2 A in the output circuit.)`

Step 1. Confirm proper sync-check operation at selected PHASE ANGLE settings with TIME DELAYset at minimum (for convenience). Check that go/no-go operation is vyithin specs.

NOTEWhen making this test, observe that the PHASE ANGLE LED is turned ON during thedelay period, and that the SYNC LED flashes when the output contacts close. (BothLEDs go out as soon as the 52b input is open.)

lf auxiliary contacts are supplied, check for proper switching action as relay cycles.

Step 2. With line and bus inputs in phase, check for proper operation of timer. using a time delay of9.9 seconds, and again at 99 Seconds (multiplier switch at 0.1 and at 1.0 respectively). (Closeand open the 52b input to begin and terminate the timing cycle.) Check that accuracy oftiming cycle is within specs.

4-4

BE1-25 Installation

BEI -25D'057-085-9-92

a

a

a

r_ CONTACT SENSING INPUTS

(SIMULATED BYILLUSTRATED SWITCHES)

IIH

Figure 4-2. Test setup (Typical)

4-5

BE1-25 Installation

Step 3. Check that operation of the sync function is inhibited during low voltage conditions of line orbus.

(a) Lower line and bus sensing input to 80 Vac and repeat Step 1. SYNC output should notbe inhibited.

(b) Lower the line sensing inputs to 30 Vac. Attempt Step 1. SYNC function ls inhibited andPHASE ANGLE LED Should not turn ON.

(c) Return the line input to 80 Vac and lower the bus input to 30 Vac. Attempt Step 1. Syncfunction is inhib.rted and PHASE ANGLE LED should not turn ON.

It is not necessary to determine the exact voltage threshold at which inhibition occurs in orderto confirm proper operation of this circu.rt.

NOTESteps 4 through 8 checl( for proper operation of line and bus voltage monitor (options2-B, 2-S, 2-U, or 2-Y). If these options are not present, proceed to step 7.

Step 4. Verfty that the voltage monitor controls operate over the specified range as follows.

(a) Rotate the LL and LB controls (front panel) fully CW; rotate the DL/07 and DB/tJVcontrols fully CCW.

(b) Adjust line and bus sensing inputs to 135 Vac.

(c) Slowly rotate the LL and LB controls CCW until LEDs turn ON. This should occur only afew turns from the maximum (fully CW) position.

(d) Adjust line and bus sensing inputs to 10 Vac.

(e) Rotate the LL and LB controls COW untll their indicators LEDs turn ON. This should occuronly a few turns from the minimum (fully COW) position.

(I) With input voltages remaining at 10 Vac, rotate the DL/OV and DB/t}V controls CW untiltheir LEDs just light. Both adjustments should require only a few turns from the minimum

(fully Cow) position.

(g) Return line and bus sensing inputs to 135 Vac. (Both LEDs of step (f) must now be OFF.)

(h) Again rotate the DL/OV and DB/OV controls CW until the LEDs just light. Bothadjustments should be near their maximum (fully CW) Iim.Its.

4-6

a

a

a

a

BET-25 lnslallation

Step 5. Test normal mode operation of the line and bus voltage monitor as follows. (Proceed to step6 if the normal mode is not used.)

(a) Adjust the following front panel controls by applying the voltages listed below, adjustingeach control to the threshold where its LED just lights. (Beference locator letters L, N, F,and G of Figure 2-1 .)

LB: Adjust to 80 Vac.DB/OV: Adjust to 30 Vac.LL: Adjust to 80 Vac.DL/OV: Adjustto 30 Vac.

(b) lf the relay is not equipped with a separate relay for voltage monitor (output options G andH), set TIME DELAY to 99 seconds. This allows the convenience of using in-phasevoltages for testing non-synchronous functions (without unwanted SYNC contactclosures).

(c) Apply simulated line and bus voltages, adjusted to check the bus and line voltage criteriagiven in the two rightmost columns of Table 4-1. To be valid, an output must occurimmediately after line and bus voltages are applied.

NOTEln some units, both the internal condition switches and the external condition sensinginputs are present and in parallel. Take care that only one input method is utilizedwhen testing the relay, and (most importantly) after the relay is installed.

Table 4-1. Normal Mode Testing

CONDITION MODE OUTPUT*Only When Input Voltages Are:

1 2 3 4 5 1 2 Bus Line57 LL-LB DL-LB LL-DB DL-DB Bus Line

Up Up Up Up Up Up Up No output throughout voltagerange.

Up Up Down Up Up Up Up >80V <30V

Up Up Up Down Up Up Up <30V >80V

Up Up Up Up Down Up Up <30V

Up Down UP Up Up Up Up > 80 V§

* Contact is SYNC output for output options E and F: voltage monitor output for output options G and

H.

§ The only valid use for the LB-LL condition (No. 2 switch down) can occur when there is anindependent output contact for the voltage monitor (output options G and H).

4-7

BE1-25 Installation

Step 6. Test the not-overvoltage mode of the voltage monitor as follows. (Proceed to step 7 if thismode is not used.)

(a) Adjust the following front panel controls by applying the voltages stated below, adjustingeach control to the threshold where its LED indicator just turns ON. (Peference locatorletters L, N, F, and G of Figure 2-1).

LB: Adjust to 80 Vac.DB/OV: Adjust to 120 Vac.LL: Adjust to 80 Vac.DL/OV: Adjustto 120 Vac.

(b) Set TIME DELAY to 99 seconds. This allows the convenience of using in-phase voltagesfor testing non-synchronous functions (without unwanted SYNC outputs).

(c) Apply simulated line and bus voltages adjusted to check the bus and line voltage criteriagiven in the two right-hand columns of Table 4-2. To be valid, an output must occurimmediately after line and bus voltages are applied.

Step 7. If the voltage difference option is furnished, check for proper enabling of the sync checkoutput contacts when the voltage differential between line and bus is within selected AVsettings.

Step 8. If the expand phase angle option is furnished, check that the phase window widens by a factorof 2 or 3 (according to the position of the jumper on the sync check PC board) when theexpand phase input terminal is closed.

4-8

a

a

BET-25 Installation

T[±9!±£i±J!!ot-OvervoltageMode-Testing

CONDITION MODEtOUTPUT*OnlyWhenInputVoltagesAre:

1 2 3 4 5 1 2Bus Line57 LL-LB DL-LB LL.DB DB-DL Bus Line

Up Up Up Up Up Down Down SYNC output when bus andlinevoltagesarebothlive.

Up Up Down Up Up Down Down >80V<120V <80V

Up Up Up Down Up Down Down <80V >80V<120V

Up Up Up Up Down Down Down <80V

Up Down§ UP Up Up Down Down > 80 V < 120 V

Down Up Up Up Up Down Down > 80 V < 120 V

Table 4-2

®

®

* Contact is SYNC output for output options E and F; voltage monitor output for output options G and

H.

t Placing both bus and line in mode 2 (switch down) does NOT imply that line and bus must operatein same mode. Any combination is permissible.

§ The only valid use for the LL-LB condition can occur when there is an independent output relay forthe voltage monitor output options a and H.

4-9

BE1-25 Installation

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Figure 4-3. Panel Drilling Diagram (Flush Mounting)

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Figure 44. Outline Dimensions (Flush Mounting)

4-10

a

BET-25 Installation

LO0KINC AT REAROF CASE

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Figure 4-5. Panel Drilling Diagram (Projection Mounting)

Figure 4-6. Outline Dimension (Projection Mounting)

4-11

NUMBEBS IN PAPENTHESES

INDICATE METPllc

DIMENSIONS

(MILUMETEF`S). ALL OTHEF}

DIMENSIONS APE IN

INCHES.

BET-25 Installation

/a,PN"p3NTSAL`

RESISTOR MODULE

NON-lsoLATED INPUTS

2525iFiT

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25 SyNC-CHECK RELAy25A2 S"C RELAY CONTACT

52CC BREAKER CLOSING COIL

52b BfiEAKER AuXILIARy CONTACT

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EXPAND OP110N AND AUxluARY RELAYARE MUTUALLY EXCLUSIVE

OPTIONAL VOLTAGE MONITOFi RELAY

Figure 4-7. Control Cirouit Connections ITypical)

4-12

a

BE1-25 Installation

LEGEND:

52b BREAKER AuxiiiARy CONTACTLL-L8 UVI LINE-UVE BUSLL-DB LIVE LINE-DEAD BllsOL-LE 0EA0 UNE-LIVE BUS0L-OB DEAD UNE-DEAD BUS

Figure 4-8. Contact Sensing and Resistor Modules(Only for relays with type T power supply)

LEGEND:

25 SYNC-CHECK RELAY

AeSHOWN LINE-TO-NEUTRAL. COULD ALSOBE WRED LINE-TO-LINE.

Figure 4-9. Voltage Sensing Connections

4-13

BE'-25D1058-072-'8-92

BE1-25 Installation

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Figure 4-10. Internal Dlagram

4-14

a

0

a

a

a

BE1-25 Installation

F]esistor Module

The resistor module shown in Figure 4-11 is required for BE1-25 Sync-Check relays, option 2-U or 2-V.

19 17 15 15 11

RESISTORMODULE

NOTE:

WHEN THE PELAY IS Pf`OJECTION

MOUNTED, (REF. FIGU13E 4€), THE

REsl§TOF` MODULE MuST BE PIEMOVED

PPlloPI TO INSTALIATION, THEN ATTACHED

TO THE RAR OF THE MOUNTING PANEL

AFTEPI THE PELAY HAS BEEN INSTALLED.

THE EXTEf]NAL CONTACT INPUTS AF`E

THEN WIRED TO THE BESISTOP MODULE

AT T82.

BE'-25D999-0053-10-92

Figure 4-11. Resistor Module Connections

4-15

a

a

0

a

a

a

SECTION 5

IVIAINTENANCE

GENERAL

BE1 -25 Sync-Check Pelay requires no prevent.rve maintenance other than a periodic operational test (referto Section 4 for operational test procedure). If the relay fails to function properly. and in-house repair i§contemplated, consult the Service Manual (publication number 91702 00 620). If factory repair is desired,contact the Customer Service Department of the Power Systems Group, Basler Electric, for a returnauthorization number prior to shipping.

IN-HOusE REPAm

ln-house replacement of individual components may be difficult and Should not be attempted unlessappropriate equipment and qualified personnel are available.

lf in-house repair is to be attempted, component values may be obtained from the schematics or the partslist of the Service Manual. Beplacement parts may be purchased locally. The quality of replacement partsmust be at least equal to that of the original components.

Where special components are involved, Basler Electric part numbers may be obtained from the numberstamped on the component or assembly, the schematic, or parts list. These parts may be ordered directlyfrom Basler Electric. When complete boards or a§semblies are needed, the following information is required.

1. Pelay model and style number

2. F`elay serial number

3. Board or assembly

a) Part nllmberb) Serial numberc) Plevision letter

4. The name of the board or assembly.

STORAGE

This protective relay contains aluminum electrolytic capacitors which generally have a life expectaney inex.cess of 10 years at storage temperatures less than 40°C. Typically, the life expectancy of the capacitoris cut in half for every 10°C rise in temperature. Storage life can be extended if, at one-year intervals, powerls applied to the relay for a period of thirty minutes.

5-1

BE1-25 Maintenance

TEST PLUG

The test plug (Basler P/N 10095) provides a quick, easy method of testing relays without removing themfrom their case. The test plug is simply substituted for the connection plug. This provides access to theexternal stud connections as well as to the internal circuitry.

The test plug consists of a black and red phenolic molding with twenty electrically separated contact fingersconnected to ten coaxial binding posts. The ten fingers on the black side are connected to the inner bindingposts (black thumb nuts) and tap into the relay internal circu.rtry. The ten fingers on the red side of the testplug are connected to the outer binding posts (red thumb nuts) and also connect to the relay caseterminals.

When testing circuits connected to the bottom set Of case terminals, the test plug is inserted with thenumbers 1 through 10 facing up. Similarly, when using the test plug in the upper part of the relay, thenumbers 11 through 20 are faceup. It is impossible, due to the construction Of the test plug, to insert it withthe wrong orientation.

TEST PLUG ADAPTEF{

Certain versions of the BE1 -25 relay have voltagerdropping resistors mounted externally on the back sideof the case (Plefer to Figure 4-11). Functionally, these resistors are part of the internal circuitry despite theirexternal location. Pelays equipped with external contacts for condition and mode switching (option 2-U or2-V) are in this category.

When using the test plug on these relays, compensating resistors must be added. The most convenientmethod is to use the test plug adapter shown in Figure 5-1 . This adapter is attached to the test plug beforeinserting the latter imo the upper jack of the relay. The correct adapter to use is given in Table 5-1 .

(Bc?:.uep¥:PT/,N::1:a:o,25A,?R (BASLER PA;NAP9TEiR7oi 1 1 xxx)

Figure 5-1. Adapter end Test Plug

5-2

BE'-79uD806-0126-2,-9'

BE1-25 Maintenance

0

a

a

If the correct Test Plug Adapter is not readily available, an alternative procedure is described at the end ofthis section.

Table 5-1. Test Adapter Requirements

Power Supply Type Test Adapter Part Number

24V None required48V 9170111101125V 9170111103230V 9170111105

Assembling Adapter to Test Plug

1 . Bemove top and bottom covers of Test Adapter by removing the 4 retaining screws.

2. Remove the ten black thumb nuts from test plug.

3. Note that the studs of the test plug may be entered into the ten matching holes of the adapter. Beforeassembling the test plug to the adapter, it is necessary to correctly orient the two units to each other byholding the black side of the test plug UP as it engages the adapter. IThe adapter itself is held top-side UP;i.e., front panel letters are upright.)

4. Pleplace the ten black thumb nuts. Firmly hand-tighten each thumb nut.

5. Replace top and bottom covers; replace the 4 retaining §crew§.

If Test Plug Adapter is Unavailable

lntheeventthattheproperadapterisnotonhand,atestsetupmaybeimprovisedbyinsertingtheproperresistors in series with terminals 12,13.16 and 17 as indicated in Figure 5-2.

TEST PLUGTE:RMINALS

D474-0052-'8-92

MOMENTARYSWITCHES

TO CONTACT SENSINGPOWER SOURCE THIS

I

I

'``,

lsoLATED SE:NSINC

(OPT,ON ,-5).

A g8rfeEsissoTgRCEFQulRED FOR 24v

POWER SUPPLY R1. R2, R4, R5VOLTAGE VALUE

48V 750, tow'25V 5K, low230V lox, 25W

Figure 5-2. Improvised Test Setup

5-3

®

®

e

SECTION 6

MANUAL CHANGE INFORivlAT[ON

Substantive clianges in this manual to date are slimmarized below.

Revision Summary of Changes

Added information to Figures 4-7, 4-8, and 4-9. Added storagerecommendation paragraph.

Added note to style Chart. Added footnote "t" to power supply table anddeleted the words nmake and" from inductive contact specification.Corrected and clarified phase angle specifications. Corrected typographicalerrors on Slip Frequency graph.

Revised manual to reflect introduction of power supply status option.

Added test plug/adapter informatlon. Added T82 terminal strip to connectiondiagrams.

Edited Sections 1 and 2 for clarification. Pevised Figure 4-2 and editedOperational Test Procedure.

Added new Figure 4-10, Internal Diagram and incorporated new instructionmanual format.

6-1

basler electric

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