GE Lockout Relay HEA Manual

7/27/2019 GE Lockout Relay HEA Manual

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GE M ultilin 1

HEAHEAMulticontact Auxiliary

High-speed multicontact relays to

perform auxiliary functions on AC and

DC circuits.

Features and Benefits

I Electrically separate outputs available

I Various shaft lengths available

I Locks equipment out of service

Applications

I Contact multiplication

Protection and Control

I Trip and/or block close breaker control


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HEA M ulticonta ct A uxi liaer

ApplicationHEA high-speed multicontactauxiliary relays are applicablewhere it is desired that a numberof operations be performed

simultaneously from the opera-tion of a single relay.

Typical functions that can beperformed by these relays are:

1. trip the main circuit breaker of asystem

2. trip station auxiliary breakers

3. trip main or auxiliary field break-ers

4. trip and lock out all breakers on abus

Perhaps the most important useof the HEA relay is in conjunctionwith differential relays whichprotect transformers, rotatingapparatus, buses, etc.

CONSTRUCTIONThe HEA multicontact, hand-resetauxiliary relays are built withmany parts common to the well-known Type SB-1 control andtransfer switches.

The mechanical target on theescutcheon plate assembly indi-cates the position of the relay.

The black target indicates thereset position and the orangetarget, the tripped position. Toreset the relay after beingtripped, the handle is turnedclockwise as indicated by thearrow on the escutcheon plate.

Since the HEA relay is basicallysimilar to the SB-1 switch, it isavailable with a shaft longenough to allow it to be mountedon panels with a thickness offrom 1/8 inch to 2 inches thick, inincrements of 1/16 inch.

Like the SB-1 switch, all HEArelays must be ordered for thespecific panel thickness, other-wise the relay will be suppliedwith a shaft long enough to bemounted only on a 1/8 inch panel.

EXAMPLE: HEA61A222 for 3/4inch panel relay number wouldbe HEA61A222X12 (3/4 inch =12/16 =________________ X12).

EXAMPLE: HEA63F272 for 1 1/2inch panel relay number wouldbe HEA6313272X24 (1-1/2 inch =24/16 =________________ X24).

HEA61, HEA6 2, andHEA63

Operation

The operating shaft is held in thereset position by a positive rollerlatch which is especiallyconstructed to resist shock aridvibration. It is released throughthe action of the operating coil, inattracting a hinged element.

All HEA relays are made so thatthey should not normally be

tripped manually, although it ispossible by removing the rearcover and releasing the hinged-armature element.

Special Mounting

HEA61A, 61B, 61C, 62C, 63C and63G relays can be supplied with abevel-gear drive which allows therelay to be mounted in locationswhere normally the depth is notsufficient. The relays can bemounted like the standard butthe bevel-gear drive changes the

direction by 90 of that portion of

the relay that is behind the panel.The bevel-gear drive is availableto change the direction up, down,left, or right.

To select the proper modelnumber of the special relay,

select the number of the standardrelay desired (example:HEA61C230X2). If a right angledrive upward is desired, add theletters Right-angle Up to thestandard model number. Hence,the model number would beHEA61CRU230X2 (for 1/8 inchpanel).

Contact Ratings

The current-closing rating of thecontacts is 50 A for voltages notexceeding 600 V. The contactshave a current-carrying capacityof 20 A continuously or 50 A forone minute. The interrupting abil-ity of the contacts varies with theinductance of the circuit. Thevalues (in amperes) given in Table1, for DC inductive circuits, arebased on the average trip coil.

Burdens

The burdens for the Type HEArelays are given in Table 2.

Table 1. Contact interrupting ratings

CircuitVolts

Amps Noninductive CircuitsNumber of Contacts

Amps Inductive CircuitNumber of Contacts

1 2 in Series 4 in Series 1 2 in Series 4 in Series24 DC 6.0 30.0 - - - - 4.0 20.0 30.0

48 DC 5.0 25.0 40.0 3.0 15.0 25.0

125 DC 2.5 11.0 25.0 2.0 6.25 9.5

250 DC 0.75 2.0 8.0 0.7 1.75 6.5

600 DC 0.25 0.45 1.35 0.15 0.35 1.25

115 AC 40.0 50.0 - - - - 24.0 50.0 - - - -

230 AC 25.0 50.0 - - - - 12.0 25.0 40.0

460 AC 12.0 25.0 - - - - 5.0 12.0 20.0

550 AC 6.0 12.0 - - - - 4.0 10.0 15.0


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HEA6 1 Hand Reset

Application

The HEA61 relay is a hand-resethigh speed auxiliary relay. Whenit is used in conjunction withdifferential relays which areprotecting transformers, rotatingmachines, buses, etc., it ispreferred that the auxiliary relaybe hand reset to prevent acciden-tal reclosing of breakers when aninternal fault has caused thedifferential relay to operate.

Operation

The HEA61 relay is available with6, 10, or 16 main electrically sepa-rate contacts. In addition, there

are 2 normally closed contactsthat are wired for opening theoperating coil circuit. See Figure2.

Fig. 2. Typical HEA61B relay contactarrangement

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HEA M ulticonta ct A uxi l iary

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The time required to tri p therelay, from the instant of ener-gization of the coil to the closingof the contacts, is approximately15 ms (1 cycle on 60 Hz basis) slightly less for opening of thecontacts. See Figure 3.

Fig. 3. Typical time-voltage characteristics ofType HEA61 relay

NOTE: When viewed from thehandle end of the relay, the oddcontacts are on the right-handside and the even contacts areon the left-hand side starting atthe handle end and proceedingto the rear of the relay. Normally,the open contacts are the firstcontacts (nearest the handle) onthe relay, in the reset position.

Example: HEA61B233 rated 125VDC3 NO (contact numbers 1, 2, and3)7 NC (contact numbers 4, 5, 6, 7,8, 9, 10)

HEA6 2 Hand ResetThe HEA62 relay is identical tothe HEA61 with the exceptionthat on the HEA62 there is adiode-resistor combination insert-

ed across the coil circuit. See Fig.4. This diode-resistor suppressesthe surge sometimes caused bythe interruption of the coilcontacts on a DC circuit.

Fig. 4. Typical HEA62A relay contactarrangement

The diode-resistor combination ismounted on a small board that ismechanically attached beneaththe trip coil frame.

Although in most cases thisdiode-resistor combination isunnecessary, it is offered forthose unusual conditions wherethe user might feel it necessary.The HEA62 is available only inthe 62A, 62B, and 62C DC series.

HANDLE END OF SWITCH

BOTTOM CONNS.

TOP CONNS.

1 1C 2C 2

3 3C 4C 4

5 5C 6C 6

7 7C 8C 8

9 9C 10C 10

11 12

13

INTERNAL CONNECTIONS

NOTE - CONTACTS 11 & 12SHOWN IN RESETPOSITION.

Table 2. Burden data of trip coil

IntermittentRatingVolts

FrequencyCoil Resis.Ohms at

25C

AC CoilCurrentAmps at

(Rated Volts)

OperatingRangeVolts

Rating of ProtectiveRelay Target Coil Amps

24 DC 1.2 - - - - 14-30 2.0 1.0

48 DC 4.5 - - - - 28-60 2.0 1.0

125 DC 23 - - - - 70-140 0.2 1.0

250 DC 103 - - - - 140-280 0.2 0.2

115 50/60 Hz - - - - 25 95-125 2.0 - - - -

230 50/60 Hz - - - - 14 190-250 2.0 - - - -

460 50/60 Hz - - - - 7 380-500 2.0 - - - -

UniversalTargetSeal-in

SeparateTarget andSeal-in

30

28

26

24

22

20

18

48 voltrating

24 volt rating

Milliseconds

125 and250 voltrating

Type HEA 61 relayTime to closeNormally openContacts atVarious voltages

Ratedvoltage

16

14

12

101224

1228

1632

1836

2040

2244

60120

70140

80160

90180

100200

110220

120240

130260

140280

150300

2448

2652

2856

Volts DC


BOTTON CONNS.

TOP CONNS.

1 1C 2C 2

3 3C 4C 4

5 5C 6C 6

7 8

9 10

INTERNAL CONNECTIONS

NOTE - CONTACTS 7 & 8 SHOWNIN RESET POSITION.

J UMPER


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Fig. 6. Typical HEA63B contact arrangement

Rating(Volts)

Rotary SolenoidCoil Current (Amps)

24

48

125

250

26.8

13.5

5.5

2.8

4

HEA63 Hand andElectric Reset

Application

The HEA63 relay is basically a

standard HEA61 except it has arotary solenoid which is used toelectrically reset the relay andthere are only certain contactsequences available (seeSelection Guide). This relay isespecially useful where the oper-ator and the HEA63 relay aresome distance apart.

Operation

The operation of the relay may beunderstood by referring to Fig. 5.When electrical resetting is

desired, a contact or switch isclosed which completes theHGA33 relay (which is a part ofthe overall HEA63 relay and issupplied automatically with therelay) coil circuit through acontact of the HEA relay. Thiscontact is closed in the trip posi-tion. Closure of the HGA33contacts energizes the rotarysolenoid which imparts enoughrotational force to the HEA shaftthrough a coupling to cause theHEA to reset and latch. When the

HEA resets, the contact whichenergized the HGA33 coil opensand de-energizes the HGA33relay. This HGA is of the timedelay drop out variety withapproximately 0.25 sec drop outtime. The time delay insures thatthe HEA has fully latched. Thecontacts of the HGA33 then inter-rupt the rotary solenoid operatingcurrent. The HGA33 contacts havea high interrupting rating which isrequired because the rotary sole-noid current is of a relatively highinductive magnitude.

Fig. 5. Typical schematic of HEA63 relay

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HEA M ulticonta ct A uxi liaer

ROTARY

SOLENOID

4

3

2

1

1RESET

POSITION

RESETMECHANISM

HEA

HANDLE END

HGA33

HGA33

+

( - )

(+)125V DC


BOTTOM CONNS.

TOP CONNS.

2C 2

3 3C 4C 4

5 5C 6C 6

7 7C 8C 8

9 9C 10C 10

11 12

13

HEA INTERNAL CONNECTIONS

NOTE - CONTACTS 11 & 12SHOWN IN RESETPOSITION.


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GE Lockout Relay HEA Manual

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