To Next Page

To Previous Page

GE Multilin 750/760 Feeder Management Relay 8-53

8 COMMISSIONING TESTS 8.6 CONTROL SCHEMES

Figure 8–6: AUTORECLOSE TEST CONNECTIONS

6. Assert a Cancel Reclosure logic input. The Reclosure Enabled LED should go out and the Reclosure Disabled LED

come on. De-assert the Cancel Reclosure logic input. The Reclosure Enabled LED should come on and the Reclosure

Disabled LED should go out.

7. Verify that the A1 STATUS ÖØ AR Ö AR SHOT NUMBER IN EFFECT value is “0”.

8. Momentarily assert the Initiate Reclosure logic input. The Reclosure In Progress LED should come on immediately,

and any output relays programmed to operate for Reclose In Progress should now be operated. After the delay pro-

grammed for

INCOMPLETED SEQUENCE TIME, the Reclosure In Progress LED will go out, as the breaker has not tripped,

and the incomplete sequence timer has canceled the reclose in progress. Any output relays operated above should

now be reset. Check the interval of the incomplete sequence timer by observing the Reclosure In Progress LED.

9. Momentarily assert the Initiate Reclosure logic input causing a reclose in progress indication. Immediately assert the

Block Reclosure logic input and the scheme should become disabled, canceling the reclose in progress. Assert the Ini-

tiate Reclosure logic input and check that the scheme does not become in progress. De-assert the Block Reclosure

logic input and the scheme should become in progress.

10. Assert a Cancel Reclosure logic input and the scheme should become disabled, canceling the reclose in progress. De-

assert the Cancel Reclosure logic input and the scheme should become enabled.

11. Assert the Initiate Reclosure logic input then immediately after assert the Remote Open logic input, initiating a reclose

and tripping the breaker (the Reclosure In Progress LED is now on). Verify that the

AR SHOT NUMBER IN EFFECT value

is “0”. Before the programmed dead-time interval for Reclosure 1 has elapsed, press the key. The breaker

should not close, as reclose is in progress. The breaker should reclose at the end of the dead-time interval, increment-

ing the shot counter to 1. Before the scheme resets, verify that the

A1 STATUS ÖØ AR ÖØ AR SHOTS REMAINING value is

the number of shots programmed less one. This reading should change to the number of shots programmed when the

scheme is automatically reset at the end of the reset interval. The event recorder should have recorded logic input Ini-

tiate Reclosure, Remote Open, the Reclose, and Reclosure Reset. Check the interval of the autoreclose reset timer in

the event recorder.

750/760

POWER

MULTIMETER

VARIABLE

CURRENT

SOURCE

BUS

BREAKER

TRIP

1 TRIP

2CLOSE

52a/52b

CONTROL

POWER

(+)

(-)

POWER

MULTIMETER

INITIATE RECLOSURE

LOGIC e

LOGIC f

PB1

SW8

SW7

SW9

SW10

818790A8.CDR

E11

F10

STOP

TEST

TRIGGER

DYNAMIC

TEST SET

7 AUX.

H12

H11

G11

G12

C10

C11

Courtesy of NationalSwitchgear.com

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English

GE Feeder Management Relay 750 User Manual

Table of Contents

Questions and Answers:

GE Feeder Management Relay 750 Specifications

Related product manuals