GE 750 Instruction Manual page 314

750/760
Feeder Management Relay
7–60
STOP
TEST
TRIGGER
30
VARIABLE
CURRENT
SOURCE
±
Ia
±
Ib
±
Ic
DYNAMIC
POWER POWER
TEST SET MULTIMETER MULTIMETER
INITIATE RECLOSURE
FIGURE 7–6: 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
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
programmed for
INCOMPLETE SEQUENCE TIME
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
Initiate 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
value is "0". Before the programmed dead-time interval for Reclosure 1 has
elapsed, press the CLOSE key. The breaker should not close, as reclose is in
progress. The breaker should reclose at the end of the dead-time interval,
incrementing the shot counter to 1. Before the scheme resets, verify that the
STATUS AR AR SHOTS REMAINING
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
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E11
7 AUX.
F10
G7
Ia
H7
±
G8
Ia
Ib
±
H8 750/760
Ib
±
Ic G9
Ic
H9
PB1
LOGIC e
SW7
LOGIC f
SW8
AR AR SHOT NUMBER IN EFFECT
, the Reclosure In Progress LED will
value is the number of shots programmed
Control Schemes
(+)
H12
CONTROL
(-)
POWER H11
G11
G12
BUS
C10
C11
BREAKER
SW10
E3
CLOSE
2 CLOSE
F3
SW9
E2
TRIP
1 TRIP
F2
52a/52b
818790A8.CDR
value is "0".
AR SHOT NUMBER IN EFFECT
GE Multilin
A1