17-
70
750/760 Feeder Management Relay GE Power Management
17.9 CONTROL SCHEMES 17 COMMISSIONING
17
17.9.8 AUTORECLOSE (760 ONLY)
Test connections per the figure below:
Figure 17–6: AUTORECLOSE TEST CONNECTION
For these tests output relay 7 Auxiliary is programmed to operate when the relay trips, to stop
the timer. If this is inconvenient, use any other output auxiliary relay.
Overall Operation:
1. Check that the relay is in the local control mode, and the LOCAL indicator is on. Open and close the
breaker by pressing the relay BREAKER OPEN and BREAKER CLOSE pushbuttons. Check that the
BREAKER OPEN and BREAKER CLOSED indicators are correctly displaying the state of the breaker.
Leave the breaker open.
2. Check that indicator RECLOSURE ENABLED is lit and that RECLOSURE DISABLED is off.
3. Close the breaker by pressing the BREAKER CLOSE pushbutton. The RECLOSURE ENABLED indicator
should go out, and the RECLOSURE DISABLED indicator should come on during the ‘AR block time upon
manual close’. Immediately after this interval, check that indicator RECLOSURE ENABLED is on, and the
RECLOSURE IN PROGRESS and RECLOSURE DISABLED indicators are off. Any output relays pro-
grammed to operate for Reclose Enabled should now be operated.
4. Check the interval of the ‘AR block time upon manual close’ by observing the RECLOSURE ENABLED
LED.
750/760
Ia
Ib
Ia
Ib
POWER
MULTIMETER
VARIABLE
CURRENT
SOURCE
±
±
±
±
Ic
Ic
±
±
BUS
G7
H7
Ia
G8
H8
Ib
G9
H9
Ic
BREAKER
CLOSE
TRIP
1 TRIP
2 CLOSE
52a/52b
CONTROL
POWER
(+)
(-)
POWER
MULTIMETER
INITIATE RECLOSURE
LOGIC e
LOGIC f
PB1
SW8
SW7
SW9
SW10
818790A9.CDR
E11
F10
STOP
TEST
TRIGGER
30
DYNAMIC
TEST SET
7 AUX.
H12
H11
G11
G12
E3
F3
E2
F2
C10
C11
NOTE
To Next Page
Loading...
Need help?
General
