GE 750 Instruction Manual page 412

CONTROL SCHEMES
7.6.8 Autoreclose
(760 only)
Note
NOTE
7 - 84
 Inject a current into the phase current input of the Incomer 2 relay.
 Slowly increase this current until the Phase IOC 1 element operates.
At the Incomer 2 relay the Transfer Not Ready message should be
displayed.
 Slowly decrease the injected current until the Phase IOC 1 element
resets.
At the Incomer 2 relay after the delay time of setpoint Transfer Delay
This Source and the Transfer Not Ready message should be removed
from the display.
 Enable the Neutral IOC 1 feature and Disable the Phase IOC 1 feature.
 Inject a current into the phase current input of the Incomer 2 relay.
 Slowly increase this current until the Neutral IOC 1 element operates.
At the Incomer 2 relay the Transfer Not Ready message should be
displayed.
 Slowly decrease the injected current until the Neutral IOC 1 element
resets.
At the Incomer 2 relay after the delay time of setpoint
THIS SOURCE
from the display.
For autoreclose testing, make the test connections specified in FIGURE 7–6: Autoreclose
Test Connections below.
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.
The following procedure tests overall operation of the Autoreclose feature:
 Check that the relay is in the local control mode, and the Local LED is
on.
 Open and close the breaker by pressing the
 Check that the Breaker Open and Breaker Closed LEDs are correctly
displaying the state of the breaker.
Leave the breaker open.
 Check that Reclosure Enabled LED is lit and the Reclosure Disabled
LED is off.
 Close the breaker by pressing the
The Reclosure Enabled LED should go out, and the Reclosure Disabled
LED should come on during the
value.
 Immediately after this interval, check that Reclosure Enabled LED is
on, and the Reclosure in Progress and Reclosure Disabled LEDs are off.
Any output relays programmed to operate for "Reclose Enabled" should
now be operated.
CHAPTER 7: COMMISSIONING
and the Transfer Not Ready message should be removed
CLOSE
AR BLOCK TIME UPON MANUAL CLOSE
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
TRANSFER DELAY
and keys.
OPEN CLOSE
key.