3.9
Double Shot, Auto Reset, Live Line Out, Block Instantaneous after 1
st
Trip
With the switch setting depicted above the relay will go through the following operations.
1. Once the breaker has tripped and the Protection trip contact has closed the Block
Instantaneous Protection LED and contact operates and the A/R in progress LED will flash
and the A/R contact will close. The relay will wait for the setting of Dead Time 1 to expire, it will
then issue a reclose output pulse, the counter will increment one count and the A/R in
progress LED will become steady.
2. If the Protection Trip Contact and Circuit Breaker did not reset the relay will wait for Dead time
2 to expire and then issue another Reclose Pulse, the counter will increment one count. If the
Circuit Breaker and Protection Trip Contact reset after this second pulse the Block
Instantaneous Protection LED and contact are reset after the Reclaim time has expired and
the relay resets ready for the next operation.
3. If the Protection Trip Contact and Circuit Breaker did not reset after the second pulse the Block
Instantaneous Protection LED and contact are reset and the relay drives to Lockout.
4. The Lockout indication and contact has to be reset from the front panel of the relay.
5. Refer to flowchart 1B230B-9-100
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Due to RMS continuous product improvement policy this information is subject to change without notice. 1B230_Guide/Iss E/25/08/08