3.18
Double Shot, Lockout ON, Live Line In, Block Instantaneous after 2
nd
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, providing the line
voltage is zero the A/R in progress LED will flash and the A/R contact will close, if the line
voltage is not zero the relay will wait in the reset state until it is, it will then wait for the setting of
Dead Time 1 to expire, 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 have both reset the relay waits for the
Reclaim time to expire then drives to Lockout.
3. If the Protection Trip Contact and Circuit Breaker have not reset the Block Instantaneous
Protection LED and contact operate. The relay waits for Dead time 2 to expire then
issues another Reclose pulse, the counter will increment one count. If the Protection Trip
Contact and Circuit Breaker have not reset the Block Instantaneous Protection LED and
contact are reset and the relay drives to Lockout.
4. If both the Protection Trip Contact and Circuit Breaker have reset the relay waits for the
Reclaim time to expire then resets the Block Instantaneous Protection LED and contact
and then drives to Lockout.
5. The Lockout indication and contact has to be reset from the front panel of the relay
6. Refer flowchart 1B230B-18-100.
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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
