3.20
Double Shot, Lockout ON, Live Line In, 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 providing the line
voltage is zero, the Block Instantaneous Protection LED and contact operates and 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. The relay will wait for the Dead time 1 setting to expire and issue a reclose pulse, if the
Protection Trip Contact and Circuit Breaker reset, the Block Instantaneous Protection
LED and contact are reset after the Reclaim time has expired and the relay drives to
Lockout.
3. If the Protection Trip Contact and Circuit Breaker have not reset the relay will wait for the
Dead time 2 setting to expire and the relay will issue a second reclose pulse, the counter
will increment one count. If the Circuit Breaker and Protection Trip Contact have not reset
after the second pulse, the Block Instantaneous Protection LED and contact are reset and
the relay drives to Lockout.
4. If the Protection Trip Contact and Circuit Breaker have reset after the second pulse the
Block Instantaneous Protection LED and contact are reset and the relay waits for the
Reclaim time to expire then resets ready for the next operation.
5. The Lockout indication and contact has to be reset from the front panel of
the relay.
6. Refer to flowchart 1B230B-20-100
Visit
www.rmspl.com.au
for the latest product information.
Due to RMS continuous product improvement policy this information is subject to change without notice. 1B230_Guide/Iss E/25/08/08