NR Electric PCS-9611, Instruction Manual

Page: 288 / 300

12 Commissioning
PCS-9611 Feeder Relay
12-16
Date: 2014-04-08
5. After the period of [50PSOTF.t_Op], the SOTF overcurrent protection will operate and issue
the trip command. The “
TRIP
” LED indicator will be on; a relevant report will be shown on the
LCD.
12.5.3.15 Breaker Failure Protection Check
This check, performed the breaker failure protection function in the No.1 setting group,
demonstrates that the relay is operating correctly at the application-specific settings.
There are many protective elements can initiate the breaker failure protection. Here, all the check
is based on the assumption that the stage 1 overcurrent protection is operated.
1. Enable the stage 1 breaker failure protection and the stage 1 overcurrent protection.

Set the logic setting [50/51P1.En
] as “1” in the submenu “
OC Settings
”.

Set the logic setting [50/51P1.En_VCE
] as “1” in the submenu “
OC Settings
”.

Set the setting [50/51P1.Opt_Dir
] as “1” in the submenu “
OC Settings
”.

Set the setting [50/51P1.OutMap
] as “0x0001” in the submenu “
OC Settings
”.
 Set other logic settings as “0” in the submenu “
OC Settings
”.

Set the logic setting [50BF.En
] as “1” in the submenu “
BFP Settings
”.

Set the logic setting [50BF.En_ReTrp
] as “1” in the submenu “
BFP Settings
”.

Set the setting [50BF.Opt_LogicMode
] as “0” in the submenu “
BFP Settings
”.

Set the setting [50BF.OutMap
] as “0x0004” in the submenu “
BFP Settings
”.
 Set other logic settings as “0” in the submenu “
BFP Settings
”.
2. De-energize all the binary inputs of this relay.
3. Simulate a normal condition with normal currents and the circuit breaker is closed.
4. Make the stage 1 overcurrent protection operate according the method which is described in
Section 12.5.3.2 .
5. Make the fault phase current is greater than 1.05 × [50BF.I_Set] and the circuit breaker is
closed.
6. After the period of [50BF.t_ReTrp], the breaker failure protection will operate and issue the
re-trip command; and after the period of [50BF.t_Op], the breaker failure protection will
operate and issue the trip command.
The “
TRIP
” LED indicator will be on; a relevant report
will be shown on the LCD.
7. After the fault is disappeared, this relay will restore the breaker failure protection automatically.
Restore the “
TRIP
” indicator and the LCD manually.
12.5.3.16 Mechanical Protection Check
This check, performed the No.1 mechanical protection function in the No.1 setting group,