NR Electric PCS-9611, Instruction Manual

Page: 286 / 300

12 Commissioning
PCS-9611 Feeder Relay
12-14
Date: 2014-04-08
 Set other logic settings as “0” in the submenu “
NegOV Settings
”.
2. De-energize all the binary inputs of this relay.
3. Simulate a normal condition; the negative sequence voltage is less than 0.95 × [59Q.U2_Set].
4. Simulate an unbalance fault; the negative sequence voltage is greater than 1.05 ×
[59Q.U2_Set].
5. After the period of [59Q.t_Op], the negative sequence overvoltage protection will operate and
issue the trip command. The “
TRIP
” LED indicator will be on; a relevant report will be shown
on the LCD.
6. After the fault is disappeared, this relay will restore the negative sequence overvoltage
protection automatically. Restore the “
TRIP
” indicator and the LCD manually.
12.5.3.12 Broken Conductor Protection Check
This check, performed the broken conductor protection function in the No.1 setting group,
demonstrates that the relay is operating correctly at the application-specific settings.
1. Enable the broken conductor protection.

Set the logic setting [50BC.En
] as “1” in the submenu “
BrknCond Settings
”.

Set the setting [50BC.OutMap
] as “0x0001” in the submenu “
BrknCond Settings
”.
 Set other logic settings as “0” in the submenu “
BrknCond Settings
”.
2. De-energize all the binary inputs of this relay.
3. Simulate a normal condition with normal currents.
4. Simulate a broken conductor condition; the ratio I2/I1 is greater than 1.05 × [50BC.I2/I1_Set].
5. After the period of [50BC.t_Op], the broken conductor protection will operate and issue the trip
command. The “
TRIP
” LED indicator will be on; a relevant report will be shown on the LCD.
6. After the fault is disappeared, this relay will restore the broken conductor protection
automatically. Restore the “
TRIP
” indicator and the LCD manually.
12.5.3.13 Auto-recloser Check
This check, performed the auto-reclosing with synchronism check function in No.1 setting group,
demonstrates that the relay is operating correctly at the application-specific settings.
There are many protective elements can make the auto-recloser operate. Here, all the check is
based on the assumption that the stage 1 overcurrent protection is operated.
1. Enable the stage 1 overcurrent protection and auto-recloser of this relay.

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
”.