Broken Conductor Protection Settings - NR Electric PCS-9611 Instruction Manual

7 Settings
No. Menu text
1 50BF.I_Set
2 50BF.t_Op
3 50BF.t_ReTrp
4 50BF.Opt_LogicMode
5 50BF.En
6 50BF.En_ReTrp
7 50BF.OutMap
8 50BF.OutMap_ReTrp
NOTE!
1. The setting [50BF.Opt_LogicMode] is used to select the criteria logic of the breaker failure
protection. Four criteria logics based on the phase currents and the circuit breaker state
(based on the binary input [BI_52b]) are supported in this relay.
The two criteria conditions are list as below:
(A) The maximum phase current is greater than the setting [50BF.I_Set].
(B) The circuit breaker is still closed ([BI_52b] = 0).
Setting Value
1
2
3
4

7.3.6 Broken Conductor Protection Settings

The broken conductor protection settings (in the submenu "BrknCond Settings") are used to
determine the characteristic of the broken conductor protection.
All the settings of the broken conductor protection are listed in the following table.
No. Menu text
1 50BC.I2/I1_Set
2 50BC.t_Op
7-14
Explanation
The current s etting of the breaker failure
protection
The time setting of the breaker failure protection
The re-trip time setting of the breaker failure
protection
The setting for selecting the criteria logic of the
breaker failure protection
The logic setting of the breaker failure protection
The logic setting of the re-trip function of the
breaker failure protection
The output matrix setting of the breaker failure
protection
The output matrix setting of the re-trip function of
the breaker failure protection
Criteria Condition Logic
Ipmax > [50BF.I_Set]
NOT([BI_52b])
(Ipmax > [50BF.I_Set]) OR (NOT([BI_52b]))
(Ipmax > [50BF.I_Set]) AND (NOT([BI_52b]))
Explanation
The ratio setting for the broken conductor
protection
The time setting for the broken conductor
protection
Date: 2014-04-08
Range Step
0.05In~5.0In 0.001A
0~100s 0.001s
0~100s 0.001s
1~4 1
0~1 1
0~1 1
0x00000 ~
1
0xFFFFF
0x00000 ~
1
0xFFFFF
Only A
Only B
A OR B
A AND B
Range Step
0.10~1.00 0.001
0~200s 0.001s
PCS-9611 Feeder Relay