Pcs-9611 Feeder Relay 7-A - NR Electric PCS-9611 Instruction Manual

18 25A.t_Wait
19 25A.Opt_DdChk
20 25A.t_DdChk
21 25A.t_SynChk
NOTE!
1. The settings [25.U_Comp] and [25.phi_Comp] are used to compensate the synchro-check
voltage, and make the compensated synchro-check voltage is equal to the corresponding
protection voltage in normal operation situation.
The settings [25.U_Comp] and [25.phi_Comp] can be set according to following formula.
In general application, the setting [25.U_Comp] is set as "1.000", and the setting
[25.phi_Comp] is set as "0° ".
For example, the synchro-check voltage and the protection are gotten from different sides of
a power transformer respectively.
a) Synchro-check VT: 400kV Primary, 110V Secondary
b) Protection VT: 200kV Primary, 100V Secondary
c) Power transformer: 400kV / 200kV, vector group Yd11
The synchro-check VT supplies 110V secondary rated voltage while the protection VT
supplies 100V secondary rated voltage. Therefore, this difference must be balanced:
[25.U_Comp] = 100V / 110V = 0.91
The transformer vector group is defined from the high voltage side to the low voltage side. In
this example, the synchro-check voltage is one of the voltages of the high voltage side, i.e.
the compensation angle setting is 30° (according to the vector group):
[25.phi_Comp] = 30°
2. The setting [25.Opt_Usyn] is used to select the synchro-check voltage source of the
synchronism check element, and this relay can use the corresponding protection voltage for
the synchronism check element.
Setting Value
Voltage Type
PCS-9611 Feeder Relay
The waiting time setting of the auto-closing
synchronism check function
The setting for selecting the dead check mode of
the auto-closing synchronism check function
The time setting of the dead check function of the
auto-closer
The time setting of the synchronism check
function of the auto-closer


[ 25 . U _ Comp ] U


[ 25 . phi _ Comp ]

0 1
Ua Ub
Date: 2014-04-08

U
Pr ot _ Normal Syn _ Normal
  
Pr ot _ Normal Syn _ Normal
2 3
Uc Uab
7 Settings
0.01~60s 0.001s
1~7 1
0.01~25s 0.001s
0.01~25s 0.001s
4 5
Ubc Uca
7-27