Table 17:
General settings of the differential protection function
Setting parameter
Select value for solution 1 (wye
connected CT)
Selected value for solution 2 (delta
connected CT)
GlobalBaseSelW1
CTPrim / GlobalBaseSelW1
(CTPrim / GlobalBaseSelW1) /
sqrt(3)
GlobalBaseSelW2
CTPrim / GlobalBaseSelW2
(CTPrim / GlobalBaseSelW2) /
sqrt(3)
GlobalBaseSelW3
CTPrim / GlobalBaseSelW3
(CTPrim / GlobalBaseSelW3) /
sqrt(3)
ConnectTypeW1
WYE (Y)
WYE (Y)
ConnectTypeW2
delta=d
wye=y
1)
ClockNumberW2
1 [30 deg lag]
0 [0 deg]
1)
ZSCurrSubtrW1
On
Off
2)
ZSCurrSubtrW2
Off
Off
TconfigForW1
No
No
TconfigForW2
No
No
LocationOLTC1
Not used
Not used
Other Parameters
Not relevant for this application.
Use default value.
Not relevant for this application.
Use default value.
1)
To compensate for delta connected CTs
2)
Zero-sequence current is already removed by connecting main CTs in delta
Delta-wye connected power transformer without tap charger
SEMOD167854-209 v4
Single line diagrams for two possible solutions for such type of power transformer with
all relevant application data are given in figure
.
Section 7
1MRK 502 071-UUS A
Differential protection
148
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Application manual
Summary of Contents for RELION 670 SERIES REG670
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