ABB RELION REX640 - Page 952

I/I
n
U/U
n
Fault detected
Normal
sensitivity
High
sensitivity
Str A Ph Sel GFCLo A Ph Sel GFC
Ph
V Ph Sel GFC
PP V Ph Sel GFC
Figure 528: Overcurrent/undervoltage characteristics
Table 913: Conversion from element start to monitored data signals
Start of element START_GFC STARTS_GF
C
RELEASE_P
E
RELEASE_P
P
I
A
> & U
A
< &
EARTH_FLT |
I
A
>> & EARTH_FLT
TRUE AG Fault AG Fault No fault
I
B
> & U
B
< &
EARTH_FLT |
I
B
>> & EARTH_FLT
TRUE BG Fault BG Fault No fault
I
C
> & U
C
< &
EARTH_FLT |
I
C
>>& EARTH_FLT
TRUE CG Fault CG Fault No fault
I
A
> & I
B
> & U
AB
< |
I
A
>> & I
B
>>
TRUE AB Fault No fault AB Fault
I
B
> & I
C
> & U
BC
< |
I
B
>> & I
C
>>
TRUE BC Fault No fault BC Fault
I
C
> & I
A
> & U
CA
< |
I
C
>> & I
A
>>
TRUE CA Fault No fault CA Fault
I
A
> & I
B
> & U
AB
< &
EARTH_FLT |
I
A
>> & I
B
>> &
EARTH_FLT
TRUE AB Fault AB Fault AB Fault
I
B
> & I
C
> & U
BC
< &
EARTH_FLT |
TRUE BC Fault BC Fault BC Fault
Table continues on the next page
Protection functions 1MRS759142 F
952 REX640
Technical Manual