ABB REU 523 - Page 22

22
1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
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When the checksum, calculated according to the example above, equals the
checksum of the relay, the switches in the switchgroup have been properly set.
The factory default settings of the switches and the corresponding checksums are
presented in the tables below.
Switch
No
Position Weighting
factor
Value
11x1=1
20x2=0
31x4=4
40x8=0
51x16=16
60x32=0
71x64=64
80x128=0
Checksum
SG_
∑
=85