ANSI10000028-1-en.vsd
3IP
3VP
BLKOC1
TROV1
TROC1
CVGAPC
TRUV1
S
R
Q
Q
ANSI10000028 V1 EN-US
Figure 376: Configuration of the inadvertent energizing function
The setting of the general current and voltage function (typical values) is done as shown in
table 413.
Table 413: The setting of the general current and voltage function
Measured Quantity Pickup in % of generator
rating
Time delay in seconds
UndervoltagePickup Maximum generator
Phase to Phase voltage
< 70% 10.0 s
Overvoltage Pickup Maximum generator
Phase to Phase voltage
> 85% 1.0 s
OvercurrentPickup Maximum generator
Phase current
> 50% 0.05 s
In normal operation the overvoltage trip signal is activated and the undervotage trip signal is
deactivated. This means that the overcurrent function is blocked.
When the generator is taken out of service the generator voltage gets low. The overvoltage trip
signal will be deactivated and the undervoltage trip signal will be activated after the set delay. At
this moment the block signal to the overcurrent function will be deactivated.
Section 11 1MRK 502 066-UUS B
Multipurpose protection
706
Technical manual
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