Datakom DKM-409, Руководство пользователя

Страница: 24 / 36

J38D01 - 24 -
2.15 OVERCURRENT DETECTOR CONFIGURATION
The “OVERCURRENT” function is used in order to generate a protection relay output when
any of the phase currents exceeds the preset value for “TIMEOUT” duration.
The response time depends on the overcurrent rate as shown on below graph.
OVERCURRENT AREA
PERMITTED AREA
A: Over current value
T: Timeout value
The fastest detection time is 500 milliseconds.
The overcurrent function will be assigned to a relay output.
When overcurrent function is assigned to a relay, then other configurations for that relay is
discarded.
4A
3A
2A
A
T/2 T T/4 T/8
T/2 T T/4 T/8