50 Electronic Motor Protection Relays
3. Set the operating time
It refers to the time of delaying EMPR operation in order to prevent Trip from a motor’s staring current.
It refers to the time taken from the start of overcurrent to EMPR Trip. After the set O-Time, EMPR is Tripped.
Set the operating current
5
Check the LED condition when operation
Definite time characteristic 1
1
Check the rated voltage and
apply the control power to A1
and A2 terminal
2. Check the Test/Reset button
operation
current(s)
time(%)
Operation
setting method