. Pick-Up and Drop-Off voltage to be checked
for all TCS relay.
. Before testing technical data of devices
to be checked.
. Testing to be performed by voltage
injection on coil terminals.
. Function
check by simulation with nominal voltage of trip circuits.
. Connect DC Variable voltage to tripping
relay coil and increase voltage until relay trips. Note this
voltage.
. Switch OFF the voltage.
. Connect the NO contact of the Tripping
relay to stop the timer.
. Again
apply the voltage and note the time of operation
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