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3.3
Timing of Auto-reset/Reclosing Devices (PCU1-SP & LT)
Figure 3.3 PCU1-SP with auto-reclose device
3.3.1
Timer Mode
Single contact
3.3.2
Connections
Connect current output from
loading unit to desired input on
device under test.
Connect the trip contact on the
relay under test to contact set
1 on the control unit.
3.3.3
Test Procedure
Switch on the main supply
switch.
Set timer mode switch to the
off position.
Ensure that the output output
control is in the zero position.
Check that connections are
made as above.
Press output on push-button
and increase the output
current to the desired level.
Press output off push-button.
Select the single contact
position on the timer mode
switch.
Press the output on push-
button
When the device under test trips the timer will start and the output will be switched off
automatically.
When the device auto-resets the timer will stop.
