36
3.4
Timing Devices with NO Auxiliary Contacts (PCU1-SP & LT)
Figure 3.4 CIT with miniature circuit breaker
3.4.1
Timer Mode
Current Operated
3.4.2
Connections
Connect current output from
loading unit to desired input on
device under test.
3.4.3
Test Procedure
Switch on the main supply
switch.
Set timer mode switch to the
off position.
Ensure that the output control
is in the zero position.
Check that connections are
made as above.
Press output on push-button
and adjust output control until
the desired output level is
indicated.
Press output off push-button.
Select the current operated
position on the timer mode
switch.
Press the output on push-
button
When the device under test
trips the timer will stop and the
output will be switched off
automatically.
