T&R PCU2 mk5, Руководство по эксплуатации и техническому обслуживанию

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3.3 Timing Devices with NO Auxiliary Contacts
3 2
LOADING UNIT
CONTROL UNIT
MAINS
SUPPLY
DEVICE
UNDER
TEST
3
2 6
7 3
2 6
7
Figure 3.3 PCU2 system with circuit breaker
3.3.1 Timer Mode
Current Operated
3.3.2 Connections
Connect current output from
loading unit to desired input on
device under test.
3.3.3 Test Procedure
Switch on the main supply switch.
Set timer mode switch to the off
position.
Ensure that the output regulator is
in the zero position.
Set loading unit series/parallel
switch to appropriate settings.
Check that connections are made
as above.
Press output on push-button and
adjust output regulator until the
desired output level is indicated.
Press output off push-button.
Select the current operated
position on the timer mode switch
and ensure the timer is reading
zero.
Press the output on push-button
When the device under test trips
the timer will stop and the output
will be switched off automatically.