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2.
OPERATION
This chapter describes how to use the PCU1 systems in a variety of applications. Specific
examples are given in the applications section.
2.1
Primary Current Injection with Loading Unit
The loading unit output from the PCU1 control unit is ONLY for connection to a T&R Test
Equipment NLU series loading unit. The loading unit provides isolation from the mains.
MAINS SUPPLY
OUTPUT TO LOAD
Figure 2.1 Connection between control unit and loading unit
(PCU1-SP and NLU5000 shown)
The main output is switched on and off using the on and off push-buttons. The current level is
controlled by the main output control and protected by the output circuit breaker.
WARNING
Never break the high current output circuit when the output is switched on
– this may cause arcing.
2.1.1
Connections
Ensure that the unit is switched off and the test object is isolated and grounded before making
any connections.
