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3.
OPERATION
3.1
Setting up
Warning
Make sure that all necessary safety procedures are followed to ensure that the
line is dead and earthing equipment is installed. Leave earthing equipment
connected at the point of current injection until all connections have been
made. Ensure that the line is earthed at the correct point during the test using
suitably rated earthing equipment. This equipment must only be connected
and used by suitable competent personnel.
Warning
Never make or touch the connections to the line under test without first switching off
the supply to the unit – hazardous voltages are present on the output and the output
clamps are not insulated.
Never break the high current output circuit when the output is switched on – this
may cause arcing.
The output unit output from the Z-OVR control unit is ONLY for connection to a T&R Test
Equipment NLU75/80 output unit. Do not attempt to connect PCU1-SP loading units. The output
unit provides isolation between the control unit and the line under test.
Carefully move the control unit and output unit into position near the base of the line to be tested.
The control unit can either be stood on top of the output unit or in a convenient position if the
output unit is to be mounted closer to the tower.
Summary of Contents for Z-OVR
Page 4: ......
Page 10: ...10 A B C D E F G H I J 1 1 2 Output unit Figure 1 2 Output unit front panel ...
Page 17: ...17 1 2 4 System connections Figure 1 7 System connections ...
Page 31: ...31 Figure 3 2 Phase A B test Figure 3 3 Phase B C test ...
Page 32: ...32 Figure 3 4 Phase C A test Figure 3 5 Parallel test to earth ...
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Page 42: ...42 Drawings Required A3 001778 latest issue Z OVR A3 001770 latest issue NLU75 80 ...
