6CP50/10-3
4-1
SECTION 4: ELECTRICAL SET-UP
1. Locate the desired location for the test set. Prepare the main power input cable for plugging in to the
proper facility power (i.e., 120 volts AC or 220 volts AC). Leave plug unconnected at this time.
2. Connect a sufficient ground from the ground stud on the base of the high voltage transformer to a proper
facility ground using a low inductance cable rated for 20 amperes or greater, or the supplied 10 AWG GND
cable.
3. Connect TX1 and TX2 interconnect cables between controls and high voltage transformer.
4. External Interlock
If an external interlock is not to be used, plug the connector as supplied into the socket on the control
panel marked EXT INTLK, SX1, if not already in place.
If an external interlock is to be used, remove the jumper on the plug of the EXT INTLK circuit and connect
the external security circuit at these points. (NOTE: The external interlock circuit must consist of a closed
loop of dead contacts. When the control power is on, the external circuit will be energized with 120 volts
AC.)
High Voltage Connection
1. Connect the low side (return) of test specimen to the return post with the provided red test lead. See
Ground-Guard-Return connection instructions on following pages.
2. Connect the high side of test specimen to either the toroid on top of HV tank (for 50kV output) or the 10kV
connection on the side of the tank. Be sure that the Measurement Divider switch on the control panel is
set to match the high voltage connection being made.
3. Check that control circuit breaker is turned off and connect input main power cable to a suitable grounded
receptacle
Brief connection instructions and a diagram are on following pages.
WARNING:
Be sure the Main Power plug of the control unit is unplugged before proceeding.
WARNING:
Main power circuit breaker on the front panel must be in the OFF position before
proceeding. Test specimen must be de-energized and discharged.
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