6CP50/10-3
3-2
CONTROLS AND INDICATORS
Control Panel (cont’d)
4. High Voltage Off/Ready. Momentary switch turns high voltage off when activated. Ready lamp
illuminates when all pre-conditions required for high voltage activation are met.
Conditions required for Ready lamp illumination are:
Power applied to unit and Main Power Breaker (1) on, Main Power lamp illuminated (2).
External Interlock circuit series loop must not be open (10).
Voltage Control (5) must be at zero. (Zero Start)
Overcurrent circuit must be reset if Reset lamp is illuminated (7).
5. Voltage Control. Turn clockwise to raise output voltage. High voltage cannot be activated if Voltage
Control is not started at zero.
6. Overcurrent Trip Adjust. Dial adjusts from 1 to 11 corresponding to 10% to 110% of rated output current
(40mA). Overcurrent Trip/Reset lamp illuminates and high voltage turns off when output current exceeds
setting, causing circuit to trip. Circuit also acts as short circuit and overload protection on high voltage
output. To reactivate high voltage, Voltage Control (5) must be returned to zero, and Overcurrent Reset
switch (7) must be pressed to clear overcurrent circuit.
7. Overcurrent Reset. Reset lamp illuminates to show that overcurrent circuit has tripped. High voltage
circuits are deactivated. Momentary Reset switch must be pressed to extinguish Reset lamp to allow high
voltage to be reapplied after returning Voltage Control (5) to zero.
8. Currentmeter. Displays output current of test set, units based on current meter range setting.
9. Voltmeter. Displays output voltage of test set, units in kilovolts.
10. Ext. Intlk. – SX1. Provides for user connection of external interlock or auxiliary safety control device such
as emergency off switch, gate switch, foot switch, dead man switch, etc. Included plug has shorting
jumper installed to complete circuit. Jumper must be removed and cable connected to user supplied
device by user if desired to use this provision. Only non-energized switch or dry relay contact devices may
be used. This is a series 120VAC circuit that must remain closed for high voltage to be activated.
11. TX2. Provided interconnect cable is connected here and to the same designation connector on the high
voltage unit. This is the metering and return connection. Do not attempt to operate high voltage unit
without this cable connected at both ends.
12. TX1. Provided power interconnect cable connects here and to the same designation connector on high
voltage unit.
13. Line Cord. Supplies 220V input power to unit.
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