5-1
SET-UP AND OPERATION
1. Place unit on bench or other suitable flat surface.
2. Undo (2) latches on side of case.
3. Remove cover, power, control, return, and output cables. Exercise caution in removing cover
because control cables are permanently connected to the bottom of the case.
4. Separate High Voltage (bottom) section and control (cover) section to provide safe operating
distance between operator and high voltage.
5. Locate red high voltage output lead. Insert banana jack end of lead into jack provided on top
of high voltage section.
6. Connect high voltage and low voltage return leads to object under test.
7. Connect input power cord to a 117 VAC, 60 Hz grounded outlet.
8. Turn on Main Power toggle switch. Main Power indicator lamp should glow. Digital output
meters should now display zeros (+/-1 count).
9. Turn output voltage control knob to zero (full counter clockwise position). Depress high
voltage on pushbutton. Button should now glow indicating high voltage is energized. Raise
output voltage to desired test level by turning voltage control knob clockwise.
While raising the output voltage, pay special attention to the output currentmeter. If it should
suddenly show a high reading, this means the sample has broken down. Arcing or temporary
breakdowns will be indicated by the fault lamp.
10. At completion of high voltage test, return voltage control knob to zero and release high voltage
on pushbutton. High voltage on lamp should go out. If high voltage on pushbutton is released
while voltage control knob is off of zero, high voltage will deenergize and cannot be renergized
until voltage control knob is returned to zero.
11. To repack unit for transport, reverse step 3 above. Be sure to remove high voltage lead from
jack on top of high voltage section. Failure to do so may scratch or damage control panel.
A Note About Automatic Current Limit Circuit:
Unit is equipped with automatic current limit circuit which limits maximum output current to
approximately 10 milliamperes under dead short conditions. This feature consists of a high
impedance high voltage transformer combined with a series connected primary resistance to limit
the maximum current. This circuit will allow you to attain maximum output voltage when unit is
lightly loaded (less than 1 milliampere) while protecting the unit from damage when shorts or
breakdowns occur in the object under test.
