3-2
INSTALLATION AND OPERATION INSTRUCTIONS
OPERATION (continued)
4. Observe and record the resultant leakage current or insulation resistance value on the
“
Microamperes/Megohms
”
meter. If no current reading is indicated, select a lower sensitivity
range until an observable reading is obtained at less than full scale on the
“
DC Micro-
amperes/Megohms
”
meter.
NOTE: The megohmmeter is scaled to read megohms directly at two test voltages; 2.5 kV
(lower megohm scale) and 5 kV (upper megohm scale). If any other test voltage is used, the
megohm reading must be taken normally by reading megohm scale corresponding to the
voltmeter range setting, multiplied by the megohm range multiplier and then multiplied by the
factor read on the
“
Multiply Megohm Reading By
”
scale of the voltmeter. For example, if a
test voltage of 1 kV is used and the meter is on the 2.5 kV scale, the lower megohm scale
reading and range multiplier result reading must be multiplied by .4. Similarly if a test voltage
of 1 kV is used on the 5 kV scale, the corresponding upper megohm scale reading and range
multiplier result must be multiplied by .2
NOTE: Be sure that the
“
Ground
”
jumper is in the desired position. Certain test conditions
may require that leakage currents associated with the
“
Ground
”
post be measured by the
microammeter.
5. When testing is completed, return the
“
Raise Voltage
”
control to its zero (0) or fully counter-
clockwise position.
6. Observe that the
“
Kilovolt
”
meter indicates zero (0) output.
7. Turn off the high voltage power supply by depressing the
“
High Voltage
”
power switch.
Observe that this switch is no longer illuminated and is in its out position.
8. If continued testing is required, return to step 2 above.
NOTE: Further testing cannot be accomplished once either or both of the power switches
have been disengaged unless the
“
Raise Voltage
”
control has been reset to its zero or full
counter-clockwise position.
9. Turn the tester off by depressing the
“
Power
”
switch. Observe that this switch is no longer
illuminated and that it is in its out position.
