GW Instek GPT-800 Series - Manual (Page 11)

ELECTRICAL SAFETY TESTER
USER MANUAL
15
(equipment under test).
12) Connect a red high pot probe from “High voltage output
terminal (17)” to the EUT (equipment under test).
13) Press START key once to appear STBY (Stand by) on the
display, then adjust (13) the voltage knob until the value of 5.00
is display on the panel.
14) Then, press START key to proceed testing, during testing, the
warning indicator (3) will be flashing continuously.
15) If the value displayed on the panel drops because of the load
adding test, adjust “Voltage knob (13)” to maintain the value at
5.00.
16) If the test on the EUT is approval, the PASS indicator on the
panel will be lighted up.
17) During testing, if the ARC is occurred, both the lights of ARC
and FAIL will be on, and the buzzer will blare out a warning,
now remove the high pot probe from the EUT, and press RESET
to turn off the buzzer, ARC and FAIL lights, then the instrument
will be back to the initial status.
18) If the test is over the jump-out current, the FAIL indicator on the
panel will be lighted up and the buzzer will blare out a warning.
Now remove the high pot probe from the EUT, and press
RESET to turn off the buzzer and FAIL light, then the
instrument will be back to the initial status.
ELECTRICAL SAFETY TESTER
USER MANUAL
16
5-3. Insulation Test
Take GPT-825 as example, set output to 1000V, but without
specifying the test time.
1) Connect the Withstanding/Insulation Tester to the ground.
2) Adjust the “Voltage Knob” counter-clockwise to the lowest
voltage position.
3) Set power switch to ON position.
4) Set the key (15) to IR position.
5) Set the Timer to OFF position.
6) Connect a test lead from the Return terminal (18) to the EUT
(equipment under test).
7) Connect a red high pot probe from “High voltage output
terminal (17)” to the EUT (equipment under test).
8) Press START key once to appear STBY (Stand by) on the
display, then, press START key to proceed testing. During
testing, the warning indicator (3) will be flashing continuously.
9) If the insulation resistance of the EUT is within 2000MΩ, thus
the panel will display the insulation resistance value of the EUT,
and the testing is kept going until the RESET key is pressed.
10) If the test on the EUT is disapproval, the FAIL indicator on the
panel will be lighted up and the buzzer will blare out a warning.
Now remove the high pot probe from the EUT, and press
RESET to turn off the buzzer and FAIL light, then the
instrument will be back to the initial status.