10 | 8 4
C: capacitance of the DUT
If the time constant of the DUT is known, then the time required to discharge to 30V can be
calculated by the above formula after the output is cut off.
8)
Turn ON or OFF the Power Switch
Once the power switch is turned off, be sure to allow several seconds or more before turning it ON
again, never turn on and off the power switch repeatedly, so as not to cause erroneous actions.
Especially in the state of high-voltage output, it is very dangerous to continuously turn on and off
the switch.
When turn or off the power switch, no items should be connected to the high
voltage output terminals to avoid danger due to abnormal high voltage output.
9)
Do Not Touch the High Voltage Area in Test Status
While the tester is in test state, there is hazardous high voltage electricity on the high voltage
output, high voltage test line, high voltage probe, DUT and their exposed conductor’s
surroundings, please do not approach or touch these areas.
Warning: Do not touch the alligator clip on the test line. When the instrument is in the test
state, the rubber skin on the alligator clip is not insulated enough, it is very
dangerous to touch it!
10)
Do not short the output terminal to the earth ground
Do not short circuit the high voltage output cable, grounding wire and transmission line or the
grounding wire of other connectors or AC power to avoid the entire tester’s chassis being charged
to a very dangerous voltage. To short the high voltage output terminal HV1 to HV2 or RTN/LOW,
the entire housing of the tester must be reliably connected to the ground.
11)
Do not connect external voltage to the test terminal
Do not apply a voltage from any external device to the output terminals of the tester. The tester
does not have an external discharge function in the non-discharge state. The tester may be
damaged if its output terminals are subject to an external voltage.
2.2
Handling Meansures
1)
Actions When in Emergency
In case of an emergency (such as electric shock hazard or burning of DUT) while the tester’s high
voltage output is not cut off, take the following actions. You may do either (a) or (b) first. But be sure
to do both:
a.
Turn OFF the power switch of the tester.
b.
Disconnect the AC power cord of the tester from the AC line receptacle.
2)
Handling for Dangerous State of Faulty Tester
Under the following circumstances, all problems occurred are regarded as very dangerous, even if
【
STOP
】
key is pressed, its output terminal may still delivering high voltage, therefore, you must be
extremely careful.
When
【
STOP
】
is pressed, DANGER indicator light is still on.
The voltmeter has no voltage reading, but DANGER indicator light is still on.
When above situations occur, please immediately turn OFF the power switch and disconnect the AC
power cable from the AC line receptacle. Immediately keep far away from the instrument and confirm
no risk of the test circuit by the technical personnel; or keep the instrument still for more than one
hour and confirm no output voltage in the test terminal. Remove the relevant connecting lines and
send the instrument back to us for maintenance.
