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10
Chapter 2 Precautions on Handling
This chapter describes the precautions to be followed in the handling of this
tester.
When using the tester, take utmost care to ensure safety.
!
WARNING The tester derivers a 5 kV test voltage which can cause human
injury or death. When operating the tester, be extremely careful and observe the
cautions, warnings, and other instructions given in this chapter.
2.1 Prohibited Operations
Do not turn on/off the power repeatedly
After turning OFF the power switch, be sure to allow several seconds or more before
turning it ON again. Do not repeat turning ON/OFF the power switch rapidly. If you
do this, the protectors of the tester may not be able to render their protective
functions properly. Do not turn OFF the power switch when the tester is delivering
its test voltage–you may do this only in case of emergency.
Do not short the output to the earth ground
Pay attention so that the high test voltage line is not shorted to a nearby AC line
or nearby devices (such as conveyors) which are connected to an earth ground. If
it is shorted, the tester chassis can be charged up to a hazardous high voltage. Be
sure to connect the protective grounding terminal of the tester to an earth line. If
this has been securely done, even when the HIGH VOLTAGE terminal is shorted to
the LOW terminal, the tester will not be damaged and its chassis will not be charged
up to the high voltage.
Be sure to use a dedicated tool when grounding the protective grounding terminal.
!
CAUTION The term "AC line" here means the line on which the tester is
operating. That is the line to whose outlet the AC power cable of the tester is
connected. It may be of a commercial AC power line or of a private-generator AC
power line.
Do not apply an External Voltage
Do not apply a voltage from any external device to the output terminals of the
tester.
The voltmeter on the front panel cannot be used as stand-alone voltmeter.
They may be damaged if their output terminals are subject to an external voltage.