TOS8870A
WARNINGS AND CAUTIONS FOR OPERATING THE TESTER
11
•
DANGER lamp keeps on lighting even when the STOP switch has been pushed.
•
DANGER lamp is turned off but the indicator of the output voltmeter continues
swinging.
If the Tester shows any irregular performance, it is possible that a high voltage may be output irre-
spective of the operator's will. Suspend the operation of the Tester immediately.
•
Never attempt to repair the Tester for yourself. Please order your Kikusui agent/dis-
tributor for such service.
2.7.2 Fade out of DANGER lamp
In the case the DENGER lamp has been faded out, it may cause erroneous operation of the Tester,
which in turn give rise to dangerous electri
fi
cation. Please entrust us with the repair of such a
defective Tester.
2.8 Attention for Trouble-Free Operation
1.
The maximum output voltage of the Tester reaches higher than 5 kV under no-load condition,
and even higher voltage in proportion to the line voltage
fl
uctuation. But be sure to operate
the Tester at a lower voltage than the speci
fi
ed 5 kV.
2.
The heat dissipation capacity of the high-voltage transformer, embodied in the Tester, is
designed to be a half of the rated output, taking into consideration of the size, weight and cost.
Accordingly, if the test is to be conducted at the CUTOFF CURRENT of 100 mA, leave a sus-
pension time longer than the test duration. Incidentally, the maximum allowable test duration
is 30 minutes at ambient temperature of 40
˚
C or lower.
The above timing is not applicable if the Tester is used at the CUTOFF CURRENT setting of
25.5 mA or lower.
Fig.2-6
Test Duration and Suspension of Testing
3.
The Tester can be properly used with the input voltage range of nominal input voltage
±
10 %,
but its operation becomes incomplete outside of this range and leads to possible failures.
It is thus important to adjust the voltage within the range of nominal input voltage
±
10 % by
any proper means.
4.
The operation and storage of the Tester under exposure to the direct sunshine, high tempera-
ture and humidity or dusty environment should be avoided.
5.
The Tester is incorporated with a transformer of high output voltage up to 500 VA.
A considerably large current (in scores of amperes) may
fl
ow through the commercial power
line, which is connected with the Tester in the following two cases:
• In the duration of scores of milli-second, in which the Tester detects that a DUT has
failed the testing.
• At an instant when the test is executed.
Also it is important to determine the capacities of the power line and of any electronic device
connected to the same line, taking into consideration of such a large current.
WARNING
A
Test
Duration
B
Suspension
of Testing
Time elapsed
A
≤
30 minutes (ambient temp. at 40
˚
C or lower)
A
≤
B
