Kikusui TOS9200, Руководство по эксплуатации

Страница: 153 / 172

TOS9200/9201 Specifications 8-5
*3
In AC withstanding voltage testing, a current
fl ows into the stray capacity of measurement leadwire and fi xtures.
When the optional high-voltage scanner TOS9220/9221 is used, a current of approximately 22 μ A/kV fl ows into the
stray capacity of each scanner. The table below shows the approximate currents fl owing into such stray capacity.
When the GND is set to LOW, a current fl owing into the stray capacity is added for measurement purposes to the cur-
rent fl owing into the DUT. In particular, for high-sensitivity, high-accuracy judgement, it is necessary to add the cur-
rent fl owing into the stray capacity to the lower/upper current.
When the GND is set to GUARD, the effect of the current fl owing into the stray capacity is negligible. If the offset
cancel function is used, the current fl owing into the stray capacity can be eliminated from the measurement.
*4
With the GND set to GUARD, current measurement is disabled if the part of the DUT connected to the LOW termi-
nal is grounded, which poses extreme danger. Never ground the DUT. In ordinary operation, set the GND to LOW.
Output voltage 1 kV 2 kV 3 kV 4 kV 5 kV
Hanging a 350 mm test leadwire (Typ. value) 2 μ A 4 μ A 6 μ A 8 μ A 10 μ A
Using the accessory leadwire TL01-TOS (Typ. value) 16 μ A 32 μ A 48 μ A 64 μ A 80 μ A
High-voltage scanner
(Typ. value, not including the test leadwire)
22 μ A 44 μ A 66 μ A 88 μ A 110 μ A