Kikusui TOS9200, Руководство по эксплуатации

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A-2 Appendix TOS9200/9201
[3] High-voltage transformer
Increases the output voltage for the power ampli fi cation circuit to a maximum of 5
kV at a ratio of 1 to 50. Has a transformer capacity as large as 500 VA.
[4] Reference-voltage generation circuit
Generates a reference voltage corresponding to the test voltage in DC withstanding
voltage testing and insulation resistance testing. During the preset voltage rise time
(RISE TIME), the reference voltage increases from zero to the preset test voltage,
exerting little transient voltage stress on the DUT.
[5] 6 kV DC/DC converter (TOS9201 only)
The high-voltage generation circuit for DC withstanding voltage testing. At an out-
put of 6 kV, the converter enhances the output from the reference-voltage generation
circuit by approximately 300 times to obtain 1.25 kV. Further, it achieves 6 kVDC
in the 4-time Cockcroft and Wolton circuit. The converter realizes a low-ripple sta-
ble test voltage of up to 6 kV (maximum rated power of 50 W) with a voltage regu-
lation of 1 % or less.
[6] Discharge circuit
Equipped with a function for forcibly releasing a charge in the DUT contained at the
end of a DC withstanding voltage test or an insulation resistance test, thus prevent-
ing electric shock.
[7] 1 kV DC/DC converter
High-voltage generation circuit for insulation resistance testing. At an output of
1 000 V, the converter enhances the output from the reference-voltage generation cir-
cuit by approximately 200 times to obtain 1 000 V. At -25 V to -1 000 V (a maximum
rated current of 1 mA), the converter realizes a low-ripple stable test voltage with a
voltage regulation of 1 % or less.
[8] IR voltmeter
Digital voltmeter for insulation resistance testing with an accuracy of ±(1 % of read-
ing + 1 V). The output voltage is divided using a high-precision, high-voltage resis-
tor. These voltages are input to the A/D converter and displayed on the LCD during
the test. The insulation resistance is obtained by dividing voltage by current which
detected on the current detection circuit in the insulation resistance meter.
[9] Voltmeter
Equipped with a high-precision digital voltmeter with an accuracy of ±(1 % of
r 30 V) and an analog voltmeter with an accuracy of ±5% f.s.
(a) Digital voltmeter
The digital voltmeter divides the output voltage using a high-precision high-voltage
resistor, and converts divided voltages into DC voltages in the AC/DC conversion
circuit. These voltages are collected by the A/D converter and displayed on the LCD