5
leakage current dwell time are displayed in digital, which the technique is the first applied
in China. Based on the original products, its performance is further improved. The leakage
current can be continuously and optionally set from 0.1 mA to 100 mA according to the
different security standards and the different requirements of users. For the time testing,
the disadvantage, which the indication difference of the original product is a few greater, is
improved, with the digital count-down-display, the precision of dwell time is increased to
above ±1%, and the testing range is improved to 99 s. Its
function is richer and more practical, and the actual leakage current
values of the measured object can be reflected through the leakage current display to
achieve which products its withstand voltage grade is better compared with the different
lots of the similar products or different manufacturers‟ products, which the security
performance of your products can be guaranteed to have no fault. At the same time, the
digital displayed leakage current can be used to simultaneously display its function, and
extended to measure the reverse voltage and reverse leakage current of the high
voltage silicon rectifier stack, the reserve voltage and reserve leakage current of the high
withstand voltage tube of a dynatron. It is a domestic leading withstand voltage tester
compared from technique performance to quality, reliability.
IV.Working theory
Withstand Voltage tester is made up of high voltage rise circuit, leakage current detecting
circuit and indicating meter. High voltage rise circuit can calibrate and output the required
test voltage; Leakage current is capable of setting breakdown(protection) current;
Indicating meter can directly read out the test voltage value and leakage current value( or
set breakdown current value). DUT reaches the regulated time under the effect of test
voltage, and instrument cuts off test voltage automatically or manually, once breakdown
appears and leakage current goes beyond the set breakdown current, instrument can
automatically cut off the output voltage and alert to confirm whether DUT can bear the
insulation intensity test.
A
C
Standards:
Содержание CS2670A
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