3
K
：
Main power switch
K1
：
Power switch of time relay
AK
：
Zero limit switch of voltage regulator
AQ
：
Start button
CL
：
High voltage silicon stack
AT
：
Stop button
A
：
Output ammeter
KV:Output voltmeter
Figure (2)
V.Methods of Application
(1) Before testing, the shell “
” terminal of high voltage testing transformer and
grounding “
” terminal of power control box must be properly grounded,
otherwise, it will be harmful to personal and equipment safety.
(2) Before operation, users must be aware of the electric principle wiring diagrams of
high voltage testing transformer and power control box. During checking DC
withstand voltage and leakage testing, high voltage silicon stack or microammeter
can be suspended at high voltage terminal of high voltage testing transformer.
(3) When preparation is ready and the circuit is right after checking, the main power
can be closed, the red switch indicator light is also on at this time. If the light is not
on, handle of voltage regulator should be turned back to zero position at
anticlockwise direction. The indicator light on red stop button is on, otherwise start
