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Standard capacitor: internal Cn. It is the measuring basis.
Cn current detection: it is used to detect the internal standard
capacitor current, 10μA ~ 1A. The input resistance is <2Ω.
CX positive connection current detection: it is only used for the
measurement of positive connection, 10μA ~ 1A. The input
resistance is <2Ω.
CX negative connection current detection: it is only used for
the measurement of negative connection, 10μA ~ 1A. The input
resistance is <2Ω.
Negative connection digital isolation communication: precision
MPPM digital modem is adopted to transmit the current signal of
negative connection to the low voltage side. The isolation voltage is
20KV.
2. Operating principle
After the measuring is started, the high voltage setting value
would be transmitted to the variable frequency power supply that
would adjust the output to the setting value by the algorithm of PID.
The measurement circuit would send the actual measured high
voltage to the variable frequency power, finely adjust the low
voltage and realize the accurate high-voltage output. According to
the setting of positive and negative connection, the measurement
circuit would automatic select the input and switch the range based
