The capacitive voltage divider is an idea device for HV measuring; is composed by HV divider and Digital AC DC peak Voltage Meter, The two parts are connected by the supporting cable.

Digital AC DC peak Voltage Meter 19 inches for standard peak interpolation box and two 4U inserted box structure design and automatic distinguish with ac signal measurement, and keep high peak, the breakdown limit rapid protection functions, 0.2/0.5 accuracy.

Computing core with DSP and digital signal processing technology, through the timely analysis of the signal waveform amplitude and frequency accurately determine point of attack to wear and maintain the high voltage breakdown time and immediately protect the relay out to users. Advanced anti-EMC design makes this device in a variety of high electric field, magnetic field environment and long-term reliable operation, the technology leader in the domestic and foreign similar products.

This device uses resistance-capacitance voltage division method to test HV AC & DC, which as shown in figure 1. The left side is high voltage part, uses resistance-capacitance division circuit, which composed by impedance Z1 and Z2. High voltage Ui input from the upper equipotential ball, low voltage sampling signal output from Z2; the right side is the Digital AC DC peak Voltage Meter , which used for processing the Uo. Uo is processed by rectifying filter amplifier and displayed by LV display instrument.

1.Boot before bleeder signal output line plug into the rear panel instrument input matching interfaces

2. Press "Power on" button, instruments, and began to work state.

3. Turned on by default for the peak / measurement state, key 'RMS / Peak' blue lights, then press this button if a row in the peak (PEAK /), RMS (RMS), true peak (PEAK) 3 kind of measurement function to switch between the loop, if the input signal to DC signal, compared to DC peak (PEAK), mean (AVR) and the true peak (PEAK) switch between.

4. Press 'k1/k2 / packing' key combination '<> shifted to the right', '+ increase', '- to reduce' button to set the four AC and DC voltage divider divider and high voltage protection than the limits set, k1 for the exchange of partial pressure ratio, k2 for the DC divider ratio, OVER VOLTAGE SET for the need to set the high-voltage protection action of the voltage, set the finished press 'OK' button that is set, instrument will automatically save the settings partial pressure ratio.

5. 'Remain open' button. Press this key to cycle the cursor <> in the switch ON and OFF at peak times on behalf of the breakdown set to keep the opening and closing, press the OK button to set the input. Into the open, the need to enter the opening range breakdown to maintain function, such as: Set after 10kV, the peak form in the measurement of high voltage 10kV peak voltage Gao Yu, the subject breakdown, equipment breakdown before opening to maintain function, if less than settings are not maintained breakdown occurs. Setting range 0 to 9999.99KV, the user can set according to the actual use, so as to avoid the instability of high voltage signals or the output transformer mistaken mutation test sample breakdown.

6. When the measurement state, if the breakdown test products, instruments will be reported to the , and set the breakdown voltage peak time grid display. Following figure, the breakdown voltage for the 63.273KV be accurate to maintain and display. This value may at any time to view, and save it to the next breakdown time automatically covered by the new breakdown value, peak time only shows the current breakdown. Automatically cleared after shutdown.

7.Following the security function. When a breakdown occurs, the following insurance output interface into a normally open normally closed to the duration of recovery after 3 seconds. With alarm. This interface capacity of up to 250V/0.5A, can power an external relay control, high voltage breakdown in time to protect. When the measured pressure exceeds the set voltage value, high-voltage protection action, over-voltage protection relay output interface will become a normally open normally closed until the pressure dropped to about 95% of set value, normally open normally closed back. This feature is user-flexible application, protection can be achieved only pressure regulator can also be achieved when using input over-voltage breakdown limits should be higher than the peak set limits. Note the following instruments to provide protection to refrain from over-capacity in the use interfaces, it is recommended to use with external power relays.

8. In the measurement of the state, any key function can be used at any time, does not affect the normal operation of measuring instruments.