Production of domestically produced DC high-voltage generators

NegotiableUpdate on 01/16

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Nature of the Manufacturer: Producers

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Overview

The ZGF-60kV DC high voltage generator is suitable for conducting DC withstand voltage tests or DC leakage current tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, circuit breakers, and generators. It is an important equipment for conducting DC high voltage tests in the power sector, power departments of factories and mines, and power plants.

Product Details

ZGF-60kVDC high voltage generatorSuitable for conducting DC withstand voltage tests or DC leakage current tests on high-voltage electrical equipment such as zinc oxide lightning arresters, power cables, transformers, circuit breakers, generators, etc. The application of PWM high-frequency pulse width modulation technology, closed-loop adjustment, and the use of voltage feedback greatly improve voltage stability. Using high-power IGBT devices and their driving technology, and based on electromagnetic compatibility theory, adopting special shielding, isolation, and grounding measures. makeDC high voltage generatorIt achieves high quality, portability, and can withstand rated voltage discharge without damage.

For small capacitor test samples such as zinc oxide lightning arresters, magnetic blow lightning arresters, etc., first roughly adjust them to 90% of the required voltage (current),

Then slowly increase the voltage (current) value to the desired level using a fine tuned potentiometer, and read the voltage (current) value from the digital display. When measuring the 75% VDC-1mA of zinc oxide lightning arrester, the voltage value should be stopped when the current reaches 1mA (at this time, the voltage and current values can be recorded), and then the yellow button should be pressed to reduce the voltage to 75% of its original value and maintain this state. At this time, the microampere meter value and voltage value can be read. After the measurement is completed, the voltage regulating potentiometer returns to the zero position counterclockwise, press the green button, and press the red button when it needs to boost again.

When testing large capacitors, the voltage should be increased more slowly, and the charging current of the ammeter should be monitored to ensure that it does not exceed the charging current of the generator. It is necessary to slow down the voltage increase speed to avoid excessive charging current. After the experiment is completed, return the voltage adjustment potentiometer counterclockwise to the zero position, and then press the green button to cut off the high voltage. At this point, pay attention to the voltage drop on the voltmeter to around 15kV before using a discharge rod for multiple discharges to ensure safety.

There are three concealed support feet at the bottom, which increase the stability of the pressure doubling cylinder.

ZGF-60kVDC high voltage generatorTechnical Specifications

rulegrid Technical Specifications	60/2	60/5	120/2	120/5	180/2	200/2	250/3	100/200 3/2	200/300 3/2	itsit waitlevel
output voltage(kV)	60	60	120	120	180	200	250	100/200	200/300	600-800kV and other contracts Customized.
output current(mA)	2	5	2	5	2	2	3	3/2	3/2
output power(W)	120	600	240	600	360	400	750	400	600
charging current(mA)	3.0	12	3.0	3.0	3.0	3.0	4.0	4.5/3.0	4.5/3.0
Chassis weight(kg)	4.3	4.3	4.3	4.3	4.3	4.4	4.5	4.5	8.1
Height of pressure doubling cylinder(mm)	Φ80 ×500	Φ80 ×620	Φ80 ×770	Φ80 × 770	Φ110 ×770	Φ110 ×770	Φ110 ×1150	Φ110 × 1150	Φ110 × 1350
Double pressure weight(kg)	6.3	6.8	6.8	7.2	7.2	7.2	12	13.5	22.6
High voltage polarity	Negative voltage polarityZero voltage start, continuously adjustable.
working power supply	AC 220V±10%; 50Hz
voltage measurement	1.0% (full degree) ± 1 word, resolution 0.1% kV
current measurement	1.0% (full scale) ± 1 word, resolution 0.1% uA
Overvoltage setting	≤1.0%
0.75switch	≤0.5%
Ripple coefficient	≤1.0%
voltage stability	random fluctuationsWhen the power supply voltage changes by ± 10%, it should be ≤ 0.5%
working method	Intermittent useRated load for 30 minutes; 1.1 times rated voltage usage: 10 minutes
ambient temperature	-15℃～50℃
relative humidity	When the temperature isAt 25 ℃, not exceeding 90% (no condensation)
altitude	Below 2500 meters

DC high voltage generatorPrecautions

1. Please make sure to repeatedly check whether the connecting wires and grounding wires are correct, and ensure that all parts are well grounded. It is strictly prohibited to connect grounding wires in series. Pay attention to safe distance and ensure personal safety.

2. After each experiment, the boost potentiometer should be returned to zero (both coarse and fine adjustments should return to zero), the green button should be pressed to cut off the high voltage and turn off the power switch, and finally discharge.

3. Do not open the instrument without permission, as this will affect the product's warranty. The manufacturer is not responsible for disassembling on their own.

4. During the transportation of instruments, rainwater erosion should be avoided, and collision and falling should be strictly prevented.