ZGF Split DC High Voltage Generator

ZGF Split DC High Voltage GeneratorHigh frequency voltage doubling circuit is adopted, PWM high-frequency pulse width modulation technology of * is applied, closed-loop adjustment is adopted, and voltage feedback is used to greatly improve voltage stability. Use high-performance high-power IGBT devices and driving technology, and adopt special shielding, isolation, and grounding measures based on electromagnetic compatibility theory. The DC high-voltage generator achieves high quality, portability, and can withstand rated voltage discharge without damage. It has the characteristics of high output power and small size, reliable overvoltage, overcurrent, and zero position closing protection functions, and has a 0.75 times voltage switching function. Using new technologies, materials, and devices, it has the characteristics of high output power, small size, and light weight. It has reliable overvoltage, overcurrent, and zero position closing protection functions, with a 0.75 times voltage latch function, and is equipped with a time relay that can set timed voice alarms during testing. The entire instrument is easy to carry, easy to operate, and safe and reliable.

It is mainly suitable for power departments, industrial and mining, metallurgy, steel and other enterprises to conduct 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.

Scope of application:

1. Conductivity current test of valve type lightning arrester.

2. DC withstand voltage test and leakage current measurement of power transformers.

3. DC withstand voltage test and leakage current measurement of high-voltage cables (35-500kV and below).

4. U1mA DC reference voltage test and 0.75U1mA leakage current test for zinc oxide lightning arrester.

Selection Reference - Zinc Oxide Surge Arrester DC Reference Voltage and Leakage Current Test


Rated voltage of lightning arrester kV1035
66110220
DC reference voltage kV2890135168314
设备选型 kV / mAZGF - 60 / 2ZGF - 120 / 2ZGF - 200 / 2ZGF - 200 / 2ZGF - 400 / 3
Selection reference - choose according to the voltage level of the substation


Substation voltage level kV103566110220330
The test voltage kV47105135192305 is greater than 400
设备选型 kV / mAZGF - 60 / 2ZGF - 120 / 2ZGF - 200 / 2ZGF - 200 / 2ZGF - 400 / 3ZGF - 800 / 10
Selection reference - choose based on the qualification level of repair and testing


Maintenance and testing level: Level 5, Level 4, Level 3, Level 2, Level 1
Test voltage kV2890168305 is greater than 400
设备选型 kV / mAZGF - 60 / 2ZGF - 120 / 2ZGF - 200 / 2ZGF - 400 / 3ZGF - 800 / 10
Selection reference - DC withstand voltage and leakage current test of paper insulated cable


Rated voltage of cable Uo/U kV 3.6/66/66/108.7/1021/3526/35
DC test voltage kV173040447105130
设备选型 kV / mAZGF - 60 / 2ZGF - 60 / 2ZGF - 60 / 2ZGF - 60 / 2ZGF - 120 / 3ZGF - 200 / 5
Selection reference - Rubber insulated cable DC withstand voltage and leakage current test


Rated voltage of cable Uo/U kV6/108.7/1021/3526/3548/6664/110127/220
DC test voltage kV 26376378144192305
设备选型 kV / mAZGF - 60 / 2ZGF - 60 / 2ZGF - 120 / 5ZGF - 120 / 5ZGF - 200 / 5ZGF - 200 / 10ZGF - 400 / 5
Selection reference - DC withstand voltage and leakage current test for main insulation of self accommodating oil filled cable


Rated voltage of cable Uo/U kV48/6664/110127/220190/330290/500
DC test voltage kV175275475585775
Equipment selection kV/mA ZGF - 200 / 3 ZGF - 300 / 3 ZGF - 500 / 5 ZGF - 600 / 5 ZGF - 800 / 10

1. High precision and accurate measurement. The voltmeter on the control box directly displays the voltage value applied to the load test sample, without the need for an external voltage divider during use, and the wiring is simple. The instrument has high and low voltage ends for measuring leakage current, and the high voltage end is displayed with a circular shielded digital meter, which is not afraid of discharge shock and has good anti-interference performance, suitable for on-site use;

2. High voltage regulation stability, smooth voltage regulation across the entire range, output voltage regulation using imported single multi turn potentiometers, smooth boosting process, and high regulation accuracy;

3. Negative polarity output, zero start, continuously adjustable, with various protection functions such as overvoltage, overcurrent, return to zero, grounding protection, and disconnection protection. The automatic protection circuit has strong functions, complete and reliable protection, and ensures safe operation;

4. By adopting technology and process manufacturing, applying intermediate frequency voltage doubling circuit, adopting PWM high-frequency pulse width modulation technology and high-power IGBT devices, the output high voltage stability is higher and the ripple coefficient is smaller;

5. Adding high-precision 0.75UDC1mA function brings great convenience to making DC high-voltage generators;

6. The overvoltage setting adopts a digital dip switch, which can intuitively display the set voltage value, with the displayed value unit in kV, making it clear at a glance;

7. The fault sampling adopts a dedicated sensor with an action time of nanoseconds, and the optical isolation element is also nanosecond level, which can quickly turn off the DC main circuit to protect the instrument from damage;

8. The double pressure cylinder adopts new materials, which are lightweight and sturdy. There are three concealed support feet at the bottom, which increase the stability of the pressure doubling cylinder. The exterior is coated with special insulation material, which has good electrical performance and strong moisture resistance;

9. The chassis adopts aluminum alloy chassis, which is small in size, lighter in weight, more beautiful, more reliable, easy to operate, fully functional, and convenient for outdoor use;