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Shanghai Guance Electrical Technology Co., Ltd

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    331214265@qq.com

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    13918526188

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    Shanghai Electric Power Science and Technology Park (National University Science and Technology Park)

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ZGF Integrated DC High Voltage Generator

NegotiableUpdate on 01/23
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Overview

ZGF Integrated DC High Voltage Generator Integrated DC High Voltage Generator DC High Voltage Generator

Product Details

The DC high voltage generator is a new generation portable high voltage testing instrument designed and manufactured according to the new power industry standard DL/T848.1-2004 "General Technical Conditions for High Voltage Test Equipment Part 1: DC High Voltage Generator", specifically used to test the electrical insulation strength and leakage current of power devices.This instrument adopts a high-frequency voltage doubling circuit, applies PWM pulse width modulation technology and voltage current dual loop feedback technology to improve power and load adjustment rates, resulting in high voltage stability and low ripple. Using imported high-power IGBT devices and their driving technology to eliminate switch interference and achieve high quality and portability of DC high-voltage generators. Selecting imported high-frequency and high-voltage rectifier diodes makes the voltage doubler more compact and lightweight, improving the overall efficiency of the machine. According to the theories of EMI electromagnetic interference and EMC electromagnetic compatibility, measures such as shielding, isolation, and grounding are adopted to enhance the safety of the entire machine and withstand rated voltage discharge without damage. The instrument has complete protection functions, including zero protection, overvoltage protection, overcurrent protection, and breakdown protection. The protection circuit uses nanosecond level dedicated sensors, which act quickly and reliably, effectively ensuring personal and equipment safety. The overvoltage setting uses a digital dip switch, which is easy to operate and has high setting accuracy. Add an intelligent high-precision 0.75U function button to facilitate the testing of zinc oxide lightning arresters.The instrument adopts an integrated design scheme: the double pressure cylinder and the host are placed in the same chassis, combined and selected components to achieve the advantages of small size, high power, light weight, easy operation, safety and reliability, and high power output quality. It is an ideal testing instrument in the high-voltage testing industry.
Product Parameters
Specifications 60/2 60/3 60/5 120/2 120/5
Rated voltage (kV) 60 60 60 120 120
Rated current (mA) 2 3 5 2 3
Rated power (W) 120 180 300 240 360
Whole machine weight (kg) 9 10
Whole machine weight (kg) 465*390*190 565*390*190
Height of pressure doubling cylinder (mm) 440 535
Output voltage accuracy ± (1.0% reading ± 2 words)
Output current accuracy ± (1.0% reading ± 2 words)
ripple factor ≤0.5%
working method Intermittent use, rated load for 30 minutes
overload capacity The no-load voltage can exceed the rated voltage by 10% and be used for 10 minutes. The charging current is 1.25 times the rated current
power supply AC220V±10% 50HZ



working environment

Temperature: -10-40 ℃
Relative humidity: not exceeding 85% at room temperature of 25 ℃ (no condensation)
Altitude: below 1500 meters
ZGF Integrated DC High Voltage Generator Selection ReferenceSelection Reference

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

Rated voltage of lightning arrester (kV) 10 35
66 110 220
DC reference voltage kV 28 90 135 168 314
Equipment selection kV/mA ZGF - 60 / 2 ZGF- 120 / 2 ZGF- 200 / 2 ZGF- 200 / 2 ZGF- 400 / 3

Selection reference - choose according to the voltage level of the substation

Substation voltage level kV 10 35 66 110 220 330
Test voltage kV 47 105 135 192 305 more than 400
Equipment selection kV/mA ZGF- 60 / 2 ZGF- 120 / 2 ZGF- 200 / 2 ZGF- 200 / 2 ZGF- 400 / 3 ZGF- 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 kV 28 90 168 305 more than 400
Equipment selection kV/mA ZGF- 60 / 2 ZGF- 120 / 2 ZGF- 200 / 2 ZGF- 400 / 3 ZGF- 800 / 10

Selection reference - DC withstand voltage and leakage current test of paper insulated cable

Rated voltage of cable Uo/U kV 3.6 / 6 6 / 6 6 / 10 8.7 / 10 21 / 35 26 / 35
DC test voltage kV 17 30 40 47 105 130
Equipment selection kV/mA ZGF- 60 / 2 ZGF- 60 / 2 ZGF- 60 / 2 ZGF- 60 / 2 ZGF- 120 / 3 ZGF- 200 / 5

Selection reference - Rubber insulated cable DC withstand voltage and leakage current test

Rated voltage of cable Uo/U kV 6 / 10 8.7 / 10 21 / 35 26 / 35 48 / 66 64 / 110 127 / 220
DC test voltage kV 26 37 63 78 144 192 305
Equipment selection kV/mA ZGF- 60 / 2 ZGF- 60 / 2 ZGF- 120 / 5 ZGF- 120 / 5 ZGF- 200 / 5 ZGF- 200 / 10 ZGF- 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 kV 48 / 66 64 / 110 127 / 220 190 / 330 290 / 500
DC test voltage kV 175 275 475 585 775
Equipment selection kV/mA ZGF- 200 / 3 ZGF- 300 / 3 ZGF- 500 / 5 ZGF- 600 / 5 ZGF- 800 / 10
Product features
Product features
1. Stable output voltage: Adopting high-frequency voltage doubling circuit, applying PWM pulse width modulation technology and voltage current dual loop feedback technology to improve power and load regulation rates, resulting in high voltage stability and low ripple. Full range smooth voltage regulation, high output voltage accuracy. The host voltmeter directly displays the voltage value loaded on the load, without the need for an external voltage divider, and the wiring operation is simple. Voltage resolution 0.1kV, current resolution 1uA;

2. Comprehensive protection: With complete protection functions, including zero protection, overvoltage protection, overcurrent protection, and breakdown protection, the protection circuit uses nanosecond level dedicated sensors, which act quickly and reliably, effectively ensuring personal and equipment safety;

3. 0.75U Function: An intelligent high-precision 0.75U function button is added. Pressing this button will automatically switch the voltage and current to 0.75U state, which is beneficial for testing zinc oxide lightning arresters;

4. Zero to zero boost: The boost potentiometer uses an imported multi turn potentiometer for zero to zero boost, ensuring a smooth boost process and high adjustment accuracy;

5. Overvoltage setting: The overvoltage setting uses a digital dip switch, which is easy to operate and has high setting accuracy;

6. Integrated design: Adopting an integrated design scheme, the host and the pressure doubler are placed in one chassis. Using imported high-frequency and high-voltage rectifier diodes to make the voltage doubler compact in size, improve overall efficiency, and facilitate portability;

7. Reliable performance: High performance imported components are selected for key components, and special insulation materials are coated on the surface of the pressure doubling cylinder, which has good electrical performance, strong moisture resistance, and no leakage;

8. Easy to operate: The instrument interface features various functional buttons with a reasonable layout, clear instructions, and is easy to learn and use;

Product alias
ZGF Integrated DC High Voltage Generator - Integrated DC High Voltage Generator - DC High Voltage Generator