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ZGF series integrated DC high voltage generator
Adopting high-frequency voltage doubling circuit, applying new PWM pulse width modulation technology and voltage current dual loop feedback technology
Product details
Product IntroductionProduct Introduction
The high-voltage generator is a new generation portable high-voltage detection instrument designed and manufactured according to the Chinese power industry standard DL/T848.1-2004 "General Technical Conditions for High Voltage Test Equipment Part 1: DC High Voltage Generator", specifically used to detect the electrical insulation strength and leakage current of power devices.
The high-voltage generator adopts a high-frequency voltage doubling circuit, applies advanced PWM pulse width modulation technology and voltage current dual loop feedback technology, improves power supply adjustment rate and load adjustment rate, and achieves high voltage stability and small ripple. Using imported high-power IGBT devices and their driving technology to eliminate switch interference and achieve high quality and portability of 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 high-voltage generator adopts an integrated design scheme: the double pressure cylinder and the host are placed in the same chassis, combined with new technology and the use of new 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 nickname: High Voltage Generator, High Voltage Generator, Medium Frequency DC High Voltage Generator
scope of applicationScope Of Application
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1. Conductivity current test of valve type lightning arrester.
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2. DC withstand voltage test and leakage current measurement of power transformers.
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3. DC withstand voltage test and leakage current measurement of high-voltage cables (35-500kV and below).
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4. U1mA DC reference voltage test and 0.75U1mA leakage current test for zinc oxide lightning arrester.
Product parametersProduct Parameters
Technical Parameter
| specifications | 60/2 | 60/3 | 60/5 | 120/2 | 120/3 | 120/5 |
| Rated voltage (kV) | 60 | 60 | 60 | 120 | 120 | 120 |
| Rated current (mA) | 2 | 3 | 5 | 2 | 3 | 5 |
| Rated power (W) | 120 | 180 | 300 | 240 | 360 | 600 |
| Whole machine weight (kg) | 9 | 10 | ||||
| Overall volume (mm)3） | 465*390*190 | 565*390*190 | ||||
| Height of pressure doubling cylinder (mm) | 440 | 535 | ||||
| voltage accuracy | ± (1.0% reading ± 2 words) | |||||
| Output current accuracy | ± (1.0% reading ± 2 words) | |||||
| ripple factor | ≤0.5% | |||||
| way of working | 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 maximum charging current is 1.25 times the rated current | ||||||
| Power supply: AC220V ± 10% 50Hz | ||||||
| work environment | Temperature:- 10-40℃ | |||||
| Relative humidity: not exceeding 85% at room temperature of 25 ℃ (no condensation) | ||||||
| Altitude: below 1500 meters | ||||||
Note:
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued.
2. To learn more about Huatian products, please enter the product center. Service Hotline: 400-8855-448
Selection referenceSelection Of 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 |
| Maximum test voltage kV | 47 | 105 | 135 | 192 | 305 | Greater 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 |
| Maximum test voltage kV | 28 | 90 | 168 | 305 | Greater 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 FeaturesProduct Characteristics
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1. Stable output voltage: High frequency voltage doubling circuit is adopted, and new PWM pulse width modulation technology and voltage current dual loop feedback technology are applied to improve power regulation and load regulation, resulting in high voltage stability and low ripple.
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2. Comprehensive protection: It 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.
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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 the 0.75U state, which is beneficial for testing zinc oxide lightning arresters.
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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.
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5. Overvoltage setting: The overvoltage setting uses a digital dip switch, which is easy to operate and has high setting accuracy.
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6. Integrated design: Adopting an integrated design scheme, the host and the pressure doubler are placed in one chassis. Imported high-frequency and high-voltage rectifier diodes are selected to make the voltage doubler compact in size, improve overall efficiency, and facilitate portability.
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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.
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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 videoProduct Video
Product AtlasProduct Picture
Product Attachment Diagram
Instrument host
High pressure multiplier cylinder
Microampere meter
discharging rod
current limit resistor
High voltage line (with shielding)
power line
Special four core connecting wire
ground wire
fuse
Instruction manual, inspection report, certificate of conformity
Product detail diagram
appearance
panel
Overvoltage setting
Wiring hole
button
Digital display screen voltage and current
Digital display screen voltage and current
Voltage adjustment knob
Production process diagram
On site production drawing 1
On site production drawing 2
On site production drawing 3
On site production drawing 4
product certificateProduct Certificate
Our company's products are strictly produced in accordance with international and national standards and industry regulations. They have passed the testing of national, provincial, and municipal power research institutes, measurement centers, and authoritative power departments, and have fully passed the ISO9001 international quality management system certification, the People's Republic of China manufacturing measuring instrument license, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, and GB/T45001-2020 occupational health and safety management system requirements.
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