Product introduction
A DC hipot testing equipment is an electronic device used to generate a high-voltage DC electric field. The DC hipot testing equipment usually consists of a DC power supply and a transformer, and uses circuits such as rectifiers, filters, and regulators to maintain the accuracy and stability of the output voltage. The main function of a DC high-voltage generator is to generate a high-voltage electric field to drive the operation of other electronic devices
Technical Parameters
| Specifications | 200/2 | 200/3 | 200/5 | 300/2 | 300/3 | 300/5 | 400/2 | 400/3 | 400/5 |
| Rated voltage(kV) | 200 | 200 | 200 | 300 | 300 | 300 | 400 | 400 | 400 |
| Rated current(mA) | 2 | 3 | 5 | 2 | 3 | 5 | 2 | 3 | 5 |
| rated power(W) | 400 | 600 | 1000 | 600 | 900 | 1500 | 800 | 1200 | 2000 |
| Control box quality(kg) | 5.5 | 6.0 | 6.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.8 |
| Pressure cylinder quality(kg) | 8.7 | 9 | 9 | 24 | 24 | 24.5 | 33.5 | 33.5 | 33.5 |
| Double cylinder height(mm) | 970 | 970 | 970 | 1250 | 1250 | 1250 | 1650 | 1650 | 1650 |
Voltage accuracy : ±(1.0%Reading + 2 words)
Current accuracy : ±(1.0%Reading + 2 words)
Ripple coefficient : ≤0.5%
Voltage stability : When the power supply voltage changes by ±10%≤1%
Power supply : Single phase communication 50Hz 220V±10%
Technical features and advantages of DC hipot tester
1. Stable output: Using high-frequency voltage doubling circuit or intermediate frequency inverter technology, the voltage fluctuation is small and the testing accuracy is high.
2. Powerful protection function: equipped with overvoltage, overcurrent, zero start, grounding protection, etc., to ensure operational safety.
3. Portability and Integration: The miniaturized design facilitates on-site use, and some models integrate control, measurement, and protection functions into one.
Core application scenarios of DC hipot testing equipment
1. Zinc oxide lightning arrester testing: This is one of its most commonly used scenarios, which measures the leakage current of the lightning arrester at a DC reference voltage (U1mA) and at 0.75 times the reference voltage to determine whether the lightning arrester is damp, aging, or has internal defects. High quality equipment has a one click testing function of 0.75UDC1mA, which can automatically complete voltage regulation and data recording, greatly improving testing efficiency.
2. Power cable testing: Conducting DC withstand voltage tests and leakage current detection on 6-500kV XLPE cables is an important means of discovering defects such as dendritic aging and local damage to cable insulation. During testing, it is necessary to select equipment with appropriate current capacity based on the cable length and capacitance to avoid affecting the testing results due to insufficient current.
3. Transformer and generator testing: Conduct DC withstand voltage tests on transformer windings and generator stator windings to check the insulation strength of the windings, identify issues such as insulation moisture and damage, and avoid insulation breakdown accidents during equipment operation.
4. Research and production testing: used as a charging power source for impulse voltage generators and impulse current generators, or for factory high-voltage component factory withstand voltage testing, to meet the high-voltage testing needs in research and production processes.
Frequently Asked Questions
Q1: What are the most common safety hazards that occur during the testing process of a DC hipot testing equipment?
A1: Mainly includes high-voltage electric shock, insulation breakdown, fire, and equipment failure. Be sure to strictly follow the safety operating procedures.
Q2: What is the impact of the output voltage ripple coefficient of the DC hipot testing equipment on the test?
A2: The higher the ripple coefficient, the greater the fluctuation of the output voltage, which may lead to inaccurate test results, especially in precision tests that require extremely high voltage stability.
Q3: How to choose a DC hipot testing equipment suitable for cable withstand voltage testing?
A3: It is necessary to calculate the required test voltage and capacity based on parameters such as cable length, cross-sectional area, and insulation level, and consider a certain margin.
Q4: Can a DC high-voltage generator be used for AC withstand voltage testing?
A4: Normally, DC high-voltage generators can only be used for DC withstand voltage tests. If an AC voltage withstand test is required, an AC high-voltage generator should be used.
Q5: Where can I buy a DC hipot teser suitable for lightning arrester detection?
A5: Wuhan UHV Power Technology Co., Ltd. provides various types of DC hipot testers suitable for lightning arrester detection, with complete specifications and stable performance. At the same time, it provides professional technical support and after-sales service, which is a trustworthy choice.
We are a professional DC Hipot Testing Equipment manufacturers in China.We can provide the best professional DC Hipot Testing Equipment for sales and competitive price. If you are looking for DC Hipot Testing Equipment supplier, we are a good choice.
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