Product Introduction
The portable withstand voltage tester is a specialized testing device used for inspecting the insulation withstand voltage performance of electrical equipment, electrical products, and electronic components. The instrument applies a preset AC or DC high voltage to the product under test during the dielectric withstand voltage test, while simultaneously monitoring leakage current changes, in order to determine whether the insulation performance of the product meets safety standard requirements.
Product functions
Leakage current precise detection function
During the test, the leakage current variation of the device under test is monitored in real time, and the test results are automatically judged based on preset limits, enabling rapid identification of insulation performance abnormalities and improving product safety.
Unique sampling design with arbitrarily presettable alarm current value
The instrument adopts a unique high-precision current sampling technology, enabling real-time monitoring of leakage current variations in the product under test during the withstand voltage test. Users can freely set the alarm current threshold according to the safety standards and testing requirements of different products. When the leakage current exceeds the preset value, the device will immediately trigger an alarm and cut off the high-voltage output, effectively improving testing accuracy and safety.
Multiple protection functions
The device is equipped with a variety of built-in safety protection measures, including overcurrent protection, leakage current limit protection, and high-voltage output abnormality protection. When abnormal conditions occur during testing, the instrument responds quickly and automatically cuts off the high-voltage output, preventing equipment damage and safety incidents, providing operators with a safer and more reliable testing environment.
características do produto
1. Equipped with high-brightness digital tube display, offering wide viewing angles and clear, easy-to-read visibility.
2. Capable of real-time monitoring and display of both leakage current and test voltage during operation.
3. Features preset timing with countdown display, automatically shutting off output voltage upon timeout for safe test interruption.
4. Allows arbitrary preset alarm current threshold; triggers audible and visual alarms when leakage current exceeds the set value, prompting test result recording.
5. Delivers 50Hz sine wave output with stable and reliable waveform quality.
6. All critical components utilize imported elements, ensuring high measurement accuracy and extended service life.
7. Designed with a one-piece chassis for compact size, lightweight construction, and excellent portability.
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Parâmetros técnicos
| Test voltage | AC: 0.5 kV~5kV ±5% | |
| Leakage current setting value | AC: 0.2~200(mA) set arbitrarily | |
| Leakage current setting accuracy | ±5% | |
| Output waveform | 50Hz sinusoidal waveform | |
| Output power | 1000VA | |
| Time control | 1~99(s)±5% manual control∞ arbitrary preset | |
| Power supply voltage | AC: 220V±10% 50Hz±2Hz | |
| Environmental requirements | relative humidity≤ 75%RH | |
| ambient temperature: 0°C~40°C | ||
| Consumo de energia | static power consumption<30VA | |
Application Scenarios
Maintenance of high-voltage electrical equipment in industrial enterprises — Suitable for industrial enterprises such as steel, petrochemical, mining, and cement industries, conduct preventive withstand voltage testing on high-voltage motors, busbars, switchgear, and power cables to promptly identify insulation aging and potential defects.
Commissioning of electrical equipment in new energy power plants — During construction, operation, and maintenance of wind farms, photovoltaic plants, and energy storage stations, perform withstand voltage testing on box-type substations, collector lines, step-up equipment, and cable systems to ensure safe and stable equipment operation.
Inspection of power supply equipment in rail transit — Used in urban rail transit and railway power supply systems, conduct on-site withstand voltage testing on traction substations, high-voltage switchgear, power cables, and related insulation equipment to ensure power supply system reliability.
Power maintenance and emergency repair — After major overhaul, retrofitting, or fault repair of power grid equipment, perform rapid withstand voltage verification on replaced or repaired high-voltage equipment to confirm safe operating status and shorten outage time.
Electrical equipment manufacturing and factory inspection — Suitable for production testing of high-voltage switchgear, cable accessories, insulation components, and other power equipment, serving as an important testing method for factory inspection and quality control.
FAQ bout Portable Hipot Tester
Q: What is a portable withstand voltage tester, and what is it mainly used for?
A: A portable withstand voltage tester is an on-site testing device used to verify the insulation performance of high-voltage electrical equipment. It can perform AC withstand voltage tests before equipment commissioning, after maintenance, or during routine periodic maintenance. Due to its compact structure and convenient transportability, it is widely used for on-site testing in power, industrial, new energy, rail transit, and other fields.
Q: How to select a portable withstand voltage tester suitable for project requirements?
A: When selecting a model, comprehensive consideration should be given to the rated voltage of the equipment under test, test capacity, equipment type, on-site power supply conditions, and possible future testing requirements. At the same time, attention should also be paid to the device's expandability, control method, and data management functions to meet long-term usage needs.
Q: What are the advantages of the portable withstand voltage tester compared with traditional withstand voltage equipment?
A: The portable withstand voltage tester features a modular design, is lightweight and easy to transport, and can be quickly set up on site. Compared with traditional large equipment, it occupies less space and is suitable for on-site testing environments such as substations, factories, and wind farms, significantly improving test efficiency.
