Product Introduction
Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.With the continuous advancement and expansion of modern technology, higher demands are being placed on the reliability of power systems and high-voltage equipment. Accidents or damage to electrical equipment are often closely related to insulation defects. As electrical equipment tends to have larger capacity, higher voltage, diversified structures, and improved sealing, new and more stringent requirements have emerged for insulation testing. Under such circumstances, ordinary megohmmeters are no longer sufficient to detect the insulation performance of large-capacity equipment.
Power test procedures require a series of insulation performance tests for various power equipment, including cables, motors, generators, transformers, voltage transformers, high-voltage switches, and lightning arresters. The first and most fundamental test among these is the insulation resistance test.
When testing the insulation resistance of large-capacity power equipment, the measured resistance value is closely related to the pressurization time: the longer the pressurization time, the higher the insulation resistance value. This phenomenon is known as insulation absorption. To properly evaluate the insulation performance of the equipment under test, it is essential to first perform the absorption ratio and polarization index tests. These tests provide a critical safety foundation for subsequent insulation performance assessments, such as leakage current, dielectric loss, partial discharge, and other diagnostic tests.
In accordance with electric power standardization regulations, our company proudly introduces the BC2010 Insulation Resistance Tester. Featuring large capacity, high anti-interference capability, and stable performance, this tester is specifically designed to perform insulation resistance, absorption ratio, and polarization index tests on power equipment. It delivers accurate early-stage diagnostic information, providing essential support for the entire series of insulation tests.
 |  |  |
Product functions
Insulation resistance testing
By outputting a DC test voltage of 500V to 5000V, measures the insulation resistance of electrical equipment to determine whether insulation performance is satisfactory.
Absorption ratio testing
Automatically calculates the absorption ratio based on insulation resistance changes at different time intervals, used to determine insulation moisture, aging, and other conditions.
Polarization index (PI) testing
Calculates the PI value through long-term insulation resistance changes, further evaluating the insulation condition of transformers, motors, generators, and other equipment.
Insulation resistance trend indication
Features both analog pointer and digital display, allowing both numerical reading of insulation resistance and visual observation of insulation resistance trends.
Auto-ranging and data calculation
Automatically switches ranges based on measurement results and automatically completes calculations for insulation resistance, absorption ratio, and PI values.
High-voltage safety protection
Provides high-voltage indication during testing, and automatically discharges residual high voltage from the equipment under test after testing is completed, reducing the risk of electric shock.
Technical parameter
| voltagem de saída | CC:-500V, -1000V, -2500V, -5000V | |
| error：±5％FS(FS is the full range value) | ||
| test accuracy range | 1 MΩ~20 MΩ | error：±10％FS(FS is the full range value) |
| 20 MΩ~1000 MΩ | error：±5％FS(FS is the full range value) | |
| 1GΩ ~20GΩ | error：±5％FS(FS is the full range value) | |
| 20GΩ~200GΩ | error：±10％FS(FS is the full range value) | |
| 1T≥200GΩ | error：±20％FS(FS is the full range value) | |
| test range | 500V（0-10GΩ） | |
| 1000V（0-20GΩ） | ||
| 2500V (0-200 GΩ | ||
| 5000V (0-1TΩ) | ||
| digital test and display range | 0-1TΩ | |
| Condições de trabalho | Temperatura ambiental | 0℃-40℃ |
| Humidade relativa | ≤70% UR | |
| power supply range | AC：220V±10%（built-in lithium power supply） | |
| volume and weight | 230mm×190mm×90mm (C×L×A) | |
| <3kg | ||
características do produto
1. The insulation resistance tester has multiple voltage output options of 500V, 1000V, 2500V, and 5000V.The measuring range of Resistance can reach 0 ~ 200G&Omega, the resistance range can be automatically converted and indicated accordingly.
2. Two methods of synchronously displaying insulation resistance values. The mechanical pointer adopts an ultra-thin tension wire structure with strong seismic resistance. The use of mechanical pointers can easily observe the range of insulation resistance changes, and the use of dot matrix LCD screens can guide users in operating instruments and accurately obtain measurement results.
3. A cabeça do medidor mecânico é integrada à tela LCD. Display de escala dupla, conversão automática de faixa. A escala de cores é fácil de ler e possui display LED com as cores correspondentes.
4. Adotando microcontroladores industriais incorporados e sistemas de software operacionais em tempo real. Alto grau de automação e forte capacidade anti-interferência, o instrumento pode calcular automaticamente a taxa de absorção e o índice de polarização sem intervenção manual.
5. A interface de operação é amigável e vários resultados de medição têm função anti-desligamento, que pode armazenar continuamente 20 resultados de medição.
6. Quando o instrumento gera alta tensão, há uma saída de som imediata.
7. Circuito de descarga de alta tensão residual integrado, que pode descarregar automaticamente a alta tensão residual no equipamento testado após o teste.
8. AC/DC de dupla utilização, equipado com bateria recarregável e adaptador AC.
9. O testador de resistência de isolamento adota um design portátil, que é fácil de operar em campo.
10. High voltage short circuit current≥3mA is an ideal testing instrument for measuring the insulation resistance of large transformers, transformers, generators, high-voltage motors, power capacitors, power cables, lightning arresters, etc.
Application Scenarios
Transformer insulation testing
Used for testing the insulation resistance of transformer windings and insulation systems, determining whether issues such as moisture or aging exist.
Motor / generator insulation testing
Used for testing the insulation resistance of motor and generator windings to ground, assisting in evaluating winding insulation condition.
Power cable testing
Used for insulation resistance testing of high-voltage cables to determine whether cable insulation is in good condition.
High-voltage electrical equipment maintenance
Used for insulation performance inspection and preventive testing of high-voltage equipment such as switches, instrument transformers, and surge arresters.
Preventive maintenance of power equipment
Regular testing of insulation resistance, absorption ratio, and PI to identify potential insulation faults through data changes, enabling fault early warning.
Electrical equipment factory / installation acceptance
Used for insulation performance testing after equipment production or installation is completed, confirming whether the equipment meets usage requirements.
On-site fault diagnosis
Used for rapid insulation condition assessment of abnormal electrical equipment in environments such as substations, power plants, and industrial sites.
Frequently Asked Questions
Q: What does this device mainly test?
A: It is mainly used to test the insulation resistance, absorption ratio, and polarization index (PI) of electrical equipment, to evaluate insulation performance and insulation aging condition.
Q: What equipment can be tested?
A: It can be used for electrical equipment such as transformers, motors, generators, power cables, high-voltage switches, instrument transformers, and surge arresters.
Q: What is the measurement accuracy of the instrument?
A: The device combines digital measurement with analog pointer display, making it suitable for insulation condition testing and preventive testing of electrical equipment.
Q: Why are the absorption ratio and polarization index important for electrical equipment testing?
A: After continuous voltage application, the resistance of insulating materials changes over time. The absorption ratio and PI utilize this change to evaluate insulation performance, thereby helping to determine whether the equipment has issues such as moisture, aging, or other insulation abnormalities. They provide more meaningful reference data than measuring a single insulation resistance value alone.
Matters needing attention
1. Confirm the connection and correct and then start the test Note: the tested line ban mopping the floor, "high voltage output" light indicates have high voltage output, At this time strictly prohibited to touch the high-voltage wire! In the process of the test do not pull and plug tested line, so as not to endanger the personal safety and damage the instrument.
2. Battery measurement of instrument internal, Show dimor the boot does not show, undervoltage display light turn on,said battery is low, should promptly shut down the instrument and charging.
3. When the instrument is not used for a long time should be regularly to charge the battery (Two months for once). Frequently check whether the battery liquid leakage, Battery leakage will corrosion and damage the instrument .
4. Instrument stored in a dry, clean, no corrosive gas environment.
5. For large capacity load test, the tested finish have enough time discharge, the discharge is completed can disassemble test line. (Large capacitive load discharge is best for more than 1 minutes)
6. Instruments are not connected to the test product, Insulation resistance measured value is generally greater than T (1T=1000G), this value is generally random infinite values, like tested air, It is not practical.
7. If the instrument failure, Should be invited to professional repair personnel or send to the company repair, shall not be opened instrument, otherwise, the loss caused our company is not responsible for.
