Product introduction
Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.The digital insulation resistance tester is a professional testing instrument used for insulation performance testing of electrical equipment and electrical circuits. It is mainly used to measure insulation resistance between equipment and ground, as well as between phases, helping to determine the insulation condition of electrical equipment and ensuring the safe and stable operation of power systems and related electrical equipment.
The instrument features a high-performance test circuit design, with advantages including high output power, strong load capacity, strong anti-interference capability, and a wide measurement range. It supports multiple test voltages of 100V, 250V, 500V, and 1000V, with an insulation resistance measurement range up to 19990MΩ. It is suitable for various insulation testing scenarios in power, industrial, electrical equipment maintenance, and on-site repair applications.
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Product functions
Insulation resistance testing
Used for testing the insulation performance of electrical equipment and circuits, determining whether the insulation condition is normal.
Multiple test voltage levels
Supports four test voltage levels: 100V, 250V, 500V, and 1000V, adaptable to equipment of different voltage ratings.
High-resistance insulation measurement
Insulation resistance measurement range up to 19990MΩ, suitable for high-resistance insulation testing.
Phase-to-phase insulation testing
Can test the insulation resistance between different phase conductors of electrical equipment.
Ground insulation testing
Can test the insulation performance between electrical equipment or circuits and ground.
Auto-ranging measurement
Automatically selects the appropriate range based on the measured insulation resistance value, simplifying on-site operation.
Anti-electromagnetic interference
Uses shielding structure, guard ring, and filtering technology to improve test stability and accuracy in complex electromagnetic environments.
Capacitive load testing
Features strong output capability, suitable for insulation testing of electrical equipment with capacitive characteristics.
Parâmetros técnicos
Condições de trabalho | Temperatura ambiente：0℃～+45℃ |
humidade relativa：≤85% | |
nível de tensão de saída | 100 V，250 V，500 V，1000V |
faixa de medição | 0～19990MOh |
taxa de resolução | 0,01 milhãoOh,0,1 milhãoOh,1,0 milhãoOh,10,0 milhõesOh |
erro relativo | 0～2.000 milhõesΩ≤±5%±2d 2.000 milhõesAh~19990MΩ≤10%±2d |
Tensão/carga | 1000V/20MOh |
Queda de voltagem | cerca de 10% |
corrente de curto-circuito | ＞1,6mA |
corrente direta | 8×1,5V(AA，R6)bateria |
corrente alternada | 220V/50Hz |
Consumo de energia | dissipação quiescente≤160mW；força maxima≤2,5 W |
volume | 235×200×135mm3 |
peso | ＜1,4kg |
Nickname: Insulation Resistance Meter; Digital Insulation Resistance Meter
Características
1. High output power, strong load ability, and strong anti-interference ability. The shell body is made of aldural/high-strength aluminum alloy, equipped with potential protection ring and fourth-order active low pass filter; it can play an effective role in shielding external power frequency and strong electromagnetic field. For the measurement of capacitive specimen, since the short-circuit current is greater than 1.6mA, it’s easy to rise the test voltage to the rating of output voltage. For the measurement of low resistance, it will not affect the test by using scaling method.
2. O medidor é alimentado por bateria e a faixa de medição é convertida automaticamente. O painel de fácil leitura e o display LCD tornam a medição muito conveniente e rápida.
3. A corrente de curto-circuito de saída do medidor pode ser medida imediatamente sem estimativa.
Application Scenarios
Substation equipment insulation testing
Used for insulation resistance testing of transformers, switchgear, circuit breakers, instrument transformers, and other equipment.
Distribution system insulation testing
Tests the ground and phase-to-phase insulation performance of distribution cabinets, distribution lines, busbars, and other equipment.
Power cable insulation testing
Used for insulation condition testing of power cables, control cables, and other lines, determining whether there is moisture, aging, or insulation damage.
Motor insulation testing
Used for insulation resistance testing of motor windings to ground and between windings, commonly used in motor maintenance and repair.
Generator insulation testing
Tests the insulation performance of generator windings, assisting in determining whether winding insulation is normal.
Transformer insulation testing
Used for insulation resistance testing of transformer windings and related insulation components, assisting in evaluating insulation aging and moisture conditions.
Electrical equipment installation acceptance
After new equipment installation is completed, insulation resistance testing confirms whether the equipment and circuits meet insulation requirements before commissioning.
Equipment preventive maintenance
Regularly tests insulation resistance changes, identifies trends of insulation performance degradation through historical data, and schedules maintenance in advance.
Electrical fault diagnosis
When abnormal conditions such as leakage or tripping occur in circuits or equipment, insulation resistance testing can assist in locating insulation issues.
Industrial production equipment maintenance
Suitable for insulation condition testing of motors, control cabinets, distribution equipment, production line electrical systems, and other equipment in factories.
Frequently Asked Questions
Q: What is the difference between a digital insulation resistance tester and a regular multimeter for insulation resistance testing?
A: A regular multimeter is mainly used for conventional measurements such as low resistance, continuity, voltage, and current. Its test voltage is typically insufficient to effectively evaluate high-resistance insulation systems. A digital insulation resistance tester, on the other hand, uses a dedicated DC high-voltage test circuit that can provide test voltages of 100V, 250V, 500V, 1000V, and more, and can measure insulation resistance up to the GΩ level. Therefore, it is more suitable for professional insulation condition assessment of electrical equipment.
Q: What types of equipment can the digital insulation resistance tester test?
A: The digital insulation resistance tester is suitable for a variety of electrical equipment and circuits, including power cables, control cables, motors, generators, transformers, switchgear, distribution equipment, and other electrical systems requiring insulation performance inspection. During actual testing, the appropriate test voltage and test method can be selected based on the equipment's rated voltage, insulation structure, and relevant test standards.
Q: Can the digital insulation resistance tester be used for insulation testing of power cables?
A: Yes. Power cables are one of the typical applications of the digital insulation resistance tester. It can be used to check the insulation condition between the cable conductor and ground, as well as between different conductors. For long-distance, high-capacitance cables, charging current and stabilization time should be considered during testing, and the test should be carried out in accordance with relevant cable testing standards. Insulation resistance testing is a basic insulation check and cannot replace all types of cable withstand voltage or diagnostic tests.
