Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of high voltage insulation tester in China. If you're going to wholesale durable high voltage insulation tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
Application Scenarios
Over time, under varying environmental conditions and under different load operating conditions, the insulation at different locations within electrical equipment and systems is inevitably affected by factors such as humidity, temperature, oxidation, and corrosion, leading to insulation aging. If this is not detected, it will directly impair the normal operation of the equipment. The High Voltage Insulation Tester provides field technicians with professional and reliable support and supplies the data basis required for further inspection and testing of insulation systems. In particular, in power generation, industrial production, telecommunications, and electrical maintenance, this tester supports preventive maintenance programs and condition assessments.
Technical Parameters
|
Parameter |
Value / Specification |
|
Model |
NRG3045 (15 kV version) |
|
Test voltages |
500 V, 1000 V, 2500 V, 5000 V, 10000 V, 15000 V |
|
Resistance range |
0.01 MΩ – 30 TΩ |
|
Accuracy |
±5% reading (0.1 MΩ – 1 TΩ); ±20% (1 TΩ – 30 TΩ) |
|
Resolution |
0.01 MΩ (low range) to 0.1 GΩ (high range) |
|
Short‑circuit current |
≥5 mA |
|
PI / DAR / step voltage |
Automatic calculation and test sequence |
|
Leakage current range |
0.001 µA – 5 mA |
|
Display |
LCD with backlight, 5‑digit |
|
Data storage |
200 records |
|
Power supply |
Rechargeable Li‑ion battery (AC220V charger) |
|
Battery life |
~7 hours continuous test at 15 kV |
|
Dimensions (W×D×H) |
480 × 405 × 230 mm |
|
Gross weight |
7 kg |
|
Operating temperature |
0°C – 40°C |
|
Operating humidity |
<90% RH |


Products Features
The ES3045 series combines high-voltage capability with practical functions for everyday fieldwork.
01
This product series is available in a variety of models and specifications, allowing technical personnel to select the appropriate product based on the intended use case.
02
This testing device features intelligent operation and convenient portability, offers high reliability, and is capable of withstanding a variety of harsh environments.This testing device features intelligent operation and convenient portability, offers high reliability, and is capable of withstanding a variety of harsh environments.
03
This insulation resistance tester features an automatic power-off function and an adjustable alarm threshold, allowing technicians to set the parameters according to their specific requirements.
04
These functions make the High Voltage Insulation Tester practical for both field inspections and scheduled maintenance. For professionals comparing a High Voltage Insulation Tester with simpler testing equipment, its combined measurement functions and data storage offer added convenience. Overall, this supports efficient testing and more organized maintenance records.
05
FAQ
Q: Which equipment can be tested with this instrument?
A: The ES3045 series can be used to perform insulation resistance testing on most equipment and facilities involved in power system operation, including transformers, motors, and cables, offering a wide range of application areas.
Q: Does the instrument support measurements other than insulation resistance?
A: Yes, in addition to testing insulation resistance, other parameters such as AC voltage, DC voltage, DC current, and capacitance can also be tested.
Q: What safety measures should be followed?
A: When performing insulation resistance tests on high-voltage equipment, operators must receive specialized training. Ensure that the circuit and equipment have been de-energized; operators must wear high-voltage insulating gloves and avoid touching the test leads or exposed conductors during the test. After the test is completed, the test circuit and equipment must be fully discharged to prevent accidental injury.

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