Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of digital high voltage insulation tester in China. If you're going to wholesale durable digital high voltage insulation tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
Digital High Voltage Insulation Tester shares the same robust platform as the NRG2705 but with a higher output voltage (15 kV) and extended resistance range. It also features automatic PI, DAR, and step‑voltage tests. A large backlit LCD, data logging, and USB export are standard. The tester is powered by a rechargeable Li‑ion battery (AC220V charger). Safety features include live‑line detection, automatic discharge, and zero‑start interlock. Operating temperature: 0°C to 40°C, humidity <90% RH, altitude <3000 m.
Product 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 |
Product Advantages
- Highest voltage (15 kV): Suitable for testing 35 kV class cables and large transformers.
- Very wide resistance range: Up to 30 TΩ for excellent resolution on high‑resistance insulation.
- Step‑voltage test: Automatically ramps voltage to detect weak spots in insulation.
- Large memory: Stores 200 test records with date/time stamp.
- Remote control: Optional Bluetooth for wireless operation from a safe distance.
Applications
- Insulation testing of 35 kV and higher voltage power cables
- Condition assessment of large power transformers (rated up to 220 kV)
- Generator and high‑voltage motor insulation testing
- Switchgear and GIS (gas‑insulated switchgear) insulation verification
- Research laboratories for insulation material development
Related Products
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FAQ
Q1: What is the difference between NRG2705 (10 kV) and NRG3045 (15 kV)?
A: The digital High Voltage Insulation Tester provides a higher test voltage (15 kV) and a wider resistance range (up to 30 TΩ), making it better suited for higher voltage equipment (e.g., 35 kV cables).
Q2: Can I perform a step‑voltage test?
A: Yes, the NRG3045 includes an automatic step‑voltage test mode. You can set the start voltage, step increment, and dwell time.
Q3: Is the tester safe to use on live circuits?
A: No. The Digital High Voltage Insulation Tester is for de‑energized equipment only. It includes a live‑line detection feature that prevents the test from starting if voltage >30 V is present on the terminals.
Q4: How do I export data?
A: Connect the tester to a PC via USB. The stored data appears as a virtual drive, and you can copy the CSV files directly.
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