Digital Display Three Phase Winding Resistance Tester
This Portable Lithium Battery Transformer DC Resistance Tester is a field-oriented testing instrument for measuring DC resistance of medium and low voltage transformer windings (10kV-35kV). Designed for routine maintenance, emergency fault diagnosis and handover inspection in substations, power distribution stations and industrial workshops, it integrates a high-capacity lithium battery and constant current source technology, enabling cable-free operation in field without external power supply.
Key Features
- Dual Power Supply & Long Battery Life: AC 220V or built-in lithium battery, 10 hours of continuous work after full charge, suitable for field operation without power
- Fast Test & Auto Discharge: Completes single-phase winding test in 3-5 seconds, with automatic fast discharge after testing to prevent electric shock hazards
- Lightweight & Portable: Net weight only 5.8kg with portable handle, compact size for operation in narrow transformer cabinet spaces
- Bilingual Interface: 7-inch color touch screen with intuitive menu in Chinese and English, one-key test start, no complex professional training required
- Anti-Interference & Data Storage: Equipped with filter circuit to suppress electromagnetic interference; stores 800 groups of test data, exportable via USB
Technical Specifications
| Measurement Items |
Transformer winding DC resistance, phase resistance, interphase resistance |
| Measurement Range |
0.001Ω~2000Ω (automatic range switching) |
| Measurement Accuracy |
±0.2% FS (20mΩ~2000Ω), ±0.5% FS (0.001Ω~20mΩ) |
| Test Current |
DC 1A/5A/10A (automatic matching) |
| Working Power Supply |
AC 220V ±10% 50Hz / 14.8V lithium battery |
| Battery Life |
10 hours continuous work |
| Data Storage/Export |
800 groups / USB 2.0 |
| Protection Functions |
Overcurrent, overvoltage, reverse connection, overheating protection |
| Working Environment |
-20℃~+55℃; Humidity ≤90% RH (no condensation) |
| Size (L*W*H) |
390mm*290mm*150mm |
| Net Weight |
5.8kg |
Manufacturer Information
Sansion Power Electric was established in 2005, with over 20 years of experience in R&D, manufacturing and marketing of power electrical testing products. Our products are widely used in power electric, railroad, energy conservation, environment protection, water conservancy, petrochemical industry, aerospace and other fields.
Our company includes R&D department, instruments manufacturing workshop, HV workshop, sample exhibition room, HV testing laboratory, quality control department, and employs over 80 staff including 20 technical engineers. We have obtained ISO9001 quality system certification and all products strictly conform to international IEC and Chinese state standards.
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Frequently Asked Questions
Q1: Is your company a sales company or a manufacturer?
Sansion Power Electric Co., Ltd. is an industrial and trade enterprise with its own factory, self-produced and self-sold. We were founded in 2005 and have twenty years of production experience. Our company has reliable production lines, test rooms and R&D centers.
Q2: Whether the goods are in stock, whether they can be customized, and how long the delivery time is?
After orders are placed, we can customize products according to customer requirements using the latest technology. Delivery time is typically within 10 working days under normal circumstances.
Q3: Is the quality guaranteed?
To ensure quality, we use imported components extensively. Products undergo three quality inspections before shipment and are packed in non-fumigation wooden boxes for export.
Q4: What are the after-sales terms?
We offer free consulting service, one year warranty, and utilize various methods including email communication, video calls, and on-site technical support to resolve any after-sales problems promptly.
Q5: What are the cooperative countries or regions?
Our products have been successfully exported to the United States, France, Brazil, Australia, Spain, Portugal, Oman, Russia, the Netherlands, Indonesia, Bangladesh, Saudi Arabia, Chile, Colombia, Panama, Malaysia and other countries and regions.
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