Product Introduction:
Transformer DC resistance testing is essential during delivery, installation, and handover inspections for both semi-finished and finished transformers. It is also an indispensable part of preventive maintenance testing in the power sector. This testing helps identify manufacturing defects such as issues with coil materials, welding quality, loose connections, missing strands, and disconnections, while also enabling early prediction of potential hidden dangers after the transformer is put into operation.
This DC Resistance Tester has been developed by leveraging our full technical advantages to meet the growing demand for rapid measurement of transformer DC resistance. Integrating three-phase test capabilities (supporting Yn, Y, and △ connections) along with a built-in degaussing function, this new-generation quick-testing device is ideal for measuring DC resistance in large transformers.
Featuring a large true-color high-resolution LCD screen with full-touch operation, the instrument offers a simple and intuitive user experience for on-site applications. It delivers fast testing speed, high accuracy, and a wide measurement range.
مواصفات المنتج
1. Comprehensive Three-Phase Testing: Supports testing of Yn-type, Y-type, and △-type windings using a unified three-phase method, with automatic calculation of the unbalance rate.
2. Wide Application Range: With a maximum output current of 20A and a measurement range of 0–200Ω, combined with an integrated degaussing function, the instrument meets numerous on-site and off-site test requirements for virtually all transformer types.
3. Intelligent Stability Judgment: During testing, the resistance change rate within 5s, 15s, and 30s is automatically calculated, assisting operators in judging data stability and preventing misreading.
3.1 Comprehensive Protection: Features multiple protections against back electromotive force, disconnection, and power failure, ensuring safe and reliable operation.
3.2 Data Storage and Printing: Equipped with a thermal printer, supports local storage of up to 200 test data items, and enables mass data storage via USB disk.
3.3 User-Friendly Interface: Provides a comfortable and convenient user experience with a fresh and simple 7-inch industrial true-color screen, supporting full-touch operation for intuitive control.
المعايير الفنية
Technical Indicators | |
التيار الخارج | Single Phase: 20A, 10A, 5A, 1A, 0.1A |
نطاق القياس | Single Phase: Gear 20A 0.5mΩ~ 1 Ω Gear 10A 1.0mΩ~ 2 Ω Gear 5 A 10 mΩ~ 4 Ω Gear 1 A 0.1Ω~ 20Ω Gear 0.1A 2.0Ω~ 200ΩThree Phase: Gear 10A + 10A 0.5mΩ ~ 0.8 Ω Gear 5 A + 5 A 10 mΩ ~ 1.6 Ω Gear 1 A + 1 A 0.1 Ω ~ 8.0 Ω Gear 0.1A+0.1A 2.0 Ω ~ 80 Ω |
دقة | ±(Accuracy×0.2%+2) |
مزود الطاقة | AC220V±10%, 50/60Hz |
درجة حرارة | -10ºC~50ºC |
الرطوبة النسبية | <90%, non-condensing |
البعد | 400mm×315mm×223mm |
وزن | 9 kg |
1. For testing winding of no-load regulating transformers, don't switch off no-load tap changer during tests or power discharging.
2. Don't disconnect test wires and cut off power switch during tests or power discharging.
3. During transformer tests, winding of the non-test side must be in open circuit.
After-sales service
1. Warranty card is included in the delivery of this product, so during delivery, please check the product carefully on the spot. If defects are found, please fill in the warranty card carefully.
2. Buyers enjoy lifelong maintenance from the date of purchase. They can show its warranty card for free repairing if problems happen within warranty period, otherwise, they have to pay for repairing and commissioning.
3. The following conditions are not in warranty:
Products are disassembled or their structure is changed by users deliberately.
Products are seriously damaged due to users' improper storage or use.
Products are damaged for other reasons on user side.
