Complaint
The DC resistance of transformers is a necessary test item for semi-finished and finished products in transformer manufacturing, including factory testing, installation, handover testing, and preventive testing by the power department. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires in transformer coils, as well as hidden dangers that exist after operation.
In order to meet the needs of rapid measurement of transformer DC resistance, our company has developed a transformer DC resistance tester using our own technological advantages. This instrument is a new generation of fast testing equipment that integrates auxiliary magnetic testing, three-phase testing (Yn, Y, △), and demagnetization functions. It is an ideal equipment for measuring the DC resistance of large power transformers.
The screen adopts a true color large screen high-resolution LCD display screen, with touch control and shuttle knob operation, which is convenient for on-site use. With Chinese menu prompt function, easy and intuitive operation, all direct resistance test items can be completed in one connection, with fast testing speed, high accuracy, and wide range.
| Technical indicators | |
| Output current | Single phase 40A, 20A, 10A, 5A, 1A, 0.2A, 10mA,<1mA Three phase 20A+20A, 10A+10A, 5A+5A, 1A+1A, 0.2A+0.2A |
| measuring range | single-phase 40 A gear 0.1m Ω~0.5 Ω 20 A gear 0.5m Ω~1 Ω 10 A gear 1.0m Ω~2 Ω 5 A gear 10 m Ω~4 Ω 1 A gear 0.1 Ω~20 Ω 0.2 A gear 1.0 Ω~100 Ω 10mA gear 50 Ω~2k Ω<1mA gear 500 Ω~25k Ω three-phase 20A+20A gear 0.2m Ω~0.3 Ω 10A+10A gear 0.5m Ω~0.6 Ω 5 A+5 A gear 10 m Ω~1.5 Ω 1 A+1 A gear 0.1 Ω~7.0 Ω |
| 0.2A+0.2A gear 1.0 Ω~30 Ω | Accuracy |
| ± (reading × 0.2%+2 words) | Working power supply |
| AC220V ± 10%, 50/60Hz | Operating temperature |
| -10 ºC~50 ºC | relative humidity |
| <90%, no condensation | Instrument volume |
| 428mm × 350mm × 230mm | Instrument weight |
1 For Yn type, Y type, and △ type windings, three-phase measurement can be used for testing and the three-phase imbalance rate can be calculated.
2 The maximum output current of the testing power supply is 40A, with a testing range of 0-25k Ω, meeting the testing needs of the vast majority of transformers; And it integrates magnetic assistance and demagnetization functions to meet various needs of on-site testing.
3 The testing process can automatically calculate the change rate of resistance values within 5S, 15S, and 30S, which can assist testers in judging the stability of test data and prevent misreading of data.
4 The instrument has a variety of protection functions such as 380V wrong connection protection, Counter-electromotive force protection, disconnection protection and power off protection, as well as alarm function for grounding wire not connected.
5 The instrument is equipped with a thermal printer, which stores 200 pieces of data locally and supports massive storage on USB drives.
6 Industrial grade 7-inch true color large screen display, designed in a fresh and minimalist display style, with full touch and one click shuttle operation, creating a comfortable and convenient human-computer interaction experience for you.
1.Is your company a sales company or a manufacturer?
We are an industry and trade enterprise, with our own factory and self-production and self-sale. The company was founded in 2005 and has 20 years of production experience. The company has reliable production lines, test laboratories and R&D centers.
2. Whether the goods are in stock, whether they can be customized, and how long the delivery period is.
After the goods are ordered, if there is no accident, it will take about 5 working days for production, and the delivery time is about 30 working days.
3. Is the quality guaranteed?
In order to guarantee the quality, we use a lot of imported parts. After three quality inspections, the goods can be sent out and exported in non-fumigation wooden crates.
4. What are the after-sales terms?
We provide free consulting service with one-year warranty, and adopt various methods such as e-mail communication, video call, technical visit, etc., aiming at solving any after-sale problems in time.
5. What are the cooperative countries or regions?
Our products have been successfully exported to Indonesia, Thailand, Vietnam, India, South Korea, the United States, Brazil, Pakistan, and some countries in Europe and Africa.
Contact Us
Henan High Voltage Electrical Detectiontechnology Co., Ltd.
Address: Building D10-2, Hi-tech Enterprise Accelerator, Bitao Lu, Gaoxin District, Zhengzhou City, Henan Province, China
