Complaint
The DC resistance of transformers is a necessary test item for semi-finished and finished products in transformer manufacturing, including factory testing, installation, overhaul, change of tap changer, handover testing, and preventive testing by the power department. It can check the welding quality of the winding joints and whether there is any inter turn short circuit in the winding. It can also check whether the contact at various positions of the voltage tap changer is good, whether the actual position of the tap changer matches the indicated position, whether the outgoing wire is broken, and whether there are broken strands when multiple wires are wound together. In order to meet the needs of rapid measurement of transformer DC resistance, our company has developed the HVD-ZRS50A DC resistance tester. This instrument adopts a new power supply technology, which has the characteristics of small size, light weight, high output current, good repeatability, strong anti-interference ability, and complete protection functions. The entire machine is controlled by a high-speed microcontroller, with a high degree of automation and automatic discharge and discharge alarm functions. The instrument has high testing accuracy, simple operation, and can achieve rapid measurement of transformer direct resistance.
1. The entire machine is controlled by a high-speed microcontroller, with a high degree of automation and easy operation.
2. The instrument adopts a new power supply technology with multiple current levels and a wide measurement range, which can be automatically selected according to the load Select current, suitable for DC resistance measurement of small and medium-sized transformers and voltage transformers.
3.The protection function is complete, which can reliably protect the impact of back electromotive force on the instrument, and the performance is more reliable.
4.Equipped with audible discharge alarm, clear discharge indication, reducing misoperation.
5. Fast response speed.
6. Intelligent power management technology ensures that the instrument operates at the minimum power state, effectively saving energy and reducing heat generation.
7. 65K True Color LCD with 480X272 Dot Matrix and Ultra Small Pixels,
8. The instrument comes with a perpetual calendar clock and power down storage, which can store 1000 sets of test data and can be viewed at any time.
9. The instrument is equipped with RS232 and USB interfaces, which can communicate with computers and store on a USB drive
10. Equipped with a panel mounted micro printer, which can print measurement results.
| Test Current | <20mA, 1A, 2.5A, 5A, 10A, 20A,40A,50A |
| Measurement range | 40μΩ~400mΩ (50A) 100μΩ~1Ω (20A) 500μΩ~2Ω (10A) 1mΩ~4Ω (5A) 2mΩ~8Ω (2.5A) 10Ω-20KΩ (<20mA) |
| minimum resolution | 0.1μΩ |
| displayed | liquid crystal display |
| data storage | 1,000 |
| working environment | Ambient temperature:0ºC~40ºC Relative humidity: <90%RH, no condensation |
| power | AC 220V±10V, 50Hz±1 Hz |
| Maximum power consumption | 500W |
| Overall Dimension | Main unit: 405×230×355 (mm) Wire box: 360×260×180 (mm) |
| Weight | Main body 15KG Cable box: 5.75KG |
| Test Lead Length | Standard 13 meters, length can be customized |
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
