Introduction
The UHV-H200P features an ergonomically designed operating panel, ensuring intuitive and comfortable use in line with common operator habits. It employs high-frequency switching power supply and advanced digital circuit
technology, making it suitable for measuring the circuit resistance of switching control equipment. The instrument supports the nationally recommended DC test current of 100A, enabling direct and accurate circuit resistance
measurement under this condition. Test results are clearly displayed on a large LCD screen, with additional functionalities including data storage, printing output, time setting, and an optional 50A test range for user flexibility.
As the only domestically produced contact resistance tester capable of achieving a 0.01μΩ resolution with high stability, its performance surpasses that of imported high-current micro-ohmmeters. The device fully meets the
requirements for high-voltage switch maintenance and circuit resistance testing in power and electrical supply applications.
Application
UHV-H200P Contact Resistance Tester is suitable for precision measurement for high/low voltage switches contact resistance and cable/line DC resistance. It also applies to other test occasions that need high current and micro
resistivity.
Technical Parameters
| Measuring range | 50A 0～10mΩ |
| 100A 0～5mΩ | |
| 150A 0～3.333mΩ | |
| 200A 0～2.500mΩ | |
| Resolution | 0～99.99μΩ, 0.01μΩ |
| 100.0～10000.0μΩ，0.1μΩ | |
| Test current | DC 50A, 100A, 150A, 200A four-speed fixed output |
| measurement accuracy | ±(0.5% rd+2d) |
| Operating Time Options | Quick, 10s, 30s, 60s |
| Display method | 4-inch touchscreen |
| communication mode | U disk dump |
| Working power | AC220V±10% 50Hz |
| Total power | 1000W |
| Maximum storage record | 200 |
| working environment | Temperature: -10°C~40°C, humidity: ≤80%RH |
| Dimensions | 390×300×200 mm3 |
| Weight | 7kg(No attachments) |
Features
1、High Current Output: The circuit resistance automatic tester adopts advanced power technology, enabling continuous and prolonged output of high current. This overcomes the limitations of impulse power supplies that
rely on instantaneous current, effectively breaking down the oxide film on switch contacts to achieve reliable and accurate test results.
2、Excellent Stability: Under severe interference conditions, the last digit of the LCD display remains stable within a range of ±1 count, ensuring stable readings and outstanding repeatability.
3、High Precision: Utilizing dual high-speed 16-bit Σ-Δ AD sampling and advanced digital signal processing technology, the instrument achieves a maximum resolution of 0.01μΩ. It is one of the most stable contact resistance
testers currently available in China with this level of resolution, with performance exceeding that of imported high-current micro-ohmmeters.
4、Intelligent Operation: Equipped with an imported high-performance CPU, the system automatically switches measurement ranges based on signal amplitude to ensure testing accuracy. The built-in over-temperature
protection circuit automatically stops the current output when the instrument exceeds the set temperature, guaranteeing safe operation.
5、Premium Quality: All key components are imported. The ingeniously designed temperature compensation circuit effectively eliminates the influence of ambient temperature on measurement results, while the use of military
grade connectors enhances resistance to vibration.
6、Powerful Functions: The test current is freely selectable among 50A, 100A, 150A, and 200A. The test duration can be chosen from FAST mode, 10 seconds, 30 seconds, 60 seconds, or set arbitrarily. This performance far
surpasses that of other similar instruments.
7、User-Friendly Interface: The touch-screen interface allows for convenient and quick operation. Users can independently set the instrument's date and time, save measurement data in real time, and print results directly.
8、USB Data Transfer: Measurement data can be transferred to a USB flash drive via the USB interface. Combined with PC software, the data can be further analyzed and processed.
9、Portable Design: Compact, lightweight, and easy to carry, making it ideal for on-site testing applications.
