Ground Resistance Tester For Loop
- Wrindu
- Shanghai, China
- about 25 days
- 5000 set/month
- RDHL-200A
The RDHL-200A Ground Resistance Tester For Loop is a high-precision, digital instrument developed by our company in line with IEC standards. Utilizing high-frequency, high-power constant current switching technology, it accurately measures micro-ohm contact resistance and is ideal for testing switchgear, cables, and welds.
Description
The RDHL-200A loop resistance tester is a cutting-edge, digitally enhanced instrument engineered to comply with international (IEC) and national (DL/T845.4-2004) electrical standards. Leveraging our technical expertise, this device utilizes high-frequency, high-power constant current switching technology to deliver precise measurements of micro-ohm contact resistance.
Ideal for a range of applications, including the assessment of contact and loop resistance in various switches, appliances, as well as the contact resistance in cables, wires, and welds, the RDHL-200A boasts accurate and consistent performance. It is designed to meet the rigorous demands of on-site high-voltage switch maintenance by electrical power and supply departments, as well as for factory testing of high-voltage switch loop resistance.
Features
Comprehensive Protection: The tester includes various protective functions to ensure safe operation, such as protection against back EMF impact, automatic disconnection during tests, and prevention of power supply overheating. It reliably safeguards the instrument from back EMF effects and triggers an alarm to alert the user.
Intelligent Power Saving: Incorporating intelligent power management technology, the RDHL-200A operates in a minimal power state, conserving energy and reducing heat generation for prolonged use.
Versatile Measurement: With a high output voltage and a broad measuring range, this tester caters to a wide array of resistance measurement needs.
Effortless Testing: The RDHL-200A utilizes a high-precision, high-current constant current power supply, eliminating the need for manual current adjustment. This feature ensures swift and precise testing every time.
Accurate Results: By employing a four-terminal connection method, the influence of test lead resistance on measurement accuracy is effectively negated.
Intuitive Display: A seven-inch, high-brightness touch color LCD provides clear visibility even in bright conditions, and the full touch screen operation enhances user-friendliness.
Data Retention: The instrument is equipped with its own calendar clock and power-off storage, capable of retaining up to 1000 sets of test data for later reference.
Flexible Communication: For seamless data transfer and storage, the RDHL-200A offers Bluetooth communication, RS232 communication, and USB interfaces, facilitating computer communication and USB data storage.
Parameters
| Model | RDHL-100A | RDHL-200A |
| Test Current | 50A, 100A | 50A, 100A, 150A, 200A |
| Range | 0～100mΩ(50A) 0～50mΩ(100A) | 0～100mΩ(50A) 0～50mΩ(100A) 0～25mΩ(150A) 0～20mΩ(200A) |
| Resolution | Minimum 0.1µΩ | |
| Accuracy | ±(0.5%±2 digits) | |
| Power | 1000W | |
| Working Mode | Continuous measurement | |
| Working Power Supply | AC220V±10% 50HZ | |
| Service Temperature | 0～40℃ | |
| Relative Humidity | < 90%, no condensation | |
