Product Description
The loop resistance tester, also known as the micro-ohmmeter and contact resistance tester, is an instrument developed by our company for measuring various high-voltage switches, high-voltage circuit breakers, metal welding components, metal conductor loop resistance, and precision micro-ohm resistance.
1. This instrument has a built-in large-capacity rechargeable lithium battery to generate ripple-free DC current, with a maximum output of 220A. The output current can be fine-tuned in 2.5A steps, with up to 87 current gears, which can meet the test of multiple current gears;
2. At the same time, the time (10s, 20s, 30s, 40s, 50s, 60s) can be set to continuously output large current tests, and high-precision, high-stability, and high-intelligence tests can still be performed in a strong interference environment;
3. It has open circuit protection, overheating protection and other functions.
4. The instrument uses a 5.6-inch color LCD display and an English operation interface.
5. The standard resistance of the system can be self-checked before the formal test to ensure accuracy.
6. Wide range, large data storage capacity, strong anti-interference ability, simple operation, handheld, and easy to carry. An optional printer is also available for data printing.
| Function | Contact resistance tests of high-voltage switches and circuit breakers; connection resistance tests of metallic welding components; circuit resistance tests of conductors; precise low resistance tests. |
| Power | Built-in 12.6V 9000mAh rechargeable lithium battery |
| Measurement Method | 4-wire measurement |
| Charger | 12.6V/2A |
| Display | 5.6-inch industrial LCD with high-brightness color |
| Test Interface | I+, I-, U+, U- |
| Output Current | ≤5A, 10A, 30A, 50A, 80A, 100A, 200A, 220A |
| Step Current: 2.5A, up to 87 current gears. |
Measurement Range
| ≤5A : | 1μΩ~3500mΩ |
| 10A : | 0.1μΩ~200mΩ |
| 30A: | 0.1μΩ~20mΩ |
| 50A: | 0.01μΩ~15mΩ |
| 80A: | 0.01μΩ~10mΩ |
| 100A: | 0.01μΩ~5mΩ |
| 200A : | 0.01μΩ~600uΩ |
| 220A : | 0.01μΩ~500uΩ |
| Resolution | 0.01μΩ |
| Accuracy | 30A~220A
±(reading*0.1%+measurement range*0.2%+1μΩ)
10A or less than 5A
±(reading*0.5%+measurement range*0.2%+10μΩ) |
| Measurement Time | ≤100A:fast mode(recommend),10s, 20s, 30s, 40s,50s, 60s
>100A:fast mode |
| Printer | Optional, press the print button to print the test results |
| Data Storage | After the completion of the test, the data is automatically and cyclically saved with up to 999 sets of data stored. |
| Size of the instrument | L188mm×W85mm×H312mm |
| Size of Outer Package | Appro L550mm×W420mm×H215mm |
| Test Leads | Weight of the instrument: appro 2.2kg |
| Total Weight: appro 9.3kg |
| Test Leads | Standard Length: 3m (5m is optional) |
| Connecting the test leads to the current port and voltage port with a resistance of less than 10mΩ |
| Safety Standard | IEC61010-1, CAT 600V,Pollution Level 2, JJG724-1991 Verification Regulation of DC Digital Ohmmeter, JJG166-1993 Verification Regulation of DC Resistors, DL/T967-2005Verification regulation of loop resistance tester and DC resistance high-speed tester. |
