200A High Voltage Loop Resistance Meter Circuit Breaker Contact Resistance Tester
Introduction:
- Contact resistance tester is used to test the contact resistance of circuit breaker or high current cable contacts.
- It is designed according to IEC62271.
- The main application of the tester is measurement of circuit breaker contact resistance.
- All the test results of the tester could be print by the micro-printer which is integrated in the tester.
- Also all the test results saved in the tester could be upload to PC computer and then convert to MS WORD document.
Features:
- Rapid test;
- Result print;
- Upload data to PC;
Specifications:
| No. |
Item Name |
High Voltage Loop Resistance Meter Circuit Breaker Contact Resistance Tester |
| 1 |
Measuring range |
0-1999.9 μΩ Resolution:0.1 μΩ |
| 2 |
Measuring current |
DC 100A, 200A, 400A, 600A for choice |
| 3 |
Measuring precision |
0.5 %RGD+0.05%FS |
| 4 |
Display mode |
LCD |
| 5 |
Data storage |
Save no more than 100 groups of data |
| 6 |
Data connection |
RS232 computer interface |
| 7 |
Rated power supply |
AC220V |
| 8 |
Size |
340mm× 280mm × 210mm |
| 9 |
Environment temperature |
-10 ºC~+40 ºC |
| 10 |
Relative humidity |
<80% |
Product Show:
Four Sets GDHL-200A Contact Resistance Tester Sold to USA
Why does the contact resistance testing need 100A or higher?
The electrical conductivity of the circuit breaker of the switch gear plays an important role in ensuring the safe operation of the switch. The quality of the conductive properties can be reflected by the size of the conductive contact resistance. Therefore, both IEC standards and manufacturers specify that the contact resistance should be measured and that the contact resistance of the various types of switches be clearly defined. In the past, dual-arm bridges were used. Due to the voltage of the bridge, the current is relatively small. When there is impurity or surface oxidation between the moving and stationary contacts of the switch, the data dispersion of the test is large. At the same time, the bridge has poor anti-interference, so the standard stipulation must use more than 100A DC current for testing.
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