Product Overview
This instrument was developed in accordance with the "Preventive Testing Procedures for Electrical Safety Tools and Equipment" and is used to assess whether the contact between the grounding wire lug and the bus clamp and the multi-strand copper flexible conductor is good.
This instrument employs the DC voltage-current proportional method and consists of a low-voltage, high-current constant current source and a measurement system. The constant current source utilizes advanced switching power supply technology, featuring strong anti-interference capabilities and high stability. The measurement section uses an intuitive LCD display, ensuring accurate and reliable measurements, and offering flexible and convenient loop selection and switching operations.
Application
1. The test current is large, fully complying with the relevant national standards for testing contact resistance.
2. It has a high output voltage and a wide measurement range, up to 300mΩ .
3. The test current comes from a high-precision 50A switching constant current power supply, requiring no manual adjustment, and the test is fast and accurate.
4. The four-terminal wiring method effectively eliminates the influence of the test lead resistance on the test results.
5. The test is fast, displaying data in about 3 seconds.
6. The instrument is designed for long-term continuous operation and features an overheat protection circuit, ensuring reliable and stable operation.
7. It is easy to operate, lightweight, and suitable for field operations.
8. The instrument features a perpetual calendar and 99 sets of data storage, and data is not lost when the instrument is turned off.
1. The test current is large, fully complying with the relevant national standards for testing contact resistance.
2. It has a high output voltage and a wide measurement range, up to 300mΩ .
3. The test current comes from a high-precision 50A switching constant current power supply, requiring no manual adjustment, and the test is fast and accurate.
4. The four-terminal wiring method effectively eliminates the influence of the test lead resistance on the test results.
5. The test is fast, displaying data in about 3 seconds.
6. The instrument is designed for long-term continuous operation and features an overheat protection circuit, ensuring reliable and stable operation.
7. It is easy to operate, lightweight, and suitable for field operations.
8. The instrument features a perpetual calendar and 99 sets of data storage, and data is not lost when the instrument is turned off.
| Test current | 30A, 40A, 50A |
| Measuring range | 30A:0~300 mΩ40A:0~200 mΩ50A:0~100 mΩ |
| Minimum resolution | 0.01 μΩ |
| Accuracy | 0.5% ± 0.2µΩ |
| Output voltage | ≤DC10V |
| Working mode | Continuous |
| Power supply | AC220V±10% 50Hz±1Hz |
| Power consumption | ≤600W |
| Operating temperature | -20 ℃~ 40 ℃ |
| Relative humidity | ≤ 80 % RH, no condensation |
| Weight | 8.7kg |
| Dimensions | 350mm × 230mm × 260mm |
We provide you with free consultation services
Engineers provide guidance for installation and commissioning
Technicians can provide on-site maintenance services and receive regular training
Perfect technical consulting service system
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