Product introduction
The loop resistance tester is a specialized instrument used to measure the contact resistance and circuit resistance of switch control equipment. It is suitable for various fields such as electricity, petrochemicals, transportation, healthcare, etc. The loop resistance tester manufacturer measures accurately and has stable performance, meeting the requirements of on-site high-voltage switch maintenance and high-voltage switch factory circuit resistance testing for power and supply departments.
Product Parameters
| Measuring range | 1～1999μΩ |
| Resolution | 1μΩ |
| Test current | DC 100A fixed output |
| Accuracy | 0.5%±1d |
| Operating mode | Continuous |
| Display mode | 3.5-digit LED display |
| Power supply | AC220V±10% 50Hz |
| Working environment | Temperature: -10℃~40℃, humidity: ≤80%RH |
| Diemension | 390×300×150mm3 |
| Weight | 6kg(excluding attachments) |
Transportation and storage
1. Transportation
When the loop resistance tester supplier needs to be transported, it is recommended to use our company's instrument packaging wooden boxes and shock absorbers to avoid unnecessary damage and losses during transportation.
When the contact resistance tester factory is not transported in wooden boxes, stacking and discharging are not allowed. The maximum stacking layer allowed when using our company's instrument packaging box is two layers.
During transportation of equipment, the loop resistance tester panel should face upwards.
2. Storage
The loop resistance tester supplier should be placed indoors in a dry, dust-free, ventilated, and non corrosive gas environment. Stacking and discharging are not allowed without wooden box packaging.
When storing equipment, the panel should face upwards. And place moisture-proof materials at the bottom of the equipment to prevent it from getting damp.
Core application scenarios
1. Handover acceptance and preventive testing: Before the installation and operation of new equipment or during regular maintenance, measure the DC resistance of its conductive circuit and check whether the contact condition of the connecting parts is good. This is one of the most basic and important testing items for power equipment.
2. Evaluate the connection status and degradation trend: Through longitudinal comparison of previous test results, effectively discover the increasing trend of resistance caused by contact surface oxidation, looseness, contact electrical wear, etc., and timely warn potential faults.
3. Fault location and repair verification: When the equipment overheats or has insufficient current carrying capacity, it is used to accurately locate the specific connection point where the resistance abnormally increases, and verify the repair effect after maintenance.
Product Function
1. High-Current DC Output: Provides a fixed test current of DC 100A (with a fixed 50A gear also available), which is essential for accurate resistance testing as per industry standards.
2. Direct Resistance Measurement: Measures circuit resistance directly within a range of 1～1999μΩ at the selected 50A or 100A current.
3. Continuous Operation: Capable of continuous output for long periods, which helps to effectively break through the oxide film or oil film on switch contacts to obtain the true resistance value.
4. Clear Digital Display: Uses a 3.5-digit LED display to show measurement results with a resolution of 1μΩ.
Product Advantages
1. High Accuracy & Reliability: Boasts an accuracy of 0.5%±1d and uses high-precision resistors to minimize the impact of environmental temperature on results, ensuring stable and repeatable readings.
2. Strong Anti-Interference Ability: Designed to maintain reading stability (with the last digit stable within ±1 word) even in electrically noisy environments, ensuring trustworthy data.
3. Robust and Durable Construction: Employs military-grade connectors that enhance anti-vibration performance, making it suitable for rough field conditions.
4. Portable Design: Features a compact size (390×300×150mm³) and lightweight build (6kg), making it easy to carry and operate on-site.
5. Compliant with Standards: Manufactured in strict accordance with international and national standards (e.g., DL/T 845.4-2004, ISO9001) and relevant preventive test regulations for power equipment.
FAQ
Q: What is the measuring range and resolution?
A: The measuring range is 1～1999μΩ with a resolution of 1μΩ.
Q: What test current does it use?
A: It has a fixed DC 100A output gear, as well as a 50A gear. The 100A current is recommended to meet standards for testing high-voltage switchgear contact resistance.
Q: What are the power supply and environmental requirements?
A: It operates on AC220V±10% 50Hz and is designed for a working environment with temperatures from -10℃ to 40℃ and humidity ≤80%RH.
Q: How portable is this instrument?
A: It has a dimension of 390×300×150mm³ and weighs approximately 6kg (excluding attachments), making it easy to carry for field testing.
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