According to the requirements of the new "Power Equipment Handover and Preventive Test Procedures", the test current for measuring the conductive loop resistance of various switchgear shall not be less than 100A. In response, our factory has designed and developed a new generation of intelligent loop resistance tester products according to the new regulations. This product is suitable for testing the contact resistance value of the main contacts of high and low voltage switches, and the DC resistance value of high and low voltage cable lines, etc. The JD-100 Aintelligent loop resistance test instrument adopts 100A constant current output. The maximum output voltage reaches 10V (2-3 times that of conventional instruments), allowing the use of thin test leads, greatly reducing the labor intensity of field test personnel. The entire testing process is automatically controlled by a single-chip microcomputer, with high accuracy and good repeatability. Single-button operation is simple and easy. Test data is displayed on a liquid crystal display and results can be printed. It is suitable for different working environments.
Technical Indicators
Measurement Range: 0-1999μΩ Resolution: 1μΩ
Measurement Current: >100A/DC
Measurement Accuracy: 0.5 class
Display Mode: LCD display, result printing
Operating Temperature: -10℃~50℃
Operating Current: AC220V±10%
Dimensions: 290×280×240
Weight: 6.2Kg 2. Working Principle
This instrument has a built-in 100A switching power supply to achieve constant current 100A with two sets of circuits for real-time tracking testing, ensuring correct test results.
Operating Procedures
1. Connect the wiring according to the four-terminal method.
2. Turn on the power.
3. Press the Measure/Print button (if the displayed current A value is less than 100A, it can be corrected via the panel current fine-tuning).
4. After the measurement value is displayed, if data needs to be saved, press the Measure/Print button for three seconds to print the data.
5. After the measurement is completed, please turn off the power.
6. Please take care of the test clamps.
