Contact Resistance Tester
Darui Electric recommends：
Contact Resistance TesterIntelligent Loop (Contact) Resistance Tester, per DL/T845.4-2004 standard.It combines HF switching power supply and digital circuit technology, designed per new power standard DL/T845.4-2004. Suitable for switchgear loop resistance measurement. Uses national standard 100A and 200A DC test current for direct loop resistance measurement with digital display. Accurate and stable performance, meeting power supply department requirements for on-site HV switch maintenance and factory loop resistance testing.
Features
1. 320×240 LCD display, high-speed thermal printer.
2. Compact, lightweight, anti-interference, high precision, easy operation, comprehensive protection.
3. Latest power tech for continuous high-current output, with 50A/100A/150A/200A selectable ranges.
4. Precision op-amps and high-accuracy quad-integral A/D converter with 16-bit MCU. Auto gain switching ensures measurement accuracy.
5. Built-in real-time calendar clock for timestamped data printing and storage.
6. Stores 200 data sets with history browsing and power-loss protection.
7. Ultra-wide range up to 0-4mΩ.
8. Full-keyboard HMI for intelligent fully-automated operation.
Technical Parameters
1. Measurement Range: 0~4mΩ (50A) 0~2mΩ (100A) 0~1.33mΩ (150A) 0~1mΩ (200A)
2. Test Current: DC 50A/100A/150A/200A fixed output
3. Accuracy: ±(0.5% rd+2d)
4. Continuous Runtime: 5s-599s
5. Display: Large Chinese LCD
Note: The above information and technical parameters are compiled and published by Yangzhou Darui Electric Co., Ltd.
