Product Introduction
The UHV-H100A Contact Resistance Tester by Wuhan UHV Power Technology Co., Ltd. addresses the limitations of traditional QJ44 DC double arm bridge models, which use a minimum current of 1mA. This low current is insufficient for accurately measuring the contact resistance in high-voltage circuit breakers due to factors like oil layers and oxidation. The UHV-H100A adheres to national standards requiring a testing current of at least 100A, ensuring precise measurements.

Product Features
1. High Current: Utilizes advanced power supply technology to provide continuous high current, effectively penetrating oxide layers for accurate results.
2. Anti-Interference: Displays stable results with minimal error even in high-interference environments.
3. Durability: Incorporates precise resistances and military-grade connectors to minimize temperature impact and enhance vibration resistance.
4. Portability: Compact and lightweight design.

Technical Parameters

• Measurement Range: 0–1999 μΩ
• Resolution: 1 μΩ
• Measured Current: DC 6-100A
• Accuracy: 0.5%±1d
• Display Mode: 3-1/2 LCD for both current and resistance
• Power Supply: AC220V±10% 50Hz
• Service Conditions: Temperature -10℃ to 40℃, Humidity ≤80%RH
• Dimensions: 390×300×150 mm
• Weight: 5Kg (excluding accessories)