LQHV-H100P 100A/50A Contact Resistance Tester | 0.01μΩ High-Precision Micro Ohmmeter

The LQHV-H100P Contact Resistance Tester is an advanced instrument for high-precision measurement of contact resistance in HV/LV switches, cable lines, and other micro-resistance applications. With 100A/50A DC outputs and 0.01μΩ resolution, it exceeds imported ohmmeters in performance while complying with DL/T 845.4-2004 and JJG1052-2009 standards.

Technical Parameters

Product Overview

Traditional testers (e.g., QJ44 bridge) use mA-level currents, failing to detect conductor defects or overcome oxidation layers. The H100P solves this with:

• 100A DC current (maintained for ≥60s per standards)

• Dual-range flexibility (50A or 100A selectable)

• 0.01μΩ resolution (highest in domestic market)

Key Specifications

• Current Outputs: 50A or 100A DC (user-selectable)

• Resolution: 0.01μΩ (dual 16-bit Σ-Δ AD sampling)

• Accuracy: ±0.5% RDG ±2 digits

• Test Duration: Programmable (5s–599s)

• Compliance: DL/T 845.4-2004, JJG1052-2009

• Display: Large LCD with data storage & USB export

Core Features

1. Unmatched Precision

16-bit Σ-Δ AD sampling and digital signal processing achieve 0.01μΩ resolution, outperforming imported competitors.

2. Intelligent Operation

Auto-ranging, over-temperature protection, and programmable test times (5s–599s) ensure safety and accuracy.

3. Military-Grade Durability

Imported components, military connectors, and temperature compensation resist vibration and environmental interference.

4. Advanced Data Management

USB data export, real-time printing, and PC software compatibility for analysis.

5. Ergonomic Design

Rotary mouse input, lightweight body (specify weight), and intuitive interface for field use.

Applications

• HV/LV switch contact resistance testing

• Cable line DC resistance measurement

• Circuit breaker and isolator maintenance

• Factory acceptance tests (FAT) per DL/T 845.4-2004

Why Choose the H100P?

1. Regulatory Compliance: Meets 100A/60s requirements of JJG1052-2009.

2. Future-Proof: USB data export and PC software integration.

3. Versatile: Handles switches, cables, and custom high-current applications.

Note: For optimal results, use manufacturer-calibrated test leads and annual calibration services.