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Transformer Testing Instrument

LQHV-100A Transformer DC Resistance Tester | 100A Heavy-Duty Winding Analysis

Industrial-grade LQHV-100A delivers 100A output for ultra-fast transformer testing with vertical chassis design, automatic discharge alarms, and microcontroller precision.


  • US$1.00; Negotiated Price
  • Lead time: 30days

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Product Details

Product Tags

LQHV-100A Transformer DC Resistance Tester

100A Heavy-Duty Winding Analysis

The LQHV-100A sets new industry standards with 100A maximum output current, specifically engineered for testing extra-large power transformers and reactors. Features fully automated microcontroller operation and vertical chassis design for field service efficiency.

Product Parameters

Technical parameters

Current range and range100A10μΩ~100mΩ
40A50μΩ~500mΩ
20A100μΩ~1Ω
10A500μΩ~2Ω
5A1mΩ~4Ω
Accuracy± (0.2%±2 words)
Resolution0.1μΩ
Ambient humidity-10℃~40℃
Relative humidity≤80%RH No condensation
Working power supplyAC220V±10% 50Hz

Breakthrough Technology

1. Extreme-Current Testing

  • ⚡ 100A continuous output for 500MVA+ transformers

  • 🔄 On-load tap changer testing without interruption

2. Intelligent Operation

  • 🧠 32-bit microcontroller automation

  • 📈 Auto-refreshing measurements during adjustments

  • 🔋 Smart power management (50% heat reduction)

3. Field-Optimized Design

  • 📏 Vertical chassis for space-constrained substations

  • 🔊 Multi-stage discharge alarms with LED indicators

  • 🖨️ Built-in report generation

Technical Advantages

  • Micro-Ohm Precision: 5μΩ baseline resolution

  • Continuous Operation: 8-hour uninterrupted testing

  • Counter-EMF Protection: 1000V spike immunity

  • All-Environment Ready: -20°C to 50°C operation

Critical Applications

  • UHV Transformers: 1000kV+ grid infrastructure

  • Industrial Megawatt Reactors: Smelter/arc furnace systems

  • Generator Step-Up Units: Nuclear/thermal power plants

  • HVDC Converter Transformers: Renewable energy farms

Why Choose LQHV-100A?

  • Unmatched 100A Output for the largest transformers

  • Vertical Service Design for substation environments

  • Military-Grade Protection against field hazards

  • Smart Energy Management for continuous operation

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