LQHV-20A Transformer DC Resistance Tester

High-Current Winding Resistance Analysis

The LQHV-20A sets new benchmarks in transformer testing with 20A maximum output current, reducing measurement time by 80% compared to traditional bridge methods. Essential for:

• Factory acceptance testing of large transformers

• On-load tap changer maintenance

• High-power inductor evaluation

Product Parameters

Technical parameters

Breakthrough Testing Technology

1. Ultra-Fast Measurement

• ⚡ Stabilizes 4x faster than conventional methods

• 🔄 Continuous tap changer testing without discharge delays

2. Intelligent Safety Systems

• 🔋 Automatic energy discharge with status indication

• 🛡️ Dual-level overcurrent protection

• 📢 Audible warnings during critical operations

3. Field-Optimized Design

• 🖨️ Built-in thermal printer with Chinese output

• 📱 Intuitive menu-driven operation

• ⚖️ Compact 5.2kg military-grade casing

Technical Advantages

• High-Current Testing: 20A output for large windings

• Precision Measurement: 0.1μΩ resolution

• Data Integrity: ±0.2% basic accuracy

• All-Terrain Ready: Vibration-resistant construction

Typical Applications

• Power Utilities: Preventive maintenance of grid transformers

• Transformer OEMs: Production line quality control

• Industrial Plants: Reactor and busbar testing

• Service Teams: Post-fault diagnostics

Why Choose LQHV-20A?

• ✅ Time Savings: Complete three-phase tests in under 2 minutes

• ✅ Enhanced Safety: Comprehensive discharge protection

• ✅ Field Reporting: Instant Chinese/English test reports

• ✅ Heavy-Duty: 20A continuous output capability