Transformer Testing Instrument
LQHV-50A Transformer DC Resistance Tester
Ultimate 50A Winding Resistance Solution
The LQHV-50A represents the pinnacle of transformer testing technology with 50A stable DC output, achieving measurement speeds 95% faster than traditional methods. Certified to DL/T 845.3-2004 and GB national standards.
Product Parameters
Technical parameters
project | Technical indicators and parameters | note |
Test current | 2.5A,5A,10A,20A,50A | / |
Measuring range | 2.5A:10mΩ~8Ω | / |
5A: 1mΩ~4Ω | / | |
10A:1mΩ~2Ω | / | |
20A:1mΩ~1Ω | / | |
50A:1mΩ~500mΩ | / | |
measurement accuracy | ±0.2%(full range) | / |
data storage | 255 | / |
Display | LCD | Resistance is 4 1/2 bits |
Maximum resolution | 0.1μΩ | / |
power supply | AC 220V±22V,50Hz±2Hz | insurance tube5A |
Maximum power | 1500W | Testcurrent for 10A |
work environment | environment temperature:0℃~40℃;Relative humidity :≤80% | / |
Volume | 440x230x490mm3 | / |
Weight | 16kg | with accessories |
Cutting-Edge Technology
1. Extreme-Speed Measurement
⏱️ 3-second stabilization for most windings
🔄 Continuous testing during tap changer operation
2. Military-Grade Safety
🔊 Multi-stage discharge alarms
🛡️ Triple protection circuits
⚡ 50A overload protection
3. Advanced Data Handling
📊 8" sunlight-readable touchscreen
💾 Onboard 255-test memory
🔌 USB/RS485 data export
Technical Superiority
Micro-Ohm Resolution: 10μΩ detection capability
Temperature Stability: ±5ppm/°C reference
Rugged Construction: IP55-rated aluminum alloy case
Smart Current: Auto-optimized output for each winding
Critical Applications
UHV Transformers: 1000kV+ substation maintenance
Industrial Furnaces: High-current reactor testing
Power Plants: Generator step-up transformer commissioning
Manufacturing: Production line quality control
Why Professionals Choose LQHV-50A
✅ Industry-Leading 50A Output for massive windings
✅ Laboratory-Grade 0.1% Accuracy in field conditions
✅ Uninterrupted Tap Changer Tests with auto-refresh
✅ Future-Proof Connectivity for Industry 4.0 integration