Relay Tester/Secondary Circuit Tester
LQHV-109 Advanced CT/PT Test System
Complete transformer verification in one portable unit with automatic error curve generation and instant field reporting
Product Parameters
The main parameters
Item | parameter | |
Working power supply | AC220V±10% 、50Hz | |
Device output | 0 ~ 2500V (Current Max set 20A) | |
High current output | 0~1000A | |
Excitation measurement accuracy | ≤0.5%(0.3%* reading +0.2%* range) | |
CT ratio measurement | The scope of | ≤5000A/1A(25000A/5A) |
precision | ≤0.5% | |
PT ratio measurement | The scope of | 5~220kV |
precision | ≤0.5% | |
The work environment | The temperature | -10℃ ~ 40℃ |
humidity | ≤90% | |
The altitude | ≤1000m | |
size | 410mm × 260mm × 340mm | |
The weight of the | ≤25kg |
Key Features
Dual-Mode Testing
Simultaneous CT & PT analysis without reconfiguration
Smart Curve Generation
Automatic 5%/10% error curves with knee-point detection
Field Reporting
Built-in thermal printer + USB export to Word/Excel
Technical Specifications
Parameter | Specification |
---|---|
Testing Range | CT: 1-5000:1, PT: 1-1000:1 |
Accuracy | ±0.2% (ratio), ±0.5% (excitation) |
Display | 7" color LCD with touch interface |
Data Storage | 3000+ test records |
Connectivity | USB 2.0 for data export |
Weight | ≤22kg (field-portable) |
Standards Compliance
GB 20840.2-2014 (Voltage Transformers)
GB 20840.3-2013 (Current Transformers)
IEC 61869-1:2007
DL/T 726-2013
Testing Process
Connect test leads (auto-recognition)
Select test parameters via touchscreen
Run automated test sequence
View results on-screen or print immediately
Export reports via USB for documentation
Industry Applications
Power Utilities
Protection CT verification in substations
Energy Metering
Accuracy testing for billing transformers
Industrial Plants
Periodic maintenance of critical transformers
Why Choose LQHV-109?
✅ Complete testing solution in one compact unit
✅ Automatic curve generation saves time
✅ Field-ready design with built-in printer
✅ Complies with latest industry standards