Relay Tester/Secondary Circuit Tester
LQHV-107 Advanced CT/PT Test System
Complete transformer verification in one portable unit with automatic curve generation and instant field reporting
Product Parameters
The main parameters
| Item | parameter | |
| Working power supply | AC220V±10% 、50Hz | |
| Devices output | 0~2500V (peak value of 20A) Note: 0 to 5A is the true value, and greater than 5A to 20A is the calculated value | |
| High current output | 0～600A | |
| Excitation measurement accuracy | ≤1.0% (0.5%* reading +0.5%* range) | |
| CT ratio measurement | The scope of | ≤3000A/1A(15000A/5A) |
| precision | ≤0.5% | |
| PT ratio measurement | The scope of | ≤500kV |
| 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 Testing Capabilities
Excitation Testing
0-250V/0-20A range
±0.5% accuracy
Automatic inflection point detection
Ratio & Polarity
1-5000:1 ratio range
±0.2% accuracy
Automatic polarity verification
Error Analysis
5%/10% error curve generation
Secondary burden measurement
Demagnetization function
Technical Specifications
General
Weight: ≤22kg (field-portable)
Dimensions: 320×280×150mm
Power: AC 220V±15% / 50Hz
Display & Interface
7" color LCD touchscreen
Graphical user interface
Intelligent controller
Data Management
3000+ test records storage
Built-in thermal printer
USB data export (Word reports)
Standards Compliance
GB 20840.2-2014 (Voltage Transformers)
GB 20840.3-2013 (Current Transformers)
IEC 61869-1:2007
DL/T 726-2013
Simplified Testing Process
Connect test leads (auto-recognition)
Select test parameters via touchscreen
Run automated test sequence
View results on-screen or print immediately
Export detailed reports via USB
Typical Applications
Power Utilities
Protection CT verification in substations
Energy Metering
Accuracy testing for billing transformers
Industrial Maintenance
Periodic transformer testing
Why Choose LQHV-107?
✅ Complete solution: All tests in single unit
✅ Time-saving: Automatic curve generation
✅ Field-ready: Lightweight with built-in printer
✅ Regulatory compliant: Meets latest GB standards
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