Ground/Insulation Resistance Tester
LQ-15kV Megohmmeter: The Ultimate High-Voltage Insulation Tester
The LQ-15kV Megohmmeter redefines high-voltage insulation testing with its industry-leading 15kV maximum output and 10mA short-circuit current. Engineered for national grid operators and power generation facilities, this instrument delivers laboratory-grade precision for testing ultra-high voltage transformers (up to 800kV class) and long-distance transmission cables.
Product Parameters
Technical parameters
| Measurement voltage range | 0.5kV、1kV、2.5kV、5kV、10 kV、15kV |
| Measurement voltage accuracy | ±(5%＋10V) |
| Short circuit current | 10mA |
Measurement range and accuracy
| Measurement range | Resistance measurement range | Accuracy |
| 20MΩ | 0.01～19.99MΩ | ±(5%+3d) |
| 200MΩ | 5.0～199.9MΩ | ±(5%+3d) |
| 2000MΩ | 50～1999MΩ | ±(5%+3d) |
| 20GΩ | 0.5～19.99GΩ | ±(5%+3d) |
| 200GΩ | 5.0～199.9GΩ | ±(10%+3d) |
| 2000GΩ | 50～1999GΩ | ±(20%+10d) |
Basic parameters
| Anti-electric field interference ability | 2mA(50/60Hz) |
| Time and alarm functions | maximum value of stopwatch is 19 minutes and 59 seconds. 20 minutes for a cycle. The stopwatch will tell the time at these time points: 15 seconds, 60 seconds and every 60 seconds.When telling time, resistance readings hold for 3 seconds.If the measured resistance is below the lower limit of range, the reading is invalid and the instrument will continuously sound to give an alarm. |
| Display | three and a half bits LCD digital meter (three), respectively show test voltage, test resistance, test time. |
| Power supply | DC: rechargeable lithium battery, DC15V power supply. With AC (50 / 60Hz) special adapter access port to charge the battery. |
| Operating Conditions | Temperature：-20℃～+40℃；Relative humidity：20%～90% |
| Dimensions | 315×240×180mm3 |
| Weight | 5.5kg |
Unparalleled Technical Specifications
1. World-Class Voltage Performance
0.5-15kV stepless adjustment: Precise control for all equipment classes
10mA output current: Charges capacitive loads up to 50,000μF
0.01MΩ-1999GΩ range: Exceeds IEC 60243-1 requirements
2. Industrial-Grade Construction
Aerospace-grade connectors: 20,000 mating cycle rating
4.2kg rugged design: 30% lighter than comparable 15kV testers
IP55 protection: Operates in cable tunnels and outdoor substations
Technical Specifications
Voltage Accuracy: ±1.5% ±10V (0-15kV)
Resistance Precision: ±2.5% of reading
Safety Standards: IEC 61010-1 CAT IV 1500V
Data Storage: 200 test records with GPS tagging
Professional Applications
UHV Transmission:
800kV transformer factory acceptance tests
Gas-insulated line (GIL) commissioning
Power Generation:
Nuclear plant emergency generator testing
Hydro turbine step-up transformer diagnostics
Why Grid Operators Choose LQ-15kV
Unmatched Capacity: Tests 500m+ cable runs without disconnection
Future-Ready: Designed for 1100kV UHV projects
Global Standard: Complies with IEC, IEEE, GB, and DL standards
Includes 5-year performance warranty and lifetime calibration support.
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