Partial Discharge Test Equipment
LHVQW Series Inflatable No-PD Test System - 1000kV GIS/GIL Testing Solution
Designed for China's ultra-high-voltage grid demands, the LHVQW Series delivers precision testing up to 1000kV with breakthrough <3pc partial discharge volume - setting new standards for GIS/GIL equipment validation.
Product Parameters
Technical parameter
| Parameters | Value |
| Voltage level | 100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV (higher voltage levels can be customized) |
| Capacity | 50-2000kVA (higher capacity levels can be customized) |
| The way high voltage is generated | High voltage transformer boosting and series resonance (power frequency, frequency conversion), all boosting methods are one-stage boosting without the need for series boosting. |
| Input voltage (primary voltage) | 0.35-10kV |
| Partial discharge capacity of equipment | 1-3pc under rated voltage (normal environment) |
| Temperature rise | The temperature rise of the rated current running for 60 minutes shall not exceed 65K (50Hz) |
Core Technical Advantages
Ultra-Low Discharge Design
Fully shielded inflatable chamber maintains <3pc local discharge even at 1000kV
Live-Line Capable
On-line installation and testing without equipment shutdown
Multi-Function Platform
Integrated withstand voltage, PD test, and precision measurement in one system
Key Specifications
| Voltage Class | Up to 1000kV |
|---|---|
| Partial Discharge | <3pc (IEC 60270 compliant) |
| Testing Modes | AC withstand voltage | Partial discharge | Precision measurement |
| Signal Processing | High-speed AD conversion + adaptive digital filtering |
Primary Applications
GIS Substations: Preventive testing and commissioning
GIL Manufacturers: Factory acceptance testing
Insulator Plants: Basin insulator quality verification
Traditional HV Equipment: Withstand voltage tests via bushing interface
System Features
Compact Design: 40% smaller footprint than conventional test systems
Modular Construction: High-voltage isolation switch enables multi-configuration testing
Field-Deployable: Vibration-resistant for transportation to remote substations
Power Efficient: 30-50% reduced power capacity requirements vs. conventional systems
Technical Innovation
Advanced Signal Processing
Combines 16-bit AD conversion with adaptive digital filtering to eliminate interference while preserving true PD signals - achieving 95%+ detection accuracy in noisy substation environments.
Inflatable Shielded Chamber
Proprietary SF₆/N₂ gas mixture design provides complete HV isolation with zero external electromagnetic interference.
Compliance Standards
IEC 62271-203 (GIS testing requirements)
GB/T 11022 (High-voltage switchgear standards)
DL/T 617 (GIS substation maintenance regulations)
Custom Configuration Service
Our engineering team can tailor the LHVQW system for your specific GIS/GIL testing requirements - from 500kV to 1000kV applications. Request a system demonstration with your actual test specimens.
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