Current Expander
LQCE-1000A Current Expander: Megawatt-Scale Insulation Testing
Heavy-duty current extender delivering 1000A measurement capability for the HCL2840 Automatic Tan Delta Bridge, specifically engineered for utility-scale power assets and industrial capacitor banks.
Core Specifications
| Parameter | Specification | Industry Advantage |
|---|---|---|
| Accuracy | ±0.02% | Superior to typical 0.05% extenders |
| Current Ratios | 1000:1, 100:1, 10:1 | 3-range flexibility |
| Weight | 19kg | Portable for field deployment |
| Dimensions (L×W×H) | 400×250×350mm | Compact substation footprint |
| Operating Temp | 0°C to 40°C | Grid-hardened |
Critical Applications
Shunt Reactors: 1000A+ loss measurements
EHV Cables: Multi-km capacitance testing
STATCOM Capacitors: Factory acceptance tests
Generator Step-Up Transformers: Bushings diagnostics
Key Differentiators
Precision Engineering
Low 0.02% ratio error ensures HCL2840's ±1% tan δ accuracy is maintained
Kelvin-connected shunts minimize thermal drift
Industrial Design
Oil-cooled windings for sustained 1000A operation
IP54-rated enclosure (optional)
Vibration-resistant mounting points
Compatibility
Seamlessly integrates with:
HCL2840 Automatic Tan Delta Bridge (12kV/200mA system)
Third-party HV test sets via custom adapters
Ordering Information
Standard Package: HCE-1000A unit, 2m shielded cables, calibration certificate
Optional: Wheeled transit case (adds 5kg)
