Current Expander
LQCE-3000A Current Expander: 3000A Precision for Critical HV Diagnostics
Engineered for ultra-high-current insulation testing, the HCE-3000A delivers laboratory-grade 0.002% accuracy at 3000A - the industry's tightest tolerance for tan delta bridge current expansion.
Unmatched Technical Specifications
| Parameter | Specification | Competitive Advantage |
|---|---|---|
| Accuracy | ±0.002% | 5x more precise than standard 0.01% units |
| Current Ratios | 3000:1, 1000:1, 100:1, 10:1 | 4-range versatility |
| Weight | 58kg | Stable platform for field measurements |
| Dimensions | 450×350×450mm | Optimized for substation deployment |
| Temp Range | 0°C to 40°C | NEMA 4X enclosure available |
Mission-Critical Applications
HVDC Converter Reactors: 3000A+ loss measurements
500kV+ Cables: Megameter-length capacitance testing
Industrial Capacitor Banks: >10MVar capacity validation
Generator Neutral Grounding: High-impedance system diagnostics
Engineering Breakthroughs
Precision Architecture
Zero-flux current sensors for 0.002% ratio linearity
Active temperature compensation (patent pending)
Ruggedized Design
Forced-air cooling with thermal cutoffs
Vibration-dampened mounting platform
EMI-shielded signal pathways
Compatibility & Integration
Primary System: HCL2840 Automatic Tan Delta Bridge
Ancillary Equipment: 5kV+ current injection systems
Data Systems: RS-485/Modbus RTU output (optional)
Certifications & Compliance
IEC 61869-1:2017 (Instrument transformers)
IEEE C57.13-2016 (Accuracy classes)
ANSI/NETA ATS-2021 (Acceptance testing)
