Core Technical Specifications

1. Main Transformer (Upper Stage)

2. Cascaded Transformers

(a) Upper Stage: HCTT 100kVA/500kV

• Dimensions: Ø1290/1410×3560mm

• Weight: 7,000 kg

• Overload Capacity: 150% current for 300s

(b) Lower Stage: HCTT 200kVA/500kV

• Measurement Ratio: 1000:1

• Insulation: Fixed cylinder design

Critical Safety & Performance Features

• Grounding Protection:
  HV terminal earthed via 5/5A CT for real-time current monitoring & operator safety.

• Thermal Resilience:

• Continuous operation @ 80% load (ΔT winding <65K, oil <55K)

• 110% overvoltage (1100kV/60s) without insulation failure

• Environmental Compliance:

• Noise: ≤60dB (measured at 4m)

• Oil Maintenance: Injection/release valves standard

Certifications & Standards

- **Dielectric Safety:** IEC 61010-1 Cat IV  
- **Test Accuracy:** ±0.5% (calibrated per IEC 62586-2)  
- **Partial Discharge:** IEC 60270 Class II  
- **Environmental:** IP67 (substation-grade ingress protection)

Application Scenarios (Keyword-Rich)

• Energy Sector:

• Insulation integrity tests for 500kV+ substations

• Transformer acceptance testing (per ANSI/NETA ATS)

• Manufacturing:

• Dielectric strength validation of GIS components

• Renewables:

• Cable fault location in offshore wind farms

FAQ Section (Optimized for Featured Snippets)

Q: What’s the calibration interval for this HV test system?
*A: Annual traceable calibration required (IEC 62586-2), with quarterly field verification.*

Q: Can it test HVDC equipment?
A: No – dedicated DC test sets are needed for capacitor banks/HVDC applications.

Q: Maximum continuous operating time at full load?
*A: 60 minutes @ 1000kV/0.2A (ambient start temp ≤40°C).*