HFRS-T 250kV/22500kVA High-Precision Resonant Test System

Designed for ultra-high-voltage equipment verification, the HFRS-T 250kV/22500kVA system delivers exceptional 29.5H±2% inductance accuracy with industry-leading 275kV/1min withstand capability for critical power infrastructure testing.

Unmatched Technical Specifications

• Rated Capacity: 22,500kVA at 250kV/90A

• Voltage Endurance: 275kV for 1 minute (terminal: 10kV/5min)

• Frequency Range: 14-300Hz ultra-wide operation

• Quality Factor: Q≥150 at 15Hz

Precision Engineering Features

Core Performance

• Inductance Accuracy: 29.5H ±2% guaranteed stability

• Thermal Management:

• 65K maximum winding temperature rise

• 55K transformer oil temperature limit

• 40K epoxy surface temperature ceiling

• Duty Cycle: 1hr ON / 1hr OFF (max 3 cycles/day at full load)

Enhanced Electrical Design

Military-Grade Construction

Robust Mechanical Design

• Segmented air-gap iron core with Class 1 copper windings

• Industrial iron-shell oil tank for 40% better cooling than epoxy

• Integrated breather capsule with moisture absorption

Transport Optimized

• Vibration-tested per IEC 61373 Category 1 for:

• 2000km railway transport

• 1000km highway movement

• 250kV-rated lifting hooks with safety interlocks

Critical Applications

• EHV Transformer Testing: 500kV class factory acceptance tests

• Long Cable Systems: Very low frequency (14Hz) commissioning

• GIS Switchgear: Partial discharge measurement

• Offshore Platforms: Subsea cable diagnostics

Why Choose This System?

1. Extended Frequency Range: 14Hz capability for long cable testing

2. Enhanced Q Factor: 50% better efficiency at low frequencies

3. Rugged Construction: Withstands -40°C to +50°C operation

Certification & Compliance

• Meets IEC 60060-1 (HV testing) and IEC 60296 (oil standards)

• EMC compliant per IEC 61000-6-2/-6-4

• Full parameter nameplates including:

• Serial/parallel connection data

• Transportation orientation markers

• QR codes linking to test reports