HGTS 270kV/405kVA SF6 Gas Insulated Test Transformer

The industrial-grade HGTS 270kV/405kVA transformer redefines high-current testing capabilities with flexible dual-voltage operation and exceptional 405kVA capacity in a maintenance-free SF6 design.

Core Specifications

• Rated Capacity: 405kVA (industry-leading for 270kV class)

• Dual Voltage Output: 135kV/1.5A (serial) or 270kV/1.5A (parallel)

• LV Configuration: 2×6kV windings (33.75A each)

• Partial Discharge: ≤2pC at 270kV (≤1pC at 235kV)

• Noise Level: ≤65dB(A)

Breakthrough Performance Features

Dual-Voltage Operation

Rugged Overload Protection

• 120% current (1.8A) for 3 minutes - no thermal damage

• 110% voltage (297kV) for 1 minute - insulation intact

• Survives 3×270kV short-circuit breakdown tests

Precision Engineering

Unmatched Insulation Quality

• PD levels <2pC at full rating (70% better than industry standard)

• Dielectric loss <0.5% at 20°C

• Winding insulation >1500MΩ (HV-LV-ground)

Industrial Durability

• Continuous 30min operation at 100% rating

• 20kV/1min LV winding withstand

• 5kV/1min HV terminal withstand

Heavy-Current Applications

• Cable Testing: Long-run HV cable commissioning

• Switchgear Testing: GIS circuit breaker endurance tests

• Transformer Factories: Production line quality validation

• Research Facilities: High-current plasma experiments

• Energy Sector: Substation equipment stress testing

Technical Superiority

1. Current Capacity: 1.5A output enables testing of low-impedance loads

2. Measurement Precision: <3% waveform deviation ensures lab-grade accuracy

3. Safety: Integrated damping resistor protects during breakdown tests

4. Reliability: Stationary casing withstands industrial environments

5. Flexibility: Dual-voltage operation reduces equipment needs

Ideal For Demanding Test Scenarios:

• High-current impulse testing

• Extended duration withstand tests

• Precision partial discharge measurement

• Mission-critical equipment validation