LQTT Series 400kV/400kVA Dual-Voltage AC Test Transformer

Industrial-Grade Precision for High-Voltage Testing Applications

Core Specifications

Performance Excellence

Electrical Characteristics

• No-Load Current: <10%

• Waveform Distortion: ≤3% THD

• Impedance Voltage: ≤10%

• Dielectric Loss (tan δ): <0.4%

• Partial Discharge (PD):

• <5 pC at 400 kV (Full System)

• <3 pC at 300 kV (Standalone)

Environmental Compliance

• Noise Level: <60 dB (Measured at 4m, Full Load)

Robust Safety Margins

Technical Advantages

1. Intelligent Dual-Voltage Design

Configurable LV windings enable 200kV/400kV operation without external equipment - ideal for multi-standard testing labs.

2. Ultra-Low Partial Discharge

Industry-leading <3pC PD at 300kV ensures precision in sensitive applications (cable/GIS testing per IEC 60270).

3. Enhanced Dielectric Performance

0.4% dielectric loss maximizes energy efficiency - 35% lower than industry averages for 400kV-class transformers.

4. Nuclear-Grade Resilience

Certified overload protection (125% current/110% voltage) exceeds IEC 60076-11 safety requirements.

Target Applications

• HVDC component validation

• Power transformer induced voltage tests

• Cable & GIS partial discharge mapping

• Utility-scale insulator flashover testing

• Research lab impulse voltage generation

Certification-Ready Performance

*"Engineered for ISO 17025-accredited testing labs requiring uncompromised measurement integrity. With dual-voltage flexibility, ultra-low PD/THD, and military-grade overload protection, the LQTT-400kV delivers forensic precision in high-stakes HV validation."*