LQTT Series 50kV/200kVA High-Voltage Test Transformer | Precision Testing Systems

The LQTT 50kV/200kVA High-Voltage Test Transformer delivers robust performance for industrial testing applications. Designed as a single-module cylindrical unit, it complies with international standards for dielectric testing, cable/transformer validation, and high-voltage research.

Core Technical Specifications

Extended Performance Capabilities

• Partial Discharge Level: <10 pC at 100% U_H (full system)

• Overcurrent Withstand: 120% rated current (4.8A) for 300s – no thermal damage

• Overvoltage Capability: 110% rated voltage (55kV) for 60s – no insulation failure

• Series Operation: Voltage unevenness ≤ ±5% (multiple units)

Operational & Safety Features

• HV Grounding: Integrated 5/5 current transformer for live monitoring and operator protection

• Thermal Performance:

• Winding temperature rise ≤ 65K (above ambient)

• Oil surface temperature rise ≤ 55K

• Protection System:

• 0.6kV ZnO arresters on excitation/transfer windings

• Oil injection/release valves

• Acoustic Noise: ≤ 65 dB(A)

Design & Compliance

• Construction: Cylindrical tank (single module)

• Dielectric Fluid: #25 Transformer Oil (GB 2536 standard)

• Thermal Cycling: Certified for 1-hour continuous operation at 100% U_H/I_H from ambient temperature