LQJW Series Oil-Immersed No-PD Test Transformer

Engineered for precision high-voltage testing, the LQJW Series delivers ultra-low ≤5pc partial discharge performance - making it ideal for sensitive insulation testing of power equipment.

Product Parameters

Technical Parameter

Key Advantages

Ultra-Low Discharge

Multi-layer shielding maintains ≤5pc even at maximum capacity

Live Testing Capable

On-line installation without equipment shutdown

Advanced Protection

Auto-cutoff for overcurrent/overvoltage conditions

Primary Applications

• Transformer Manufacturers: Factory acceptance testing

• Cable Plants: Partial discharge qualification

• GIS Producers: Insulation withstand voltage tests

• Research Labs: Material dielectric studies

Technical Features

1. Epoxy-Oil Design: Combines oil cooling with epoxy mechanical stability

2. Superior Waveform: <1% THD for accurate results

3. Compact Construction: 30% lighter than conventional test transformers

4. Multi-Standard Compliance: Meets GB1094, DL417, JB/T9641 requirements

Testing Capabilities

Partial Discharge Testing

• Detection threshold: ≤5pc

• Frequency range: 30-500kHz

• Advanced noise rejection

Withstand Voltage Testing

• Up to 350kV capacity

• Precision voltage control

• Ramp rate adjustment

Compliance Standards

• IEC 60270 (Partial discharge measurement)

• GB 1094.1-5 (Power transformer standards)

• DL/T 417 (On-site PD measurement)

• JB/T 9641 (Test transformer specifications)

Custom Configuration Available

Our engineers can tailor the LQJW system for your specific voltage and capacity requirements - from 110kV to 350kV applications. Request technical datasheet with complete specifications.