LHV(W) Series No-PD Variable Frequency Power Supply

The LHV(W) Series delivers laboratory-grade <3% THD pure sine waves for precision partial discharge testing, outperforming conventional square-wave converters with true resonant circuit excitation for reliable HV equipment validation.

Product Parameters

Main performance indicators

Key Advantages

True Sine Wave Output

• No waveform distortion artifacts

• Eliminates peak measurement errors

• IEC-compliant test conditions

Advanced Safety Systems

• 7-stage protection cascade

• μs-level fault response

• Optical isolation up to 100kV

Testing Applications

• Resonant Testing: Excites L-C circuits for cable/GIS testing

• Transformer Tests: Induction withstand voltage verification

• PD Calibration: Stable source for discharge quantification

• Field Diagnostics: Portable solution for on-site testing

Technical Features

1. Precision Frequency Control: DDS chip generation with 0.01Hz resolution

2. Smart Protection: Integrated overvoltage, arc, and short-circuit safeguards

3. Portable Design: 50% lighter than conventional test sets

4. Efficient Operation: 70% faster setup than generator methods

System Protection

• Discharge breakdown protection

• Programmable overvoltage limit

• Output short-circuit cutoff

• Zero-start interlock

• Power amplifier protection

Compliance Standards

• IEC 60270 (Partial discharge measurement)

• GB/T 16927 (High-voltage test techniques)

• DL/T 849 (Resonant test device specifications)

Complete Resonant Test Packages

Pair the LHV(W) power supply with our no-PD reactors and measurement systems for turnkey testing solutions. Request application notes for your specific test requirements.