High Voltage Test Solutions
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Series Resonance Test Device

LHV Portable AC Resonant Test System for Cable Voltage Testing

Lightweight portable resonant test system for 35kV-110kV cable withstand voltage tests. Features dry epoxy reactors, SPWM modulation, and single-person mobility (≤30kg components).


  • US$1.00; Negotiated Price
  • Lead time: 90days

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Product Details

Product Tags

LHV Portable AC Resonant Test System for Cable Testing

On-Site Cable Testing Solution

This frequency conversion resonant test system specializes in AC withstand voltage tests for:

  • 35kV and below distribution cables (portable configuration)

  • 110kV+ transmission cables (with oil-immersed reactors)

  • Cross-linked polyethylene (XLPE) and oil-paper cables

Designed for field maintenance teams and cable installation crews.

Product Parameters

Rated output voltage0 ~ 220kV(AC effective value) and below
output frequency30~300Hz
Resonance voltage waveformPure sine wave, waveform distortion rate≤1.0%
Full load working timeContinuous working time of 60min
System quality factorUnder maximum load≥20
Frequency adjust fineness0.1Hz
Instability≤0.01%
Working power supplySingle-phase 220V or three-phase 380V±10%,Power frequency 50Hz±5%

Core Technology

Advanced Electrical Design:

  • SPWM Digital Waveform Generator - Minimizes harmonic distortion

  • IPM Power Module - Ensures stable high-power output

  • Orthogonal Asynchronous Modulation - Reduces switching losses

Mechanical Advantages:

  • Dry epoxy cast reactors - No oil leakage risk

  • Modular design - 30kg single-person portable units

  • Optional electric crane - For 100kg+ oil-immersed reactors

System Configuration

Component35kV Portable Version110kV+ Stationary Version
Reactor TypeDry epoxy castOil-immersed
Max Unit Weight30kg (single person)100kg+ (with crane)
Power Input220V single-phase / 380V three-phase
Typical Test Voltage2-3× rated voltage1.7-2.5× rated voltage

Field Deployment Advantages

Mobility Features:

  • Two-person portable mode (≤60kg assemblies)

  • Standard 19" rack-mountable components

  • IP54 protection for outdoor use

Test Efficiency:

  1. 5-minute setup time for pre-configured tests

  2. Auto-resonance frequency tracking

  3. Real-time PD monitoring capability

Technical Specifications

  • Frequency Range: 30-300Hz (programmable)

  • Voltage Accuracy: ±1% of reading

  • Reactor Q Factor: ≥40 (dry type), ≥60 (oil type)

  • Safety Standard: IEC 61010-1 CAT IV

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