ZCVF Variable Frequency Resonant Test System
for High Voltage AC Withstand Testing

  • Series resonance greatly reduces required power supply capacity for field testing
  • 6000kVA/1000kV and 1500kVA/750kV configurations for different voltage levels
  • Automatic resonance search, curve display, voltage stabilization and data storage
  • Multiple protections: overvoltage, overcurrent, detuning, flashover and emergency stop
Variable Frequency Resonance
 AC Withstand Test
 High Voltage Test Equipment

ZCVF Variable Frequency Resonant Test System

CTA-1000 Series CT Analyzer automatically determines all relevant current transformer values and compares the results with

    Power Supply
    Test voltage & time
    Types of tested subjects
    If test Generator
    If test Cable
    If test Transformer, etc.
    Partial discharge test is needed or not?

    Why Choose ZCVF Variable Frequency Resonant Test System?

    Kvtester Electronics Technology Co., Ltd. is a leading and high-tech enterprise specializing in the R&D,
    manufacturing, and sales of power testing equipment and measurement instruments.
    • 01

      Greatly Reduced Power Capacity

      The supply only provides active system loss, so test power demand is only about 1/Q of the test capacity.
      5704279
      5704279
    • 02

      Smaller and Lighter Equipment

      Series resonance eliminates bulky high-power voltage regulators and ordinary power-frequency test transformers.
      11993008
      11993008
    • 03

      Better Output Waveform

      The resonant circuit improves voltage waveform distortion and helps prevent breakdown caused by harmonic peaks.
      7275759
      7275759
    • 04

      Safer Flashover Protection

      Lightweight structure below 10kg makes the CT/PT tester easy to carry for frequent on-site service work.
      11343455
      11343455

    Resonant Test Working Principle and Test Flow

    The variable frequency power supply searches the resonance point, boosts the voltage,
    stabilizes output and records the final AC withstand test data.

    • Connect Test System

      Connect excitation transformer, resonant reactor, voltage divider and the tested cable, GIS, transformer or capacitive equipment.
      01

    • Run Frequency Tuning

      Use automatic or manual tuning to locate the resonance point. The LCD shows scanning curve for intuitive judgment.
      02

    • Boost and Generate Result

      Boost by stage or continuously, maintain stable test voltage, save data and output or print records after completion.
      03

    ZCVF Test Functions

    • Resonance voltage and target voltage display
    • Test frequency and measurement frequency display
    • Low-voltage voltage/current monitoring
    • Withstand voltage time and stage boosting
    • Overvoltage and overcurrent protection
    • Flashover, detuning and emergency stop protection
    • Automatic, semi-automatic and manual modes
    • Frequency curve and voltage curve display
    • Manual result saving and data query
    • USB output, upload and printing support
    • Automatic voltage stabilization up to 1.0%
    • Frequency resolution selectable as required
    Variable Frequency Resonant Test System

    Application Scenarios

    • 电力施工现场

      Power Utility Field Testing

    • 变电站

      Substation Commissioning

    • High Voltage Cable AC Withstand Test

      High Voltage Cable AC Withstand Test

    • GIS and Switchgear Testing

      GIS and Switchgear Testing

    • Transformer and Reactor Test Sites

      Transformer and Reactor Test Sites

    • 第三方检测公司

      Testing Companies / Institutions

      ZCVF Resonant Test System Specifications

      Key technical parameters for engineers evaluating high voltage variable frequency series resonance test equipment.
      Item ZCVF-6000kVA/1000kV ZCVF-A 1500kVA-750kV
      Rated Capacity / Voltage 6000kVA / 1000kV 1500kVA / 750kV
      Interface Touch or external mouse large-screen LCD interface Large LCD screen with scanning curve display
      Operation Mode Fully automatic, semi-automatic and manual Fully automatic, manual, automatic tuning with manual boosting
      Frequency Setting 30–300Hz, 45–100Hz, 200–300Hz; resolution 0.1Hz / 0.2Hz / 0.5Hz / 1.0Hz Frequency sweeping can be set within specified scope; upward/downward direction selectable
      Protection Functions Overvoltage, overcurrent, detuning, zero position, flashover, emergency stop, undervoltage Overvoltage, overcurrent, zero start, system detuning/flashover protection with adjustable values
      Data Storage Non-volatile memory stores 50 test records; USB output and printing Data can be saved with data number for identification and search
      Technical Feature Automatic voltage stabilization, frequency curve and voltage curve visualization DSP platform technology for function upgrade and humanized interface
      Portability Large-capacity high voltage configuration for demanding tests Single piece weight no more than 40kg, convenient for field service

      Inquiry Workflow

      Simple process from technical requirements to quotation
      • 7544906

        Submit Test Requirements

        Share test object, capacitance, voltage level, withstand time, site power supply and application scenario.
        01
        inquiry_shape
      • 3208369

        Get Model Confirmation

        KVTESTER confirms ZCVF configuration, reactor combination,
        accessories and documentation.
        02
        inquiry_shape
      • 2822667

        Receive Price & Datasheet

        Get quotation, datasheet, delivery time and support details for procurement.
        03
        inquiry_shape
      Looking for a Variable Frequency Resonant Test System?

      ZCVF series resonant test systems help field engineers complete high-voltage AC withstand testing with lower power capacity, lighter equipment, safer protection and more visualized operation.

      Get Quote & Datasheet