TH series withstand voltage insulation test instrument


Product performance

  • Product description
  • Products parameter
  • Products features
  • Working principle
  • Fulfill the standard
  • Scope of application

    The TH9310/TH9320 series is a high-performance voltage withstand testing instrument, suitable for household appliances, transformers, motors, new energy vehicle electronic components, medical equipment, and related fields. It supports AC/DC voltage withstand testing, insulation resistance testing, and arc detection functions. Equipped with rapid discharge capabilities, data storage, and multiple interface configurations, it meets the requirements of industrial automation testing.


    Pressure Test
    > Output Voltage: AC   0.05kV - 5.00kV    ±2%
                                 DC  0.05kV - 6.00kV    ±2%
    > Current Test Range:  AC  TH9310/B:0mA - 10.00mA ±(2% reading+5 digit) 
                                               TH9320:0mA - 20.00mA ±(2% reading+5 digit)
                                        DC  TH9310:0μA - 5.00mA   ±(2% reading+5 digit)
                                               TH9320:0μA - 10.00mA  ±(2% reading+5 digit)
                                      Quick Discharge Function: Automatic discharge after testing (DCW) 

    Insulation Resistance Test
    > Output Voltage:0.10kV - 1.00kV ±2%
    > Resistance Test Range:0.1MΩ - 10.0GΩ
    > Resistance Test Precision:  0.10MΩ - 999MΩ Range±10% +2 digit
                                                  1.00GΩ - 10.0GΩ Range±20% +2 digit
    > Discharge function: Automatic discharge after testing

     Arc detection
    > Measurement range (corresponding current): 1mA-20mA

     General parameters
    > Voltage rise time:0.1s-999.9s
    > Test time setting (AC/DC):0.2s-999.9s
    > Voltage drop time:0.1s-999.9s
    > Waiting time (IR):0.2s-999.9s
    > Memory:20 test files, each file can store 20 test steps 

    Interface configuration
    > Standard RS232, USB DEVICE (computer interface), USB HOST (U disk interface), HANDLER, supports MODBUS protocol


    • 480×272 TFT-LCD display 

    • Rapid discharge and arc detection 

    • Enhanced human protection: Electric shock protection 

    • Stores 20 test files, each containing 20 test steps with customizable testing modes 

    • Customizable voltage rise time and test duration within 999.9 seconds for DC withstand voltage testing 

    • New interface with user-friendly panel design, upgradeable via USB 

    • Keyboard lock feature supports PLC interface


    Applicable standards: Comply with general specifications for electrical safety testing (e.g. IEC 61010)

    • Safety testing of household appliances and electric heating appliances

    • Voltage resistance verification of electronic components for new energy vehicles

    • Insulation performance testing for medical equipment and lighting industry