GDVLF-60 VLF AC Hipot Test Set for Cable-cable tester 

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    GDVLF-60 VLF AC Hipot Test Set for Cable hits:

    Product Description

    Withstand voltage test is an essential preventive test for electrical equipment. It is divided into two parts: AC and DC withstand voltage test. AC test can be further divided into power frequency, variable frequency and 0.1Hz very low frequency test, among which the last one is highly recommended by IEC, due to its remarkable advantages.

    Following is a comparison for DC, Power Frequency, Variable Frequency, and 0.1Hz test.

     

    Aspects

    DC

    Power Frequency

    Variable Frequency

    0.1Hz

    Equivalency

    poor

    good

    good

    good

    Insulation Damage

    strong

    slight

    slight

    slight

    Operation Safety

    relatively low

    relatively low

    relatively low

    high

    Wiring Difficulty

    complicated

    complicated

    most complicated

    simple

    Volume

    smallest

    largest

    large

    small

     

    In fact VLF test is the substitute for power frequency test. It is suitable for testing electrical equipment with large capacitance. 


    Features

    • Small size and light weight. Big LCD screen and built-in printer.
    • 0.1Hz, 0.05Hz and 0.02Hz can be chosen, which ensures a wide test range.
    • It realizes the fully automatic voltage boost, step-down, measurement and protection as well as the manual intervention in the process of automatic voltage boost.
    • Overvoltage protection and over-current protection. Action time is no longer than 20ms.
    • Data of current, voltage, wave form can be directly sampled at high voltage side, so the data is real and accurate.
    • A high voltage output protective resistor is provided in the voltage boost body in the design and this eliminates the need of additional protective resistor connected outside.
    • Closed-loop negative feedback circuit is adopted. No capacity rising during outputting.


    Specifications

    • Peak voltage: 60kV
    • Test frequency: 0.1Hz, 0.05Hz and 0.02 Hz (selectable)
    • Fuse: 10A
    • Maximum load capacity: 0.5μF at 0.1Hz; 1μF at 0.05Hz; 2.5μF at 0.02Hz
    • Power supply: 220V ±10%, 50Hz ±5% (If using a portable generator, make sure the output voltage and frequency are stable. Power >3kW.)
    • Output voltage accuracy: peak voltage instability 1%; frequency instability 3%; waveform distortion: <5%.
    • Working environment:  indoor or outdoor; -10℃-+40℃; 85%RH
    • Weight: Control unit - 5kg; HV unit I: 40kg; HV unit II: 48kg.

    Remarks: Capacitance of test object can not be larger than the maximum value of the test instrument. If capacitance of test object is smaller than 0.05μF, the hipot should be equipped with an auxiliary device (supplied by HV HIPOT at your option).



    CONTACT US
    Address: F/10, Block B7, JinYinTan Modern Enterprise City, Dongxihu District, Wuhan, China
    Email: info@hvhipot.com
    Skype: hvhipot@hotmail.com
    Tel: +86-27-85568138
    Fax: +86-27-65606183
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