30kV 40kV 50kV 60kV 80kV VLF Tester

High voltage withstand test of electrical equipment is one of the most important items specified in insulation preventive test.The withstand voltage test can be divided into ac withstand voltage test and dc withstand voltage test. The ac withstand voltage test can be divided into power frequency, frequency conversion and 0.1hz ultra-low frequency test technology, of which 0.1hz ultra-low frequency technology is the latest technology recommended by the current international electrotechnical commission. Our company's new generation of vlf very low frequency cable testing equipment is the core product independently developed with the latest American technology. It adopts 7-inch touch screen, the latest arm7 single chip microcomputer, high-speed ad acquisition circuit, and is equipped with background management software. It is especially suitable for very low frequency test of electrical equipment with large insulation equivalent capacitance (such as power cable, power capacitor, large and medium- sized generator and motor, etc.)

1.Advanced Digital Control Technology: Adopts microcomputer and digital frequency conversion technology, enabling fully automatic voltage boosting, stepping down, measurement, and protection, with optional manual intervention during automatic operation .

2.Precise Data Acquisition: Directly samples voltage, current, and waveform data from the high-voltage side, ensuring true and accurate test results with voltage peak error ≤3% and waveform distortion ≤5% .

3.Multiple Reliable Protections: Equipped with over-voltage (action time <20ms) and high-low voltage dual over-current protection (action time <20ms); built-in high-voltage protection resistor in the booster, no external resistor required .

4.No Capacitance Rise Effect: Utilizes high-low voltage closed-loop negative feedback control circuit to eliminate capacitance rise during output, ensuring stable test performance .

5.Flexible Frequency & Load Capacity: Selectable output frequencies (0.1Hz/0.05Hz/0.02Hz) with maximum load capacity up to 5.5µF (at 0.02Hz), suitable for long-distance cable testing .

6.User-Friendly Operation: Features 7-inch large LCD touchscreen for clear waveform display; supports automatic data storage and built-in printer for on-site test report printing .

7.Compact & Portable Design: Separated controller (4kg) and booster structure, small size and light weight, convenient for indoor and outdoor use .

8.Wide Application Scope: Complies with DL/T849.4-2004 standard, ideal for insulation withstand voltage tests of large-capacitance electrical equipment like power cables, generators, and motors .This vlf equipment delivers stable performance in diverse field testing scenarios.

• One orange portable host case with built-in VLF hipot tester main unit
• One black aluminum alloy protective case with built-in high voltage generator module
• One red high voltage silicone cable with alligator clips
• One red high voltage test cable with insulating terminal
• One black power cable with US standard plug
• One black signal transmission cable with BNC connector
• One set of copper wire test leads with alligator clips
• One red cylindrical high voltage capacitor
• One high voltage discharge rod with insulating handle
• One small black auxiliary cable
• One gold-plated cylindrical test connector
• One power adapter with power cord
• This vlf test set is complete with all necessary accessories for on-site operation