JHVLF-80KV series ultra-low frequency AC high voltage test device

JHVLF-80KV series ultra-low frequency AC high voltage test device

Product Introduction

1JHVLF-80KV series ultra-low frequency AC high voltage test deviceSpecification: 80KV/0.5 μ F (intelligent/fully automatic), suitable for testing 35kV voltage cables, power capacitors, large and medium-sized generators, and motors.

2. Combining modern digital frequency conversion technology, using microcomputer control, automatic boosting, lowering, and discharging, with photoelectric control output of 0.1HZ sine wave, and manual intervention during the automatic boosting process. Due to full electronicization, it has a small size and light weight, with a large screen LCD display that is clear and intuitive, and can display output waveforms with printed output. The design indicators * comply with the power industry standard of "General Technical Conditions for Power Equipment Testing Instruments, Part 4: General Technical Conditions for Ultra Low Frequency High Voltage Generators", and are very convenient to use.

Nowadays, both domestically and internationally, mechanical methods are used for modulation and demodulation to generate ultra-low frequency signals, resulting in non-standard sine wave waveforms, large measurement errors, spark discharge in the high-voltage part, bulky equipment, and high-power high-voltage resistors for discharge shaping in the second and fourth quadrants of the sine wave. Therefore, the overall power consumption of the equipment is relatively high. This product can overcome these shortcomings, and the protection function design is as follows:

3. Overvoltage protection: When the set test voltage value is exceeded by 10% (or 1.1 times), the instrument will shut down for protection, with an action time of less than 20 milliseconds.

4. Overcurrent protection: designed as a dual protection system for high and low voltage, the high voltage side can provide shutdown protection according to the set value; When the current on the low-voltage side exceeds the rated current, a shutdown protection will be implemented, with an action time of less than 20 milliseconds.

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Product alias

Programmable ultra-low frequency high voltage generator, intelligent ultra-low frequency high voltage generator, 0.1hz ultra-low frequency high voltage generator, 0.1hz programmable ultra-low frequency high voltage generator, ultra-low frequency generator, ultra-low frequency withstand voltage device, ultra-low frequency high voltage device, ultra-low frequency high voltage generator, 0.1Hz ultra-low frequency high voltage generator, program-controlled ultra-low frequency high voltage generator, ultra-low frequency AC high voltage test device, ultra-low frequency withstand voltage test device

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JHVLF-80KV series ultra-low frequency AC high voltage test device

Product Features

1JHVLF-80KV series ultra-low frequency AC high voltage test deviceCombining modern digital frequency conversion technology, adopting microcomputer control, boosting, lowering, measuring, and protecting automation, and capable of manual intervention during the automatic boosting process. Due to full electronicization, it has a small size, light weight, large screen LCD display, clear and intuitive display, and can display output waveforms and printer output test reports. The design indicators * comply with the power industry standard of "General Technical Conditions for Power Equipment Testing Instruments, Part 4: General Technical Conditions for Ultra Low Frequency High Voltage Generators", and are very convenient to use.

2. Nowadays, both domestically and internationally, mechanical methods are used for modulation and demodulation to generate ultra-low frequency signals, resulting in non-standard sine wave waveforms, large measurement errors, spark discharge in the high-voltage part, bulky equipment, and high-power high-voltage resistors for discharge shaping in the second and fourth quadrants of the sine wave. Therefore, the overall power consumption of the equipment is relatively high.

3. From years of theoretical and practical experience both domestically and internationally, it has been proven that using ultra-low frequency AC high voltage testing equipment instead of power frequency withstand voltage testing not only achieves the same equivalence, but also greatly reduces the size and weight of the equipment. In theory, the capacity is about one fifth of the power frequency, and the operation is simple, making it more efficient compared to power frequency testing. That's why developed countries generally adopt this method.

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JHVLF-80KV series ultra-low frequency AC high voltage test device

Product Parameters

Single phase electrical capacity of different types of generators

Capacity of cross-linked polyethylene insulated single core power cable (μ F/km)

Optional Table

Test method for ultra-low frequency withstand voltage of cables