AC voltage resistant very low frequency generator? Wuhan UHV specializes in producing AC withstand voltage very low frequency generators, with a wide range of product options. When looking for an AC withstand voltage very low frequency generator, choose Wuhan UHV.         

The very low frequency insulation withstand voltage test is actually an alternative method to the power frequency withstand voltage test. When conducting power frequency withstand voltage tests on large generators, cables, and other test samples, it can replace large capacity resonant transformers. The very low frequency high voltage generator of Huatian Power is integrated with modern digital frequency conversion advanced technology, using microcomputer control, and fully automated for boosting, lowering, measuring, and protecting. 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 print test reports.

Test principle

This test device is mainly designed and manufactured for electrical withstand voltage testing of all electrical main equipment such as 10kV, 35kV, 300MW thermal power generators, 10kV, 35kV power transformers, and lines. The ultra-low frequency insulation withstand voltage test is actually an alternative method to the power frequency withstand voltage test. We know that when conducting power frequency withstand voltage tests on large generators, cables, and other test samples, large capacity test transformers or resonant transformers are required due to the large capacitance of their insulation layers. These huge devices are not only bulky and expensive, but also very inconvenient to use. In order to solve this contradiction, the power department used a complete set of 0.1Hz ultra-low frequency high-voltage generator test equipment and adopted the method of reducing the test frequency to reduce the capacity of the test power supply, thus greatly simplifying the difficulty of on-site testing. From years of theoretical and practical experience both domestically and internationally, it has been proven that replacing the power frequency withstand voltage test with a 0.1Hz ultra-low frequency withstand voltage test not only achieves the same equivalence, but also greatly reduces the size and weight of the equipment, with a theoretical capacity of about one fifth of the power frequency.

Product Features

1. The experimental current, voltage, and waveform data are directly obtained through real-time sampling on the high-voltage side, so the data is true and accurate

2. System overvoltage protection: When the device output exceeds the set voltage limit value, the instrument will shut down for protection, with an action time of less than 15 milliseconds

3. System overcurrent protection: designed as multiple protection for high and low voltage software and hardware, with precise shutdown protection on the high voltage side 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 15 milliseconds

4. The protection resistor on the high-voltage side of the system is designed inside the boost body, so there is no need to connect another protection device outside the system

5. This system adopts a high and low voltage closed-loop negative feedback control circuit, so the output has no capacitance rise effect

6. The high-voltage control part of this system adopts our company's innovative light controlled high-voltage switch unit, which controls accurately, safely and reliably

7. This device adopts a color human-machine interface touch control and control modular software operating system, which is precise and intuitive

8. This device is versatile and can simultaneously measure the capacitance, insulation resistance, leakage current, and AC withstand voltage test of the test sample.         

The high-voltage withstand voltage test of electrical equipment is one of the most important items specified in the "Insulation Preventive Test". Voltage withstand test can be divided into AC voltage withstand test and DC voltage withstand test. AC voltage withstand test can also be divided into power frequency, frequency conversion, and 0.1HZ very low frequency testing technology. 0.1HZ very low frequency technology is the latest technology recommended by the International Electrotechnical Commission. Although the DC withstand voltage test equipment has the advantages of small size, light weight, and low cost, the DC withstand voltage test also has the greatest damage to the insulation of the tested object. Therefore, the latest regulations on preventive testing of electrical equipment issued by the country have explicitly stipulated that DC high voltage will no longer be used for voltage withstand testing of electrical equipment, and AC voltage withstand testing is recommended.