The ultra-low frequency high-voltage generator, with its unique technical characteristics, has demonstrated significant advantages in the field of industrial testing, mainly reflected in five aspects: safety, portability, detection efficiency, environmental adaptability, and intelligence. The following is a specific analysis of advantages:
1. Security: Non destructive testing to reduce the risk of equipment damage
① Reduce the polarization effect of the insulation layer
a. The traditional power frequency withstand voltage test (50Hz) generates high-frequency polarized current, and long-term testing may accelerate the aging of the cable insulation layer and even cause hidden damage.
b. Ultra low frequency (0.1Hz) voltage: The frequency is reduced by 500 times, and the polarization current is significantly reduced to avoid cumulative damage to the insulation layer of cables, motors, and other equipment, achieving non-destructive testing.
② Multiple security protection mechanisms
a. Overvoltage protection: Real time monitoring of output voltage, cutting off power within 0.03 seconds when exceeding the limit.
b. Overcurrent protection: automatically limits current output to prevent equipment overload.
c. Flashover protection: Stop immediately when insulation breakdown is detected to avoid safety accidents caused by sparks.
2. Portability: Lightweight design, suitable for complex scenarios
① Significant reduction in volume and weight
a. Theoretical capacity advantage: The theoretical capacity of ultra-low frequency equipment is only 1/500 of that of power frequency equipment, and its volume is reduced to one tenth of that of traditional equipment.
b. Modular structure: The controller and booster are designed separately for easy disassembly and transportation. For example, the GDVLF series controller from Wuhan Guodian Xigao weighs only 6kg, with a 25kg booster, and can be installed outdoors by a single person.
② Adapt to working in confined spaces
The compact design can enter narrow environments such as cable trenches and tunnels, solving the problem of traditional power frequency equipment being unable to be deployed due to its large size.
3. Detection efficiency: shorten the cycle and improve operation and maintenance capabilities
① Efficient voltage withstand test
a. Time reduction: Under ultra-low frequency voltage, the cable withstand voltage test time is only 1/5 of the power frequency. For example, a 10 kilometer long cable requires 8 hours for power frequency testing, while ultra-low frequency testing only takes 1.6 hours.
b. Load capacity improvement: The maximum load capacity is 1.1 μ F at 0.1Hz and 5.5 μ F at 0.02Hz, which can simultaneously detect multiple cables and further shorten the cycle.
② Accurately locate defects
Oscillatory wave superposition technology: By superimposing high-frequency oscillatory waves, the partial discharge signal of weak insulation points is amplified, and the positioning accuracy reaches centimeter level.
4. Environmental adaptability: wide temperature range operation to cope with extreme conditions
① Wide temperature tolerance range
a. Low temperature performance: Supports operation in -40 ℃ environment, suitable for extreme cold scenarios such as the Arctic and plateau. For example, in the detection of wind farms in Qinghai, the equipment stably outputs a voltage of 50kV at -35 ℃.
b. High temperature performance: With military grade heat dissipation modules, it can work continuously at a high temperature of 70 ℃, meeting the environmental requirements of deserts, refineries, and other places.
The ZC-524C ultra-low frequency and high voltage generator combines modern digital frequency conversion advanced technology and adopts microcomputer control. The boosting, lowering, measurement, and protection are fully automated, and manual intervention can be performed during the automatic boosting process. Due to its full electronic design, it has a small size, light weight, large screen LCD display, clear and intuitive display, and a printer that outputs test reports. The design indicators fully comply with the standards of the power industry and are very convenient to use.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
