The TE-CDP ultra-low frequency high voltage generator is mainly designed and manufactured for non-destructive insulation withstand voltage tests of cables and motors with voltage levels of 35kV and below.
It is mainly used for plastic power cables such as PE (polyethylene) / XLPE (cross-linked polyethylene) with voltage levels of 35kV and below. It is suitable for power departments and power cable maintenance departments. It combines modern digital frequency conversion advanced technology, adopts microcomputer control, and fully automates voltage boosting, voltage reduction, measurement, and protection. Due to full electronization, it is small in size and light in weight, with a large screen LCD display that is clear and intuitive, and can display output waveforms and print test reports.
◆ Current, voltage, and waveform data are all directly sampled from the high-voltage side, so the data is accurate;
◆ It has overvoltage protection function. When the output exceeds the set voltage limit, the instrument will stop for protection, with an action time of less than 20ms;
◆ It has overcurrent protection function: designed with dual protection on both high and low voltage sides. The high-voltage side can perform precise shutdown protection according to the set value; when the current on the low-voltage side exceeds the rated current, shutdown protection will be performed, with action times both less than 20ms;
◆ The high-voltage output protection resistor is designed inside the boosting body, so there is no need to connect an external protection resistor;
◆ Due to the adoption of high and low voltage closed-loop negative feedback control circuits, the output has no capacitive rise effect.
◆ Good equivalence: scientific theory and practice have proven that 0.1Hz ultra-low frequency withstand voltage tests have good equivalence with power frequency withstand voltage tests.
◆ Small size: theoretically, the capacity is 1/500 of the power frequency, so it is small in size and light in weight.
◆ Low destructiveness: 0.1Hz ultra-low frequency withstand voltage tests will not cause significant damage to insulation like DC withstand voltage tests, and harmful polarized charges will not enter the dielectric.
◆ Advanced technology: adopts power electronic components, microcomputer control, safe and simple, easy to operate, and reliable data.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
