360V/5KA/150HZ Withstand Voltage Test Device - Yangzhou Darui
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360V/5KA/150HZWithstand Voltage Test DeviceIt is used to conduct insulation strength tests at specified voltages on various electrical products, electrical equipment, insulating materials, etc., to assess the insulation level of products, discover insulation defects in test objects, and measure their ability to withstand overvoltages. It is essential equipment for power supply enterprises, large factories, metallurgy, power plants, railways, and other departments requiring electrical maintenance. It is widely used in electrical manufacturing departments, power operation departments, scientific research institutions, and universities. The power frequency withstand voltage test device is divided into integrated devices (below 30kV) and split devices. The control box (console) consists of a contact voltage regulator (above 50kVA, it is an electric column voltage regulator) and its control, protection, measurement, and signal circuits. It connects to a 220V or 380V power frequency power supply, adjusts the voltage regulator (i.e., the input voltage of the test transformer), connects to the primary winding of the high-voltage test transformer, and obtains the required high test voltage value based on the principle of electromagnetic induction. According to test regulations, various large power transformers, power cables, steam and hydro generators, and other capacitive equipment must undergo regular AC withstand voltage tests. The power frequency withstand voltage test device is the basic test equipment for power stations, power supply and distribution systems, scientific research units, and other users.
Working Principle:
The control part of the power frequency withstand voltage test device consists of modules such as PLC configuration screen, high-speed Cortex microprocessor chip, 16-bit AD sampling chip, precision voltage regulator, speed-regulating motor, and high-precision transformer. It connects to the control console via a power frequency AC220V (380V for above 10KVA) power supply, and the processing chip controls the voltage regulator to adjust 0～220V/430V voltage input to the primary winding of the test transformer. According to the principle of electromagnetic induction, the secondary (high-voltage) winding obtains a voltage amplitude equal to the ratio of turns between the secondary and primary windings – power frequency high voltage. This power frequency high voltage can be rectified by high-voltage silicon stack and filtered by capacitors to obtain DC high voltage, where the amplitude is twice the effective value of the power frequency high voltage. Intelligent adjustment is performed based on the feedback of voltage and current. When abnormal conditions occur, the high-speed processor will perform overcurrent protection, cut off the main output circuit, and give audible and visual alarms.
The power frequency withstand voltage test device is widely used in electrical manufacturing departments, power operation departments, scientific research institutions, and universities. The power frequency withstand voltage test device is divided into integrated devices (below 30kV) and split devices. The control box (console) consists of a contact voltage regulator (above 50kVA, it is an electric column voltage regulator) and its control, protection, measurement, and signal circuits. It connects to a 220V or 380V power frequency power supply, adjusts the voltage regulator (i.e., the input voltage of the test transformer), connects to the primary winding of the high-voltage test transformer, and obtains the required high test voltage value based on the principle of electromagnetic induction. According to test regulations, various large power transformers, power cables, steam and hydro generators, and other capacitive equipment must undergo regular AC withstand voltage tests.
Technical Features
* Small size, light weight, especially suitable for on-site use;
* Overvoltage, overcurrent, discharge, overheat, and zero-start protection are comprehensive and reliable, with an action time of 1 microsecond;
* Passed strict type test appraisal by the national authoritative department - Power Industry Electrical Equipment Quality Inspection and Testing Center (Wuhan High Voltage Research Institute), with reliable quality, ensuring the safety of test personnel, test objects, and test equipment itself;
* Meets national standard requirements: has peak/√2 monitoring function, can monitor test waveform in real time;
* One-key mouse-style knob "foolproof" operation, large screen LCD display;
* Unique software calibration function, convenient for users to calibrate meters, ensuring accuracy of high voltage values
* The device comes with a built-in micro printer, which can print and save test data in time;
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.!
