STM32 50V-2KV High Voltage Power Supply NCP1351To test the electrical resistance of insulators, a voltage source is required. The required output voltage depends on the type of material being tested. In this case it is a source of adjustable output voltage in the range of 50V to 2kV sine wave with a frequency of 50Hz. The power supply should be short-circuit proof (protection of the power supply in case the test insulation sample breaks through) and the maximum current should be limited to a level to avoid electric shock, but the capacity of the test sample should not cause current limitation.
This value cannot yet be determined, as it depends on the size of the electrodes attached, the permittivity of the test sample and its thickness. We will work with 15mA. The source will be set up with a PC via USB. The actual (measured) current and voltage values are sent to this control computer. For safety reasons the output voltage must be galvanically isolated from the mains voltage.