When selecting a series resonant AC withstand voltage test device, multiple factors need to be considered comprehensively to ensure that the selected equipment can meet the test requirements and ensure the accuracy and safety of the test results. Here are some key selection steps and considerations:
1. Determine the test sample and its parameters
①Subject type: Firstly, identify the type of electrical equipment that needs to be tested, such as transformers, GIS systems, power cables, etc.
②Technical parameters: Understand the basic parameters of the test sample, such as voltage level, capacity, frequency, working time, as well as any special test environment requirements (such as high and low temperature environments).
2. Consider the main performance indicators of the equipment
①Voltage level: The voltage level of the series resonant AC withstand voltage test device should be the same as or higher than the voltage level of the test object. For high-voltage power equipment, it is usually necessary to select equipment with high voltage levels for testing.
②Capacity: The capacity of the equipment should be selected based on the capacity of the test sample and the testing time. The capacity should be large enough to meet the testing requirements, while avoiding being too large to affect the mobility and economy of the equipment.
③Frequency: The frequency of the device should be the same as or higher than the frequency of the test sample. The frequency of power equipment is usually 50Hz, so the selected equipment should also match this.
④Field strength: The field strength of the equipment should be able to reach the required test field strength for the test sample. The required field strength varies for different devices and needs to be selected according to specific requirements.
⑤Temperature rise: The temperature rise of the equipment should be lower than the maximum temperature rise that the test sample can withstand. When choosing a device, attention should be paid to its heat dissipation performance and thermal capacity.
