Universal test machine inverter maintenance skills

Laboratory operators must be familiar with the basic working principle, functional characteristics of the inverter in the electronic universal testing machine, and have common knowledge of electricians. Prior to the routine maintenance of the frequency converter, it must be ensured that the total power supply of the equipment is cut off; and after 3-30 minutes (according to the power of the frequency converter) of the inverter display completely disappears. Attention should be paid to checking the voltage of the grid, improving the surrounding environment of the inverter, motor, and the line, periodically removing dust from the inverter, and minimizing the failure rate of the inverter by strengthening device management. Due to the production characteristics of some companies, the corrosive gas concentration in each electrical mcc room is too large, resulting in many electrical equipment being damaged due to corrosion (including inverters).

In order to solve the above problems, the inverter in the electronic universal testing machine can install an air conditioning system and use positive pressure fresh air to improve the environmental conditions. In order to reduce corrosion of corrosive gases on the circuit board components, inverter manufacturers may also be required to perform anticorrosion processing on the circuit boards, and also to spray anticorrosive agents after maintenance, which effectively reduces the failure rate and improves the use efficiency. While maintaining, carefully check the frequency converter and send power regularly. The low frequency with the motor working at 2hz is about 10 minutes to ensure that the inverter works normally.

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