With the continuous improvement of industrial automation, inverters have also been widely used. The factory electrician door deals with the inverter almost every day, but is our use and understanding of the inverter completely correct? Let's take a look at the techniques for extending the service life of the inverter.
1. Ambient temperature: When the temperature is too high and the temperature changes greatly, the internal condensation phenomenon of the inverter is easy to occur, especially when the device is turned on again after the device is turned off. The temperature of the inverter is cooled due to power failure of the inverter. The moisture in the air is cooled and attached to the circuit board, the outer casing and the bronze plate, and its insulation performance is greatly reduced, and may even cause a short circuit accident; if the dust inside the inverter accumulates more at this time, and the repair is not timely When cleaning, the failure rate of the inverter will be very high, and even multiple devices may be damaged at the same time, which directly leads to production stoppage.
2. Working temperature of the inverter: The inside of the inverter is a high-power electronic component, which is easily affected by the operating temperature. Too high or too low temperature will cause the electronic components to work abnormally. In order to ensure the normal operation of the inverter, the inverter cabinet must have a good ventilation and heat dissipation system. The inlet and outlet of the cabinet are not blocked to ensure the normal operation of the fan. jobs.
3. Vibration and shock: Since the internal electrical connection of the inverter is usually screw connection, the wiring between the circuit boards is also a connector. If the vibration of the inverter is large, it may easily lead to poor contact of these components.
4. Dust: The inverter is not suitable for working in dusty environments. Since the inverter itself relies on forced air cooling, dust is more likely to cause the inverter cooling fan to become clogged, and even if the fan is burned, dust will block heat. The air duct discharges heat in time. The inverter does not dissipate heat well, and the working temperature rises, causing the inverter to overheat and stop. In severe cases, the drive will be directly damaged.
5. Power supply: Abnormal power supply is roughly divided into three phases: phase loss, low voltage and over voltage, which directly cause the inverter to be deactivated. The main cause of these anomalies is caused by the transmission line, and sometimes the high-power equipment in the same power supply system is short-circuited to the ground, short-circuited between phases, or started and stopped. In addition to voltage fluctuations, there are three kinds of anomalies in some power grids or self-generator sets: short circuit to ground, phase-to-phase short circuit or fluctuation of start-stop frequency, sometimes recurring in a short time. In order to ensure the normal operation of the equipment, the corresponding requirements for the power supply of the inverter are put forward.