Frequency converter (Variable-frequency Drive, VFD) is a circuit to change the motor operating power frequency to control the AC motor power control equipment, internal mainly by the complex circuit board, electrical components, if the inverter in the shelf for more than half a year, may be due to the placement environment, inverter service life, load rate and other factors, resulting in the chances of damage to the inverter greatly increased, the following Xiaobian on the idle inverter failure, and how to properly store the inverter to everyone collated the following content.

First of all, inverters that have been idle for more than six months are prone to failure.

      Idle inverter may appear these situations, 1, after the equipment is powered on, the inverter blows up, the front circuit breaker jumps off. 2, after starting, the inverter panel does not display. 3, the inverter starts normal operation, but after the operation reported fault. 4, the inverter starts normal operation, but after the operation blows up. The main possible reason is that the inverter is not placed in a proper environment, such as in a humid and dusty environment. Because the inverter is composed of rectifier module, IGBT and electrolytic capacitor and other major components, including electrolytic capacitor if long-term non-energy, will lead to electrolytic capacitor electrolyte dried up, so that the capacity decreases, leakage increases. This will cause the switching power supply to operate abnormally or be damaged when the inverter is powered on, and in serious cases, it will lead to the electrolytic capacitor of the main circuit being damaged, resulting in the explosion of the inverter.

Second, how to eliminate the inverter energization fault after long-term idleness

      Use special equipment to charge the inverter regularly and check the input and output ports more safely and effectively. 220V voltage is supplied to 380V inverter (110V voltage is supplied to 220V inverter), and the voltage rises slowly from 0V to 220V. the duration is confirmed according to the power of the inverter. Then, supply 380V (220V) to the inverter and check the input voltage. Only +/- 3% error is allowed.

Finally, how should we store the inverter correctly

      If the inverter is not used for a long time, the inverter is placed in a packing box for storage, and the ambient temperature is within the range of -20～40℃ degree. The ambient temperature is -10～40℃. Higher than 40 ℃ due to temperature difference reduction caused by the heat dissipation conditions become worse, each increase of 1 degree to reduce the capacity of 2.5% (or 2%), the maximum ambient temperature should not exceed 55 ℃. Long-term storage in an environment containing corrosive gases and liquids should be avoided. Long-term storage, should be regularly (within 6 months) energized, energized moment for at least 5H, input voltage with regulator slowly rise to rated value. If the storage period exceeds 10 years, the rubber for sealing of electrolytic capacitor will fail and must be replaced with new one. No dust, corrosive gas, combustible gas, no direct sunlight. Vibration acceleration should be less than 0.6g.

To put it simply: dustproof, moisture-proof, anti-corrosion, avoid direct sunlight -10～40℃, regular charging.

     People are still unclear, you can contact us directly, if you buy the Everest inverter, we have a strong service team to provide you with lifelong inverter repair and maintenance services.