Always check the power supply voltage fluctuation level

whether the shell expansion, bubbling or deformed, rushed to open the safety valve, and the capacitance and leakage current (leakage current, the capacitor will overheat , laptop battery causing red open safety valve, even capacitor explosion), pressure testing, etc., on the capacity was reduced by 30%, and leakage current exceeds 70mA, voltage below 650V capacitor should be replaced. The new capacitor or long idle unused capacitor performance tests should be carried out to meet the requirements before they can be used interchangeably. Improve the use of the environment and load frequency fluctuation phenomenon,

(8) for the rectifier, inverter GTR (or IGBT) and other large carrying capacity of the device to use a multimeter, power bridges Instruments | instrumentation, hardware | tools for detection and pressure test to measure the forward and reverse resistance value and do form to record the difference between the larger parameter module to be replaced.(9) the main contacts and other auxiliary relay examination, careful observation of the contacts of the contactor without pulling movement fox, burrs or surface oxidation, uneven, found that such problems should contact the corresponding replacement movement, to ensure its contact with safe and reliable.

(10) Always check the power supply voltage fluctuation level.  avoid large current impulse of the drive.The application of the drive, only to meet their design requirements and the conditions of normal use, in order to make long-term, safe and stable operation. Laptop battery if it is in poor working environments, we must pay particular attention to the drive routine maintenance and repair work to improve the environment and the inverter load fluctuation phenomenon. In order to ensure that the inverter reliable, stable, safe to play its performance, to achieve speed control operation, save energy and reduce maintenance costs purposes.

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