Photovoltaic controller Photovoltaic controller is the key equipment used to...
Inverter common faults and solutions
Inverter as an energy conversion device, in the process of use may encounter a variety of failures, the following is a detailed description of several common failures, causes and solutions you mentioned:
Low insulation impedance
Cause: The external environment is humid, resulting in reduced insulation of the inverter to the ground; The DC connector may have a water-soaked short-circuit support, and black spots on the edge of the component burn, resulting in leakage to the ground grid.
Solution: Start the fan to dehumidify, check and rectify the water leakage of the DC connector, check whether the component is damaged, and replace it.
The bus voltage is low
Reason: the grid impedance is too large, resulting in photovoltaic power generation can not be effectively digested or transmitted; The output cable is too long or too thin to increase impedance.
Solution: Increase the specifications of the output cable (thicker cable, lower impedance), minimize the distance between the inverter and the connecting point, and reduce the cable length.
The leakage current is faulty
Cause: The inverter detection board may be faulty.
Solution: Replace the inverter detection board.
Dc overvoltage protection
Cause: Components such as IGBT are faulty or the power grid is abnormal, causing the inverter to fail to adjust the output voltage in time.
Solution: Check and replace the IGBT board or other related control parts.
No response is received when the device is powered on
Cause: The DC cable between the bus box and the inverter may be grounded.
Solution: Find and dispose of the grounding point of the cable, and replace the cable if necessary.
The power grid is faulty
Cause: The quality of the power grid is unstable, or the inverter has problems synchronizing with the power grid.
Solution: Check the power grid voltage and frequency stability to ensure that the inverter Settings match the power grid parameters; If the inverter has synchronization problems, you need to reconfigure or adjust related Settings.
Home energy storage product series
A lithium battery pack for home energy storage systems, which is compatible with solar panels and the sun The inverter can work together with the power grid to power household appliances, and it can also be used as a For off grid systems.
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