In the whole process of maintenance circuit or main power circuit, sometimes it is necessary to temporarily disconnect the power supply system of the power module in order to carry out the safe test operation. Repair all normal power supply systems of the power module only after the main power circuit is repaired or the circuit is determined to be trouble-free.

Due to the different manufacturers in the reasonable layout of the components installation, some models, independent disconnect the power module control module power supply system, very convenient, such as take off the fast fuse tube, that is enough to establish.

So that the safety of the actual operation of the test machine, often what method? Let's take a look:

Usually the power supply system of the power module, therefore, the dc530V power supply system is obtained from both sides of the energy storage technology through the terminal row, or the PCB circuit board copper foil is imported immediately. Even for the former, finding copper foil for the power supply and temporarily disconnecting it is very simple.

If the power module power supply system is not easy to disconnect, then is it possible to take a circuitous route and put the power supply circuit of the power module power supply system on one side in that way, is it possible to exceed the same goal?

We all know that when there is an anomaly in the optocoupler or main power circuit, the power module will be destroyed due to the charging and discharging kinetic energy of the DC control circuit capacitors.

Therefore, if the energy storage technology capacitor is temporarily removed, and then connected with a 1A fuse in the bare machine DC power supply system branch, such an electrification experiment always has a natural safety barrier. When an exception occurs, the power module will be properly maintained.

After repair, weld the capacitor back to the circuit board. Medium and power, because the group is independently placed, no need for welding, it is more convenient to solve. By doing so, people can carry out the practical operation of the test machine safely without having to disconnect the power supply system from the power module.