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  1. VinnyPs

    Wierd problem with a VFD

    Hi again, It was all good until..... it happened again. The fuses of the 5HP blow again. After 1 week of running I got called, the fuses are blown. Do you guys have any idea of what should I do next? A RLC filter on the input? Output reactors? When I change the fuses, they hold, but for how...
  2. VinnyPs

    Wierd problem with a VFD

    First, thanks a lot for all your replies. The manufacturer of the drives is AC Tech, The fuses are fast acting (as suggested by manufacturer) and the size of the fuses are 10A for the 2HP and 15A for the 5HP. AC Tech suggested using reactors in the following situations: 1. The supply power is...
  3. VinnyPs

    Wierd problem with a VFD

    I have a control panel with 3 VFD. Two of them are 2HP and the other one is a 5HP. The VFDs are 600V, 3PH. From the main I go through a fusebox that protects my VFDs. There is one fuse for each phase of each VFD, so there is 9 fuses in all. Nothing is plugged at the exit of the VFDs. As soon as...

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