The fuses in the DCS control room of the chemical plant keep blowing – both the 1A fuses and the 2A fuses; the UPS can handle no more than 4A.
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The fuses in the DCS control room of the chemical plant keep blowing; those rated at 1A blow, and even those rated at 2A blow as well. The UPS in the control room must not exceed 4A. At present, the design for our company’s main step-down substation specifies that the current capacity must be no less than 4A, and this requirement conflicts with the design of the DCS control room. Seeking advice from experts? I’m not an electrical engineering specialist, so I don’t understand anything about this. Can it be solved by installing some kind of device?
It is still necessary to look for problems with leakage grounding; the focus is on the relays, and those whose proper functioning cannot be guaranteed should be replaced and tried out. There is also the detection of plugins. Ground wires at various points, cable breaks,,, for reference.
This still needs to be checked carefully; it’s no joke. A company experienced a failure in its device control system due to excessively low fuse settings in the control room; after switching to the backup circuit, all circuits returned to their factory settings. . . . . :L
Well, we haven’t started production yet; at the moment we’re worried about how to solve this problem
First, determine whether there is a short circuit; frequent failures must indicate the presence of a short circuit； Also, measure the current to see if it is greater than 2A.
Thank you very much. The reason identified so far is an excessive current, which is a design flaw