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MV RMU using Time lag Fuse conforming to ESI 12.6 standard

MV RMU using Time lag Fuse conforming to ESI 12.6 standard

MV RMU using Time lag Fuse conforming to ESI 12.6 standard

(OP)
Dear all,
Any idea how well is the MV RMU (especially 11kV) using LV TLF performing in the industrial/utility company worldwide ?  Our company has recently attempted to use this type of RMUs but somehow we have difficulties in sourcing for the fuse-link.  It appears that only GE can produce this type of fuse-link and there is not much saving in term of fuse-link cost as compared to MV fuse-link.  Are this type of RMUs getting phase-out?  Your comment & experience is highly appreciated.

RE: MV RMU using Time lag Fuse conforming to ESI 12.6 standard

The company I work for manufactures in excess of 500 ring main units a month that use TLF fuses in the protection system, so they are not being phased out. Although we do have options that use a relay.

The fuses that are generally used are an XF type (not sure of the make)but they are readily available and I would expect them to be significantly cheaper than a MV fuse.

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