Cable Limiter Lugs
Cable Limiter Lugs
(OP)
For those of you who do Short Circuit Studies, what is the current thinking in considering cable limiter lugs installed by the utility on their transformers? Should the study be done with taking into account any current limiting ability for a worst-case condition? Is there anything written on including or excluding limiter lugs in studies? Thanks






RE: Cable Limiter Lugs
RE: Cable Limiter Lugs
That was the answer i was looking for. Thanks
RE: Cable Limiter Lugs
See the enclose link for additional information.
http://www.bussmann.com/library/bifs/1042.pdf
RE: Cable Limiter Lugs
RE: Cable Limiter Lugs
RE: Cable Limiter Lugs
* Limiters protect cable by “limiting” the thermal damage of the cables insulation under fault conditions.
* In spot network transformers, limiters often coordinate with the secondary fuse.
* Their current-limiting feature can be used to minimize arc flash hazards by reducing the magnitude of the arc flash current and the time of the arc flash exposure according with Copper/Bussmann publication.
For coordination purposes, see a sample of TC characteristics curve below and the let through current in the previous link