SG-1
Senior Member
- Location
- Ware Shoals, South Carolina
Has anyone heard of harmonics causing a medium voltage "E" fuse in the 1-5 amp range to have a catastrophic failure ( blown in half ). The two halves look like a laser beam hit them in places. The fuse sits right on top of an epoxy cast CPT (5kva), so it is directly exposed to the heat generated by the transformer. The CPT & fuses are drawer mounted. The transformer looks fine except for the scorch left by the fuse when it ruptured & the windings are intact enough pass a polarity test. It will be scrapped later. The insulation on the transformer lead that connected to the fuse shows thermal damage on the first 3 inches where it was connect to the fuse.
I have known transformers to fail because of harmonics, but never heard of any fuses.
I have known transformers to fail because of harmonics, but never heard of any fuses.