stvsas
Member
I had something really strange hahppen to me yesterday. We have(had) a 1.5 KVA transformer to drop 480 volts down to 110 volts. The 110 is for controls and some auxilary devices. I put my voltmeter on the low voltage and read 55 volts. I then checked the fuses. The secondary fuse is OK, but one of the primary fuses reads a resistance around 1.5 meg and there is avoltage drop across the fuse. About 235 volts. I change the fuse and got the same result. I know the fuse was good when I put it in, but as soon as I power up, I got what I would call half a fuse. Changed out the xfmr and all was well. Has anyone ever seen anything like this? I don't know!