MEP 804 A under voltage Issue

[Scott Warren]

Just purchased a MEP804A a few months ago, had installed a 30kv transformer as to keep unit 3 phase and be able to run single phase to house.
All was good until last week when I started unit and got a under voltage light on panel... Traced back to FU2 which was bad. Only porblem was when I pulled fuse I messed up label on fuse.
TM does not tell what size or amp fuse is...I can only make out 100kva and 500v... I replaced temporarily with a 20 amp fuse and all is running well, but I have read in other posts that it may only be a 3 amp fuse...
CAN ANYONE CONFIRM FUSE SIZE PLZ....THANKS IN ADVANCE

 

[kloppk]

FU2 would be a 3 amp fuse.
KTK-3 I believe.
Replace the 20 amp one with a 3 amp or risk burning out the static exciter.
If FU2 blew it may be a sign your AC Voltage Regulator is failing. Normally FU2 should not blow unless there is an issue.

 

[Guyfang]

It can blow, if someone holds the S1 up in the run position for very long times. Like for troubleshooting.

 

[jamawieb]

Or KLDR3 for FU2. Either Kurts or that part number will work. Be careful putting that large of a fuse in there, like Kurt mentioned.