Transformer Protection

[Plinko]

I'm looking for the 'K' factor for a S&C SMU-20 fuse link. At one of my rural substations I'm using 65E (Slow) fuses for my high side protection and 3 single phase 50A type E hydraulic reclosures (1A-3B)on the low side for feeder protection. I've been using page 111 of my Cooper "Electical Distribution-System Protection" book to establish the 'K' factor and coordination for T-link fuse-reclosure coordination and was wondering if there is any literature on S&C's silver/E-type fuses...
Please advise...

 

[tgott]

You might try

http://www.sandc.com/products/smd_od/smd_od.asp

 

You may have to contact the respective manufacturer's manual for it.