Hi all, One of my colleagues has posed the following questions. He has contacted several fuse manufacturers without much success. Can anyone out there help him out?
I need some ideas/help regarding correct fuse selection. 1. When testing to IEC801-5 surge test, I want to be sure that the fuse will open but not physically disintegrate. There is a MOV directly after the fuse. 2. For fuse selection in an environment threatened by lightning, is IxIxT rating or interrupt rating more important? I assume IxIxT for normal operation and interrupt rating for surge operation. 3. IEC127 Fuse Standard defines interrupt rating between 35A - 1500A @ 250Vac. UL198.G/CSA 22.2 No. 59 defines interrupt rating of 10,000A @ 125 Vac. 4. IEC801-5 calls out waveform Voltage 1.2us/50us 6000V Current 8us/20us 3000A 5. Question - How can I be sure for European fuse application, if I apply 3000A current surge, that fuse will not disintegrate, as fuse standard calls out 1500A? I accept different manufacturers will probably have different ratings which will exceed 1500A spec., by different amounts. Thanks for your help.
