Title :
A three element fuse that can be triggered ´open´ in the event of fire
Author :
Wolpow, Milto ; Ludlow, Robert
Author_Institution :
Hepco Power, Glendale, NY, USA
Abstract :
A simple, safe, inexpensive and exact method is described for disconnecting the bus conduits from the battery strings in the event of fire or catastrophe by means of a fuse that can be triggered open. The trigger open, self-destruct link is essentially a melt system derived from a self contained oxidizable chemical package. This is achieved by means of an ultrafine aluminothermic slow alloy emulsion that is soft-sintered on to each side of the zinc alloy fuse link. An ultrafine magnesium alloy ignitor is embedded into the emulsion surface. The ignitor can be commanded to turn on by the electronic package, causing the emulsion to burn ´easy´ and melt the link. This entire discrete link is ceramic encapsulated; therefore, it does not pose any fire threat. It is also further embedded into extinguishing sand.<>
Keywords :
electric fuses; fires; power supplies to apparatus; power system protection; safety systems; secondary cells; battery strings; bus conduits; ceramic encapsulated; fire; fuse; ignitor; protection; safety systems; soft-sintered; ultrafine aluminothermic slow alloy emulsion; Batteries; Chemicals; Circuit breakers; Electronic packaging thermal management; Fires; Fuses; Protection; Switches; Voltage; Zinc;
Conference_Titel :
Telecommunications Energy Conference, 1990. INTELEC '90., 12th International
Conference_Location :
Orlando, FL, USA
DOI :
10.1109/INTLEC.1990.171264