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Cooper Power Systems by Eaton
ELST Full-Range Current-Limiting Tandem Fuse Assembly
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Mica Spider: Provides stable winding support without generating gas pressure buildup during fuse operation.
High-purity Silica Sand Filler: Specific particle size, purity, and compaction gives the heat-absorbing and aro-quinching properties necessary for consistent clearing and low energy let-thru.
Fiberglass Housing: Provides strength and maintains integrity of fuse during any interruption, from minimum melt current to maximum rated current of 30 kA.
Pure Silver Element: Stable under current cycling and thermal stress.
The Cooper Power Systems ELST full range current-limiting tandem fuse assembly is designed for use in pad-mount switchgear filled with transformer oil or approved equivalent. It may also be used in large pad-mount transformers. The fuse’s highly efficient current-limiting section reduces the effects of high fault current stresses on upstream and downstream apparatus because it limits energy letthrough during high current fault clearing.
The expulsion section protects the current-limiting fuse from system voltage following a high current fault on the system. The ELST fuse assembly is mechanically interchangeable with the K-MATE™ SL assembly and with other manufacturers’ current-limiting tandem fuse assemblies.
NOTE: Only components of identical manufacture and ratings should be assembled together and installed in three-phase applications. The “E” rated fuse has timecurrent characteristics that are easier to coordinate with existing protective devices, such as boric acid fuses, reclosers and power fuses.
