后备熔断器 8.3-38kV Current-Limiting Backup Fuse

Eaton（Cooper）后备保护熔断器 8.3-38kV ELSP Current-Limiting Backup Fuse (CBUC Series）

Eaton offers its Cooper Power™ series ELSP current-limiting backup fuse that is used in series with low current primary protection devices such as a Bay-O-Net fuse or its Cooper Power series MagneX™ interrupter.

The ELSP fuse is designed for use in transformer oil, Envirotemp™ FR3™ fluid, or an approved equivalent.

The fuse’s highly efficient current-limiting section minimizes the effects of high fault current stresses on equipment and the distribution system. Its minimum interrupting rating is coordinated with that of a low current interrupter to avoid undesirable low current operation; yet its maximum interrupting rating will clear the highest fault currents likely to occur. Higher continuous current ratings can be achieved by connecting two fuses in parallel.

The ELSP fuse is used in transformers to protect and isolate faulted equipment. When connected in series with a low current primary protection device, the fuse becomes an element of a twopart protection system that gives a full range of fault protection.

This two-part system provides low current protection with the replaceable expulsion fuse or resettable MagneX interrupter, and it adds the energy-limiting protection of a current-limiting fuse. Together, they coordinate easily with upstream and downstream devices.

No special tools are required. The fuse is liquid immersed, mounted as near as possible to the incoming primary bushing to which it is connected. Normal liquid dielectric clearances should be used. Refer to Service Information MN132001EN ELSP Current-Limiting Backup Fuse Installation Instructions for details.

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