Eaton Tandem ELF Current-Limiting Dropout Fuse Installation Instructions Manual

Also see for COOPER POWER SERIES: Installation and operation instructions Installation instructions Installation instructions Installation and operation instructions Operation instructions

Contents

Eaton Tandem ELF Current-Limiting Dropout Fuse Installation Instructions Manual Manual pdf 5 page image

1Tandem E LF c u r r e n t - l imiting d r o p o u t f u s e installation instru c t ions INSTALLATION INSTRUCTIONS MN132029EN November 2016CAUTIONEaton’s Cooper Power series Tandem ELF Fuse isdesigned to be installed in accordance with normalsafe operating procedures These instructions are notintended to supersede or replace existing safety andoperating procedures Read all the instructions beforeinstalling the Tandem ELF Fuse The Tandem ELF Fuseshould be installed and serviced only by personnelfamiliar with good safety practice and the handling ofhigh-voltage electrical equipmentProduct informationIntroductionEaton’s Cooper Power series Tandem ELF current-limitingfuse is designed for transformer protection. The Tandem ELFfuse can be applied for fusing single-phase transformersand for fusing three-phase transformers (or three-phasebanks of single-phase transformers). This fuse combines thefeatures of a series fuse link and a backup current-limitingfuse in one package. The Tandem ELF fuse (refer to Figure1) features a unique design for fast replacement of thefuse link after a low fault current operation or excessivetransformer overload current or replacement of both thefuse link and backup current-limiting fuse after a high faultcurrent operation. Note that when using recommended fuselinks or other properly coordinated fuse links, the fuse linkwill operate to provide for the dropout action of the TandemELF fuse following an interruption.Read this manual firstRead and understand the contents of this manual and followall locally approved procedures and safety practices beforeinstalling or operating this equipmentAdditional informationThese instructions cannot cover all details or variationsin the equipment, procedures, or process described norprovide directions for meeting every possible contingencyduring installation, operation, or maintenance. Whenadditional information is desired to satisfy a problem notcovered sufficiently for the user’s purpose, please contactyour Eaton representative.Figure 1 Tandem ELF fuse assemblyUpper contactUpper pull ringconnectorPull ringBackupcurrent-limitingfuseFuse linkholderLifting eyeFuse capAcceptance and initial inspectionEach Tandem ELF fuse is completely inspected and testedat the factory. It is in good condition when accepted bythe carrier for shipment. Upon receipt of the Tandem ELFfuse, inspect the connector thoroughly for damage andloss of parts incurred during shipment. If damage or loss isdiscovered, file a claim with the carrier immediately.Table 1 Recommended ELF current-limiting dropout fuse voltage ratingsCoordinates with fuse links up throughBackup current-Limiting fuseEdisontype DKearneytype XKearneytype QANEMAtype KKearneyType 200Edisontype NNEMAtype TEdisontype HKearneytype KS25 K 20 10 30 25 20 30 15 8 7