PFIFFNER has been producing instrument transformers for morethan 80 years. The devices performtheir tasks in electric plant – dayand night, summer and winter. Our instrument transformers meetthe requirements of the interna-tional customers and are designedfor a service life of 40 years.

PFIFFNER produces ring core currenttransformers for every measurementand protection application. Variouslines of products meet customer- specific requirements for both indoorapplications as well as those for out-door operation.

Thanks to selected core materials andproven designs, precise meteringclasses are available for all transformermodels even for low primary currents.The ring core current transformers canbe officially calibrated in our certified labora tories to meet customer requirements.

Ring core current transformers

Current transformerJKn slip-over for indoor applicationn suitable for mounting on insulated

high-voltage cablesn high voltage insulation is provided

by the cablen primary current up to 4’000 An large variety of geometrical

configurationsn winding potted in polyurethanen user-defined positioning

Current transformerJKS-Sn split-core for indoor applicationn suitable for mounting on insulated

high-voltage cablesn high voltage insulation is provided

by the cablen primary current up to 2’000 An versions for various cable diametersn casing made of polycarbonate,

winding potted in polyurethanen user-defined positioning

Current transformerJK-G/JKS-Gn slip-over or split-core for outdoor

applicationn suitable for mounting on insulated

high-voltage cablesn high voltage insulation is provided

by the cablen primary current up to 2’000 An versions for various cable diametersn aluminium case for protection

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Suitable for billing measurements

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Can be installed in existing plant in a simple way during operation

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Also available for protection classes withtransient specifications (TPX, TPY, TPZ)

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Current transformerJKFn slip-over for outdoor applicationn suitable for mounting on cables or

bushingsn high voltage insulation is provided

by the cable or bushingn primary current up to 4’000 An large variety of geometrical

configurationsn winding potted in cycloaliphatic

epoxy resinn user-defined positioning

Current transformerAKAn high-current applicationn suitable for air-insulated generator

feedersn high voltage insulation is provided

by the air-gap between primary conductor and current transformer

n primary current up to 50’000 An diameter appropriate to insulation

voltagen winding potted in epoxy resinn user-defined positioning

Current transformerALGn high-current applicationn suitable for mounting on high-

current bushingsn high voltage insulation is provided

by the bushingn primary current up to 50’000 An user-defined positioning

Available as bushing current transformer(Outdoor – outdoor, indoor – indoor, outdoor – indoor)

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Current transformer cascades for multipleuse of the high-current transformer coresaves space and costs.

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Magnetic influences caused by return conductors and neighbouring phases are taken into account

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PFIFFNERInstrument Transformers LtdCH-5042 Hirschthal

Phone +41 (0)62 739 28 28Telefax +41 (0)62 739 28 10E-Mail sales@pmw.chInternet www.pmw.ch

PFIFFNER Instrument Transformers Ltd is the only instrument transfor -mer manufacturer in Switzerland. This internationally successful, family-owned company employs around 200 employees in its main facility.

PFIFFNER offers highest quality, maintenance-free, long-life productsand innovative solutions. With production facilities on three continents, we cater for the requirements of the particular locations and, in this way,emphasise our customer proximity. Our business philosophy includes a clear commitment to Europe as a production location.

This is why our employees identify themselves with our products andour customers. On the part of our customers, we enjoy their high esteem, loyalty and satisfaction. In this way, we stress the importance of our motto “true values”.

No CH 2175840

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