Sht Corporation Limited

Yuichi Imazato

Kazusa Mori

Kazuhiro Kasatani

The present invention provides a current transformer having excellent temperature characteristics and realizing high-precision adjustment of the output voltage via gap adjustment and small tolerance, and a method for manufacturing the same. The core component for current transformers of the present invention, comprises an E-type coreformed of an electromagnetic steel sheet and having three legsextending substantially parallel to each other and a connecting partconnected at each end of the legs, and an I-type coreformed of an electromagnetic steel sheet and having the same length as the connecting portion, the I-type core being placed on and bonded to the connecting part of the E-type core to form a single-piece core component.

Current transformer and method of manufacturing the same

The present invention provides a current transformer module that can prevent the primary coil from being lifted or dropped and prevent the bobbin from being cracked when the primary coil is inserted into the bobbin. The current transformer moduleof the present invention comprises a current transformerincluding a resin-made bobbinand a coremounted on the bobbin, wherein the bobbin has a U-shaped primary coildisposed in a primary coil through-holeand a wire-wound secondary coil, and a casingfor housing the current transformer, wherein the primary coil is a U-shaped pin having a pair of legsand a U-shaped bent portionfor connecting the legs, and the casing has a concaved contact areapositioned opposite the U-shaped bent portion of the primary coil to prevent the primary coil from falling out.

Growing community of inventors

Izumisano, Japan

Yuichi Imazato