IMB Series HV outdoor current transformers IMB Series HV na gaba ɗaya mai hanyar kwallon karamin rarraba

Overview

Amsa da muhimmanci
● Tushen ‘filling’ mai sauƙi a kan gida da quartz ya haɗa da shirin gwamnati
● Ba a buƙata ko kisan siffofin gida ba saboda an samu expansion chamber / cooler da N2 (Nitrogen) / Metal bellows
● Duk abubuwa na gida na iron suna da MS paint don hana ainihin al'adu da tashar injiya
● Yake da kyau a kan sauya da kuma tsaye da kadan
● Shirin da zai iya canzawa masu rarrabe masu karfi, fadin maza, creepage da kuma sauyin kasa
● Duk gaskets suna cikin tashe na gida don inganta hana ainihi

Kwakwalwa na birni

Kwakwalwar hairpin da graded insulation yana inganta cewa aiki na voltage yana zama daidai. An kofin kwakwalwar da karamin kafofin mai sauƙi wanda ta da karamin damar mechanical da dielectric, kuma tana da kalmomin dielectric da kyau da kuma hana ainihi.

Zan iya zama da zabi a cikin ratio da kisan secondary tapping a cikin secondary winding.

Don ratios da multiples zuwa da 1500 A (kamar 1500-750, 1400-700, 1000-500-250, etc.) zan iya zama da zabi a cikin primary winding da zai iya reconnect. Kwakwalwar birni ana zama da karamin equal parts, wanda za su iya zama da series ko parallel baki daya a kan external links a cikin connection head.

Short Time Current (STC) rating yana da shirin series connection of primary winding (i.e. minimum cross section). Idan a zama da parallel connection, STC rating tana duba.

Kwakwalwar birni na nufin tube da shiga da fitarwa, wanda ke yawan gida. Heat losses suna faruwa a cikin expansion chamber/cooler.

Tan Delta measuring terminal (D3/F terminal)

Outer shield of primary insulation ana connect to bushing a cikin secondary terminal box da kuma earthed. Wannan shine D3/F terminal.

Tan Delta (D3/F) terminal yana da kyau a zama da earthed idan CT ya zama da charge.

Core

Current Transformers suna da kyau a zama da cores da dama zuwa biyar. Amma a zai iya bayar da cores masu yawan a yi aiki. High-grade-silicon-steel CRGO ana amfani a cikin manufacture of cores. Stringent accuracy requirements of metering cores ana samun shi a cikin special cores made from nickel-iron alloy.

High grade enameled wires ana amfani a cikin winding secondary turns on the cores. Suna da shirin distribution across the periphery of the core, wanda ke inganta leakage reactance zuwa minimum.

Tank & insulator

Yadda na haske na CT na nufin aluminium or MS painted tank da ake samu cores a cikinsu a cikin straight limb primary winding. Yadda na gaba na transformer na nufin high-grade brown glazed insulator made from porcelain or polymer. Gaskets suna da oil-proof material.

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