transformer cores

8/18/2019 Transformer Cores

1/17

04/14/16 Confidential 1

ArcelorMittal Technotron s.r.o.

2008

Cores of magnetic circuits – transformer cores


2/17

2

Production range


!ound transformer cores

Toroidal cores

Cut cores

"nicores

#aminations


3/17

A$$lication $ossi%ilities

& Transmission transformers.

& 'nstrument transformer s.

& Measurement transfor mers.

& (oltage transformers.

& Current transformers.

& )u$$l* transformers.

& Po+er transformers.

& #o+ loss a$$lications.

& 'nductors.

& Con,erter.

& )u$$ression technolog*

& -egulating transfor mers.

& Pulse transformers.

& )$ecial transformers.

& -ectangular current transformers.

& Transformers u$ to a$$roimatel* 10 M(A.

& )ingle$hase and tree $hase distri%ution

transformers.

& )ingle$hase and three $hase choes.



4/17

Toroidal Cores

& enefitsenefits

& Closed flu $ath

& #o+ magnetic leaage

& #o+ noisiness of transformers

&Com$act dimensions

& #o+ +eight of transformers

& T*$eT*$e of of Toroidal CoresToroidal Cores

& !ith chamfered edges

& !ith air ga$

& )$ecial sha$es

& !ith $rotecti,e coating



5/17

Cut cores

& Benefits:Benefits:

& 3lectrical energ* sa,ings

& #o+ humming

& )a,ing in uantit* of usedco$$er for +inding

& )a,ing in +or costs eert

for transformers assem%l*

Cut surfaces of there cores can %e round5 o,al and rectangular



6/17

Cut Cores

& Cut C cores single$hase

& According the '7 4109 norm – ):5 )"5 )35

)M

& According to he '3C 29 norm – ;5 -5 M5 "

& According to the ArcelorMittal Technotron

internal norm C

& Cut C cores three$hase

& According to the '7 4109 norm – )"

& According to the '3C 29 norm – "



7/17

Cruciform Cores

& enefits

& 3lectrical energ* sa,ing.

& )a,ing in uantit* of used co$$er for +inding.

& )a,ing in +or costs eert fortransformers assem%l*.

& #o+ humming.

& etter use of coils sco$e.

& 3asier +inding of +ire on acircular coil.



8/17

"nicore

& "7'C


9/17

"ncut "nicore



10/17

uo "nicore

& A$$lication $ossi%ilities& )ingle$hase transformers.

& Three$hase transformers.

& Po+er transformers.

& Current transformers.

& Measuring transformers.

& 'nstrument transformers.

& Transmission transformers

& -egulating transformers.

& T*$es of construction



11/17

utt "nicore

's a core suita%le for choes> its front surface is su$er$osed thus

ena%ling con,entional C core re$lacement.

A$$lication

single$hase choes

three$hase



12/17

)te$ utt "nicore

& The air ga$ is designed as ste$s. )te$ %utt "nicores can %e annealed

to reduce loss and mae assem%l* easier.

& enefits

& #o+er core losses than com$ara%le C cores.

& ?igher transformer out$ut.& #o+er transformer +eight.



13/17

Com%i )te$ utt "nicore

elongs to the grou$ of )T3P

"TT "nicore. The ga$s

are on the o$$osite sides of

the core. )o the ga$ is on

e,er* other $acet in the

one leg. Thans to this +e

can achie,e reduction oflosses and noise.



14/17

:AP core

& :AP core

& A$$lication

& #o+ loss a$$lications& Transformers u$ to a$$roimatel* 10 M(A

& enefits

& The lo+est core losses

& ?igher transformer out$ut

& #o+er transformer +eight

& )a,ing in uantit* of used co$$er



15/17

Cruic* form "nicore

& All a%o,e mentioned t*$es of

"7'C


16/17

16

Manufacturing ca$acities

& Toroidal cores 40 t/month

& Ccores 60 t/month

& "nicores 20 t/month



17/17

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