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ArcelorMittal Technotron s.r.o.
Cores of magnetic circuits – transformer cores
2008
5/22/2017
Confidential
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ArcelorMittal Technotron s.r.o.
Production range:
Wound transformer cores:
Toroidal cores
Cut cores
Unicores
Laminations
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ArcelorMittal Technotron s.r.o.
Application possibilities
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Transmission transformers.
Instrument transformers.
Measurement transformers.
Voltage transformers.
Current transformers.
Supply transformers.
Power transformers.
Low loss applications.
Inductors.
Converter.
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Suppression technology
Regulating transformers.
Pulse transformers.
Special transformers.
Rectangular current transformers.
Transformers up to approximately 10 MVA.
Single-phase and tree phase distribution
transformers.
• Single-phase and three phase chokes.
ArcelorMittal Technotron s.r.o.
Toroidal Cores
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Benefits:
Closed flux path
Low magnetic leakage
Low noisiness of transformers
Compact dimensions
Low weight of transformers
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Type of Toroidal Cores:
With chamfered edges
With air gap
Special shapes
With protective coating
ArcelorMittal Technotron s.r.o.
Cut cores
• Benefits:
• Electrical energy
savings
• Low humming
• Saving in quantity of
used copper for
winding
• Saving in work costs
exert for transformers
assembly
Cut surfaces of there cores can be round, oval and rectangular
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ArcelorMittal Technotron s.r.o.
Cut Cores
• Cut C cores single-phase
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According the DIN 41309 norm – SG, SU, SE,
SM
• According to he IEC 329 norm – Q, R, M, U
• According to the ArcelorMittal Technotron
internal norm - C
• Cut C cores three-phase
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According to the DIN 41309 norm – S3U
• According to the IEC 329 norm – 3U
ArcelorMittal Technotron s.r.o.
Cruciform Cores
• Benefits:
• Electrical energy saving.
• Saving in quantity of used copper
for winding.
• Saving in work costs exert for
transformers assembly.
• Low humming.
• Better use of coils scope.
• Easier winding of wire on a
circular coil.
ArcelorMittal Technotron s.r.o.
Unicore
• UNICORE advanced technology
leads to low specific losses
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Benefits of Unicore:
Low specific losses
Easy assembly
Favorable price
Saving in quantity of used copper
The banding of cores is not
necessary
• Short delivery time
• Uncut Unicore
• Due to advantages of their
construction Uncut Unicore are apt
to replace almost all conventional
uncut C cores and rectangular
toroidal cores. Corner angle can be
45 of 90 degrees.
• Application possibilities:
• Rectangular current transformers.
• Voltage transformers.
ArcelorMittal Technotron s.r.o.
Uncut Unicore
ArcelorMittal Technotron s.r.o.
Duo Unicore
• Application possibilities:
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Single-phase transformers.
Three-phase transformers.
Power transformers.
Current transformers.
Measuring transformers.
Instrument transformers.
Transmission transformers
Regulating transformers.
• Types of construction
ArcelorMittal Technotron s.r.o.
Butt Unicore
Is a core suitable for chokes; its front surface is superposed thus
enabling conventional C core replacement.
Application:
single-phase chokes
three-phase
ArcelorMittal Technotron s.r.o.
Step Butt Unicore
• The air gap is designed as steps. Step butt Unicores can be annealed
to reduce loss and make assembly easier.
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Benefits:
Lower core losses than comparable C cores.
Higher transformer output.
Lower transformer weight.
ArcelorMittal Technotron s.r.o.
Combi Step Butt Unicore
Belongs to the group of STEP
BUTT Unicore. The gaps
are on the opposite sides of
the core. So the gap is on
every other packet in the
one leg. Thanks to this we
can achieve reduction of
losses and noise.
ArcelorMittal Technotron s.r.o.
DGAP core
• DGAP core
• Application:
• Low loss applications
• Transformers up to approximately 10
MVA
• Benefits:
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The lowest core losses
Higher transformer output
Lower transformer weight
Saving in quantity of used copper
ArcelorMittal Technotron s.r.o.
Cruicy form Unicore
• All above mentioned types of
UNICORE we are capable to
manufacture in cruicy form.
• This means you can get all
advantages of UNICORE even if
your transformers are made of
cruicy form C-cores.
ArcelorMittal Technotron s.r.o.
Manufacturing capacities:
• Toroidal cores 40 t/month
• C-cores
60 t/month
• Unicores
20 t/month
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ArcelorMittal Technotron s.r.o.
ArcelorMittal Technotron s.r.o.
Křižíkova 1377
Frýdek-Místek
738 01
Czech republic
www.technotron.cz
[email protected]
Tel/Fax: +420 558 621 547
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