Elesa Slideshow

1. WELDING TRANSFORMERS
& MAGNETIC CORES

2. Index
COMPANY
QUALITY POLICY
PRODUCTS
Welding
Transformers
AC Welding
Transformers for
Guns
DC Welding
Transformers for
Guns
Magnetic Wound
Cores FeSi
Amorphous and
Nanocrystallines
Cores

3. Welding Transformers & Magnetic Cores
Welding Transformers
manufacturing
Magnetic Cores
manufacturing
Welding applications
and special Cu
& Al coils
• More than 2.000
transformers per year.
• 16 employers.
• 800m2
• 2,5 M€.
• Close to 1.000 Tn of
magnetic steel per year.
• 19 employers.
• 900m2
• 2,5 M€.
• Cu-Al coils for
Inductances.
• 100 K€.

4. Location

5. Magnetic Wound Cores FeSi. Characteristics
• Raw Material: NOSS & GOSS magnetic steel.
• Composition: Fe (97%) Si (3%).
• Quality: M235, M3, M4, M5 and M0H (HiB).
• Range of widths: From 10 mm to 300 mm.
• Thickness: From0,10 mm to 0,35 mm.
DUO CORE BUTT CORE STEPBUTT DDG

6. Magnetic Wound Cores FeSi. Applications
LIGHTING
MEASUREMENT EQUIPMENTS
POWER SUPPLY
VOLTMETERS, AMPERMETERS
CHOKES
VARIACS
TELECOMUNICATION EQUIPMENTS
PROTECTION EQUIPMENTS (earth protection)

7. Amorphous and Nanocrystallines Cores. Characteristics
• Energy save.
• Smaller size of Transformer.
• Lower electromagnetic noise.
• Good performance at high frequency.
• Control above hysteresis curve
applying different magnetic fields.
Base alloys:
FeSi, FeB,
FeNb, Cu
Desired alloy
Amorphous
toroid
Nanocrystalline core
manufacturing process
Nanocrystalline
toroid
Mixing
Furnace
Processing:
winding,
insulation,
welding
Mechanical
protection:
case, epoxy
resin…
Amorphous strip
Rapid Solidification
Machine
LQIeIE RAW MATERIAL
PROCESSING
Thermo-magnetic Treatment

8. Amorphous and Nanocrystallines Cores. Applications
PROTECTION SYSTEMS
CHOKES
INVERTERS
UPS
FILTERS EMI/EMC
HIGH CURRENT EQUIPMENTS
MEASURING INSTRUMENTS

9. Welding Transformers
• Resistance Welding Transformers for Spot, Butt, Protuberances and Seam Welding (50/60 Hz)
Resistance welding transformers
Manual Guns
50/60 1Khz
Robot Guns
50/60 1Khz

10. AC Welding transformers for Guns
FOR ROBOT GUNS
H (4KA) (NORM ISO 10656)
J (5,4KA) / Z&X (6,2KA) (NORM ISO 10656)
f = 50/60Hz
FOR MANUAL GUNS
• We design special transformers for manual guns according to the customer’s
specifications.

11. DC Welding Transformers for Guns
FOR ROBOT GUNS
MFHE, External Rectifier
MFJE, External Rectifier
MFJI, Internal Rectifier
FOR MANUAL GUNS
• We design special transformers for manual guns according to the customer’s specifications.
f = 1Khz

12. DC Welding Transformers for machines
• Powerfull, more mechanical robustness, compact size.
• It allows modular connection for increassing the range of powers.
• Applications: Welding DC machines for spot, Protuberances, Butt and
Seam welding.
TP MF/ HE TP MF/ JE
f= 1 Khz
• Typical KA values in standard DC welding machines applications

13. Quality Policy
• The quality policy in ELESA TRANSFORMADORES is to supply goods and give service of the
highest quality fulfilling all the norms required in its manufacturing, rules and needs of the
customers.
• Quality of ELESA has been
guaranteed for more than 25 years
for main manufacturers of gun and
welding machines as well as for
measurement equipments
manufacturers who are the
suppliers to the Energy companies.

14. Quality Policy
• Magnetic cores are homologated by our customers before having checked their magnetic
specifications in ELESA thanks to our testing equipment of high performance.
• The welding Transformers, besides being homologated by our customers once they have
been tested in their machines or guns, on request can be tested in SLV institute in
DUISBURG.
• We are homologated according to ISO 9001 Norm.

15. For more details, visit our website:
www.elesa-trafocore.com