Valjaonica Femod

Induction windings

In its production programme FEMOD includes a wide assortment of inductors for all metallurgical applications.

They feature various windings for quenching, induction heating, high-frequency welding, melting, local preheating, thermal treatment, etc., with power ranging from several tens of watts up to over 2 MW, operating frequencies of 50 Hz up to 450 kHz, and all voltage levels used for this application. Most commonly used material for inductors is pure electrolytic copper. Cooling fluids for inductors are water or air.

According to operating frequencies, induction windings can be:

  • LF - low frequency induction windings,
  • MF - medium frequency induction windings and
  • HF – high frequency induction windings.

Low frequency (LF) windings for steel melting induction furnaces

Low frequency (LF) windings for steel melting induction furnaces

Model ................................................ IP 8t

Power ........................................ 1800 kVA

Voltage .......................................... 1500 A

Frequency ........................................ 50 Hz

Cast metal quantity ....................... 8000 kg

Cooling ............................................ water

Size .............................. Ø1320 x 1500 mm

Low frequency (LF) induction furnace windings for melting nodular cast metal

Low frequency (LF) induction furnace windings for melting nodular cast metal

Model ........................................... ST 2000

Power .......................................... 600 kVA

Voltage ............................................ 575 V

Frequency ........................................ 50 Hz

Cast metal quantity ....................... 2000 kg

Cooling ............................................ water

Size .............................. Ø1000 x 1050 mm

Low frequency (LF) 3-phase induction furnace windings for heating copper and brass billets for extrusion

Low frequency (LF) 3-phase induction furnace windings for heating copper and brass billets for extrusion

Power ........................................ 1100 kVA

Voltage ..................................... 170-420 V

Current .......................................... 3000 A

Frequency ........................................ 50 Hz

Cooling ............................................ water

Billet sizes ....................... Ø200 or 250 mm

Medium frequency (MF) crucible induction furnace windings

Medium frequency (MF) crucible induction furnace windings

Model ................................. AJAX 1500/300

Power ........................................ 1500 kVA

Frequency ...................................... 500 Hz

Cast metal quantity ....................... 1500 kg

Cooling ... water with exit cooling installation made of chromium-steel

Size ................................ Ø840 x 1300 mm

Medium frequency (MF) induction furnace windings

Medium frequency (MF) induction furnace windings

Power ............................................ 30 kVA

Voltage ............................................ 250 V

Frequency ..................................... 4,0 kHz

Cast metal quantity ....................... 2000 kg

Cooling ............................................ water

Size .................................. Ø370 x 720 mm

Medium frequency (MF) induction windings

Medium frequency (MF) induction windings

Rated power .......................... 15 - 250 kVA

Power supply ..................... 3 x 380 V; 50Hz

Frequency .................................... 2400 Hz

Maximum operational voltage ............. 800V

Cooling ............................................ water

Size ....................... Ø100 - 220 x 1400 mm

Different types of MF induction windings

Different types of MF induction windings

Power ......................................... 2-10 kVA

Frequency .............................. 500-1000 Hz

Cooling ............................................ water

Windings of HF inductors for welding

Windings of HF inductors for welding

Power ............................................. 5 kVA

Frequency ...................................... 10 kHz

Cooling ............................................ water

Size .................................. Ø 200 x 50 mm

Inductors for high frequency (HF) seam tube welding and quenching

Inductors for high frequency (HF) seam tube welding and quenching

Power ............................ 200 VA - 100 kVA

Frequency ............................ 100 - 440 kHz

Cooling ............................................ water

Inductors for high frequency (HF) surface quenching of motor crankshafts

Inductors for high frequency (HF) surface quenching of motor crankshafts

Power ................................... 90 - 120 kVA

Operational voltage .................. 460 - 550 V

Frequency ................................... 8 - 9 kHz

Cooling ............................................ water