STEEL SECTOR HEAVY MVA SIZING Ā· K-FACTOR & OFWF COOLING

Induction Furnace Transformer Calculator

Calculate active melting power in kilowatts (kW), heavy-duty transformer MVA rating, harmonic K-factor specifications, and forced cooling systems for steel melting and foundry crucibles.

0.5T TO 15T CRUCIBLES K-13 & K-20 RATINGS OFWF HEAT EXCHANGERS 11kV / 33kV GRID
Recommended Furnace Transformer Rating
1.6 MVA Heavy Duty OFWF
Reinforced Mechanical Core Clamping
Required Active Furnace Power
1,100 kW
Recommended Harmonic K-Factor Rating
K-13 (Standard Induction)
Cooling System Recommendation
ONAF (Forced Air Fans)
Grid Interconnection Level
11 kV Direct Feed
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🧲 Induction Melting Electrical & Thermal Engineering:
Formula: Active kW = (Tons Ɨ kWh/Ton) / (Hours) Ā· MVA = (kW / 0.90) Ɨ 1.15

Furnace transformers experience severe electro-dynamic shock loads during charge drop-ins and high-frequency harmonic distortion. TransfoLine manufactures heavy-duty furnace transformers with electrostatic Faraday shields, K-13 / K-20 harmonic mitigation, and Oil Forced Water Forced (OFWF) heat exchangers for steel melting mills across Badami Bagh, Daroghawala, Sundar, Hattar, and SITE Karachi.

Steel Induction Furnace Sizing Matrix (1-Hour Heat Cycle)

Crucible Capacity Active Power (kW) Recommended Transformer MVA Harmonic K-Factor Cooling Configuration
0.5 Ton Foundry275 kW400 kVA - 500 kVAK-13ONAN Oil Natural
1.0 Ton Crucible550 kW750 kVA - 1.0 MVAK-13ONAF Forced Air
2.0 Ton Standard1,100 kW1.6 MVA - 2.0 MVAK-13OFWF Water Exchanger
3.0 Ton Re-Rolling1,650 kW2.5 MVAK-13 / K-20OFWF Water Exchanger
5.0 Ton Steel Mill2,750 kW3.5 MVA - 4.0 MVAK-20OFWF Dual Secondary
10.0 Ton Complex5,500 kW7.5 MVA - 8.0 MVAK-20OFWF 33kV Direct
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Our specialized heavy power division engineers custom OFWF furnace transformers with copper foil windings, reinforced mechanical bracing, and imported core steel for extreme duty cycles.

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