Aluminum Strip For Transformer Winding

Feb 17, 2023

Aluminum strip for transformer is used in transformers for electrical engineering and in power distribution, which means in power plants and substations, in local distribution networks, in wind power, industrial plant and the power adaptors belonging to electronic devices.

Technical Specifications

♦Alloy: 1050/1060/1080/1100/1350
♦Temper: O H12,H14,H16,H18
♦Thickness: 0.2mm–2.0mm
♦Width: 50–1200mm
♦Packing: Eye to wall and eye to sky, wooden pallet and wooden case
♦U. T. S: 60-95N/mm2
♦Elongation: >25%
♦Max. Resistance in 20 degree: ≤ 0.02825Ω Mm2/m
♦Density in 20 degree: 2.703kg/dm3
♦Burr’s height: 0.01–0.03mm vary with thickness of the strip
♦Collapsed side’s height: 0.05–0.1mm
♦Surface: Free of oil,free of scratches

The chemical composition of aluminum strip/foil for transformer winding.

Table 1
	Unit : weight %
Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Others	Al
Individual	Total
max. 0.2	max. 0.25	max. 0.04	max. 0.03	max. 0.03	-	max. 0.04	max. 0.03	max. 0.03	-	min. 99.65

Mechanical properties and electric conductivity of Aluminum Strip/Foil For Transformer.

Table 2
Thickness	Tensile strength N/mm2(MPa)	Elongation %	Bending 180 buckling inside radius	Electric conductivity % at 20°C

Over 0.3 to 0.5	Less than 75	25min.	Close contact	62.5min
Over 0.5 to 0.8	Less than 75	30min.	Close contact	62.5min.
Over 0.8 to 1.3	Less than 75	35min.	Close contact	62.5min.
Over 1.3 to 2.0	Less than 75	35min.	Close contact	62.5min.
Over 2.0 to 2.4	Less than 75	35min.	Close contact	62.5min.

Typical Application:

Aluminum Strip for transformer winding can be used for variable transformer like low or high voltage transformer winding, high frequency transformer,step up or down voltage transformer, distribution transformers, reactor and etc.