Aluminium Foil 8011 Alloy For Transformer Winding

Aluminium Foil 8011 Alloy For Transformer Winding

Aluminum foil 8011 alloy for transformer winding is mainly used in the production of various transformers. It used to be copper foil, but it was gradually replaced by aluminum, because aluminum is much cheaper than copper. The part used is generally the inner core winding of the transformer. The main purpose of winding the transformer aluminum foil on the winding by the winding machine is to produce dry-type transformers!
 
Where I use Aluminium Foil 8011 Alloy For Transformer Winding the most is the lead craft of the transformer. Because the lead joint is formed by cold pressing, it is inevitable to have sharp corners, which is not suitable for large-capacity, high-voltage power transformers. Yes, need to wrap aluminum foil to improve the shape of the electrodes, then add insulation
The so-called foil winding means that the coil is made of copper foil or aluminum foil.
Since the current of the low-voltage coil is usually large, if the wires are wound in parallel, if the layer winding method is used in the winding, a large helix angle will be generated. The mechanical force of the coil can cause damage to the coil. The ends of the copper or aluminum foil are flat, so the axial force at short circuit is only a small part of the winding structure. Has a strong ability to resist short circuit. Taking a 400-volt transformer as an example, low-voltage dry-type transformers above 400kVA usually use foil windings (most low-voltage dry-type transformers from domestic manufacturers use foil windings, the model is Standard Chartered Bank)
When the foil is wound, the aluminum foil should be tensioned to maintain a certain tension, and it is wound into a winding coil smoothly and flatly. It is dangerous. If the tension is too small, the wound coil will be too loose, and the size requirements cannot be guaranteed. Therefore, this is not to say that you need to increase the thickness of the aluminum foil, because the transformer designer can comprehensively consider the thickness, cross-section, current density, temperature rise, etc.
 
Aluminium Foil Pharmaceutical Grade Material 8011 packaging is currently the most widely used pharmaceutical packaging method