Steel Ducts

Introduction

Steel ducts are used for the formation of front or side cooling channels in transformer or inductor windings. They are not suitable for channels along the entire perimeter of the coil. The shape is generally C-shaped as shown in the figure above and there are C-shaped variants with rounded edges. They can be made of Ac Zn for transformer core/coil channels. In all other cases, the recommended material is AC 18/10 stainless steel.

Table fields (steel ducts)

• Code: material abbreviation. By opening the drop-down menu of the Material field, you see a list of all available materials and can choose the correct abbreviation.
• Number: the number of steel ducts used for a channel. For standardisation reasons, it is possible to place 2 or even 3 steel ducts side by side in order to achieve the desired channel width. Normally this value is 1.
• Core width: width of the core column on which the winding is made.
• Width: width of the steel duct.
• Length: length of the steel duct. If the steel duct is made from a sheet of metal with a length > the height of the windings. This measurement can be omitted.
• Thickness: the thickness of the steel sheet from which the steel ducts is cut.
• Channel: the thickness of the cooling channel that the steel duct produces.
• Article: To select the material, use the article code of your management system. This value will allow the applications to retrieve the description and unit cost into the table Material Unit Cost by importing the list of materials available in your warehouse.