Unicreed Blog

The triple-insulated wire is a new high-performance insulated wire that has been developed in the last few years in the world. Wires of this type consist of three layers of insulation, with a core wire in the middle. The first layer of the film is a golden polyamide film, also known as golden film abroad. The thickness of this film is several microns, but it can withstand high voltage pulses of 3kV;

YES, In the same specification, the outer diameter of a triple insulated wire is larger than that of an enameled wire. There is no problem with using triple insulated wire instead of enameled wire as long as the bobbin has enough reserve space. Wires that are triple insulated are frequently used in high-frequency transformers that are subject to safety regulations, as they can produce high current densities and a small creepage distance.

It is not recommended use enameled wire plus sleeve replace triple insulation wire. It is expected that the enameled wire plus sleeve will cost less than the triple insulation wire in terms of material costs, however, the volume of the product, after including the retaining walls and sleeve, will increase considerably.

The reason for this is that the sheet laminated core can reduce another type of iron loss – eddy current loss.

Transformers classified as Class II or Class III are used for circuits classified as Class II or Class III, respectively, according to the National Electrical Code, ANSI/NFPA 70. The main purpose of these connectors is to connect sinusoidal power supplies.

Laminating steel sheets are commonly used for transformer cores. Laminating containing silicon has a silicon content of 0.8%~4.8%. Due to the fact that laminate steel is a magnetic material with strong magnetic permeability, silicon steel is used as the iron core of the transformer.

Generally, bobbin transformers are two-winding transformers in which the primary and secondary coils are wound side by side on separate bobbin separated by an insulating barrier to create a two-winding transformer.

Among the transformer losses there are iron losses, copper losses, hysteresis losses, eddy current losses, stray losses, dielectric losses, and other types of losses. In transformers, hysteresis losses are caused by changes in the magnetic field of the transformer core, whereas copper losses are caused by the resistance of the transformer windings.