Wire Wound Current Transformer

2 5 1 wound primary type.

Wire wound current transformer. There are four typical types of current transformers. Bar type current transformer this type of current transformer uses the actual cable or bus bar of the main circuit as the primary winding which is equivalent to a single turn. The wound type provides excellent performance under a wide operating range. Wound type current transformer.

Window bushing bar and wound the primary winding can consist merely of the primary current conductor passing once through an aperture in the current transformer core window or bar type or it may consist of two or more turns wound on the core together with the secondary winding wound type. The current transformer c t. Several ct winding arrangements are used. Is a type of instrument transformer that is designed to produce an alternating current in its secondary winding which is proportional to the current being measured in its primary current transformers reduce high voltage currents to a much lower value and provide a convenient way of safely monitoring the actual electrical current flowing in an ac.

They are fully insulated from the high operating voltage of the system and are usually bolted to the current carrying device. Since the load current passes through primary windings in the ct screw terminals are provided for the load and secondary conductors. Go back to contents 2 5 ct winding arrangements. Typically the wound type is insulated to only 600 volts.

These are described in the following sections. Wound type ct toroidal window type ct bar type ct. Such current transformers are designated class px. The most common one is the wound type current transformer.

In a low voltage wound type current transformer the secondary winding is wound on a bakelite former or bobbin and the heavy primary conductor is either wound directly on top of secondary winding suitable insulation being first applied over the secondary winding or the primary is wound entirely separately taped with suitable insulating material and then assembled with the secondary winding on. Different types of current transformers. Switchyard high voltage cts toroidal current transformer. The primary and secondary cannot be disconnected.

This type of ct has conventional windings formed of copper wire wound round a core. In most cases the primary of a current transformer is a single wire or busbar and the secondary is wound on a laminated magnetic core placed around the conductor in which the current needs to be measured as illustrated in figure 1.