The current transformer ct. Connections are correct as per wiring diagram otherwise problems will result with the register displays for health safety reasons it should be noted that if a current transformer is operated with the secondary s1 and s2 open circuited dangerous voltages may be generated at the secondary terminals or leads.
Introduction To Current Transformers Part 5a Delta Connected
Current transformer connection diagram. The star star connection of three identical single phase transformer on each of the primary and secondary of the transformer is shown in the figure belowthe phasor diagram is similar as in delta delta connection. Current transformer ct definition. One disadvantage of delta connected three phase transformers is that each transformer must be wound for the full line voltage in our example above 100v and for. A wiring diagram is a simplified standard photographic representation of an electrical circuit. 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 primarycurrent 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. Three current transformer installation with ammeters for three phase supply the connection of ct is to easy and the best place of installation of ct in electric power panel board is to connect it with incoming supply wires and connection.
The dashed lines indicate the transformer outlines. There are four typical types of current transformers. In a delta connected dd group of transformers the line voltage v l is equal to the supply voltage v l v sbut the current in each phase winding is given as. It reveals the elements of the circuit as streamlined shapes and the power as well as signal connections between the tools. It transforms the high voltage current into the low voltage current due to which the heavy current flows through the transmission lines is safely monitored by the ammeter. Window bushing bar and woundthe 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.
A current transformer is a device that is used for the transformation of current from a higher value into a proportionate current to a lower value. 1 3 i l of the line current where i l is the line current. Mostly we use copper strips for main sharing connection in power board because we can easy get power. The connection diagram on the left shows how a deltadelta connection can be made either with three single phase transformers or with one three phase transformer. The phase current is equal to the line current and they are in phase. Star star υ υ connection of transformer.
Collection of 3 phase current transformer wiring diagram.
Gallery of Current Transformer Connection Diagram
