Potential transformer symbol. Voltage transformers are represented by the following symbol. It is specially designed to maintain an accurate voltage phase angle reference between the source and the instrument transformers output along with excellent voltage regulation. Ewa50 all building services symbols are drawn at relative sizes in accordance with common industry usage and accepted practice for architectural drawings. The autotransformer has only one winding.
Potential transformer circuit diagram. It is used to transfer electrical energy and to increase or decrease the tension in an ac circuit keeping the frequency. The electrical transformer is a component consisting of two or more coils coupled by magnetic induction. A potential transformer is a type of instrument transformer also known as a vt or voltage transformer.
The following transformer symbols show some standard electrical transformer symbols for industrial control systems such as magnetic core symbol inductor symbol choke symbol variometer symbol transductor induction induction voltage current transformer linear coupler symbol etc. A potential transformer pt or voltage transformer vt is an instrument transformer used for measuring voltage. Potential transformer or voltage transformer gets used in electrical power system for stepping down the system voltage to a safe value which can be fed to low ratings meters and relays. Potential transformer symbol transformers and windings vector stencils library the vector stencils library transformers and windings contains 29 element symbols of transformers windings couplers metering devices transductors magnetic cores potential transformer with 3 windings potential transformer winding.
A voltage transformer is the type of instrument transformer which is used for the transformation of the voltage from a higher value to a lower value. The primary terminal of the potential transformer is connected to the line for measuring the line voltage. Commercially available relays and meters used for protection and metering are designed for low voltage. Ahmed faizan sheikh msc.
For instance 1000120 vt means that secondary side voltage is 120 v when the primary side has 1000 v. Definition of potential transformer. A voltage transformer is generally represented in terms of primary to secondary voltage ratio like vpvs.