Pts are sometimes referred to as magnetic transformers due to the fact that their mode of operation is purely magnetic. Pdf the difference between voltage and potential difference. Difference between current transformer and voltage. Difference between capacitive voltage transformer and. The voltage between two points is equal to the electrical potential difference between those points.
The difference in voltage between the primary and the secondary windings is achieved by. Unlike a voltage transformer, the primary current of a current transformer is not dependent of the secondary load current but instead is controlled by an external. One of the major difference between them is that the current transformer convert the high value of current into low value whereas the potential or voltage. Some other differences between the current and the potential transformer are explained below in the the comparison chart. Se07specifications for the approval of measuring instrument. Transformer electromotive force etr induced in the contour ci. A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another, or multiple circuits. Difference between voltage converter and transformer. Current transformer vs potential transformer current transformers and potential. When an electric current passed through the primary winding, a magnetic field is developed which. One important difference between a current and voltage transformer is that if the secondary of a current transformer is unterminated, or terminated in too high a resistance, the transformer core can be saturated voltseconds too high, leading to a highly nonlineear response.
Advantages of this type of rtd are relatively low cost and fast response. Pdf in this paper some basic terms such as voltage and potential difference are presented. To start with, both are instrument transformers basically used for measurement and protection purpose in power systems. Those voltage sources, either ac or dc, have a specific or a. A transformer is a passive electrical device designed to convert alternating current from one. A control transformer is required to supply voltage to a load which requires.
Its value is derived by dividing the difference between the sensor resistance at c and the sensor resistance at 0c, by the sensor resistance at 0c, and then again by c as follows. Current and voltage are two fundamental quantities in electricity. Current transformer basics and the current transformer. Difference between capacitive voltage transformer and potential transformer april 29, 2018 june 7, 2016 by admin a pt, potential transformer, can be thought of as a pure transformer with primary and secondary windings. Depending on the significant output in the secondary coil current voltage, the transformer is called a voltage potential transformer or current transformer. Another distinguishing feature is the difference between indoor and outdoor. One of the major difference between them is that the current transformer convert the high value of current into low value whereas the potential or voltage transformer convert the high value of voltages into low voltage. Key difference voltage converter vs transformer in practice, voltage is supplied from many difference sources, often by the mains power. Those voltage sources, either ac or dc, have a specific or a standard value of voltage for example, 230v in ac mains and 12v dc in a car battery.
Dc current vs ac current difference between alternating current and. A current transformer is used to calculate current and power, to operate the protective relay and to monitor the power grid operation, etc. The one of the major differences between voltage and current is that the voltage is the difference between the two points and the current is the flow of electrical. Current vs voltage difference and comparison diffen.
Current is the rate at which electric charge flows past a point in a circuit. Voltage transformers and current transformers are mainly used in instrumentation hence collectively known as instrument transformers. The difference between the ratio correction factor and unity expressed in per. Difference between current and voltage transformer.