The current transformer (CT), also known as an instrumental transformer, is used to either reduce or propel the primary current across the secondary winding. The current produced across the secondary terminal is directly proportional to the primary winding. In high power circuits, the voltage across the primary side is scaled down to a minimum value, which helps to measure the actual AC

ADVANTAGES OF СURRENT TRANSFORMERS 1. Very large currents can be measured through Instrument Transformer. 2. The readings do not depend upon resistance or inductance or capacitance of the transformer. Note that the primary and secondary windings o...

2021-3-4Instruments Transformers Uses Advantages: Transformers are used in ac systems for measuring current, voltage, power and energy.They are also used in connection with the measurement of power factor, frequency and for indication of synchronism.Instrument transformers find a wide application in protection circuits of power systems for the operation of over current…

2020-8-6The current transformer basically consists of an iron core upon which primary and secondary windings are wound. The primary winding of the transformer is connected in series with the load and carries the actual current flowing to the load, while the

Advantages of instrument transformer are: 1. Instrument transformers are moderate in size and used for 5A current and 100 to 200 V measurement. 2. Instruments using instrument transformer are low cost. 3. Replacement of damage parts is Easy. 4.

2020-10-26Current Transformer (C.T.) Potential Transformer (P.T.) Current Transformer (C.T.) Current transformer is used to step down the current of power system to a lower level to make it feasible to be measured by small rating Ammeter (i.e. 5A ammeter). A typical connection diagram of a current transformer is shown in figure below.

Introduction

2011-4-16Current transformers Principle of operation of CT A current transformer is defined as as an instrument transformer in which the secondary current is substantially proportional to the primary current (under normal conditions of operation) and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.

Transformers are two types. Auto transformer and isolated transformer. The first type has only one winding with taping. So it is connected to mains and it can give shock. The second one is primary is isolated from the secondary. So secondary will