Current Transformers and Its Factors

A current transformer, a type of electrical instrument, is designed to supply current in the secondary circuit at a rate that is perpendicular with the flow of current through its primary circuit. They are widely used to calculate current and monitor operation of the power grid. The current ratio between primary and secondary is what you use to identify a current transformer. In managing electricity infrastructure, all needs must be wise and with quality products. Then MGM Transformers can help to supply varying secondary voltages to externally connected loads. You can find quality electrical and lighting products at the MGM Transformer Company.

Most commonly, current transformers are used in metering or protective relaying in electrical power industries. They allow for the safest operation of large currents and high voltages. The current transformer can be used to measure circuitry and manage it from the highest voltage available. A current transformer’s control is usually done by passing a single primary turning under a well-insulated, toroidal core that has large turns of wire wrapped. A current transformer is used to measure the flow and monitor the power consumption. The CT is defined fundamentally by the value of the current ratio flowing from primary into secondary.

Certain factors improve the accuracy of the current Transformer. They include rating factor, burden, and physical CT configuration.

The current transformer circuit’s burden is defined by the impedance value. The main items that cause burden in a current calculation circuit are the intermediate conductors, switch blocks meters, and the sources. This is because a substation-meter can be placed at a level that is not possible with current transformers that have 1 amp and produce low voltage drop.

The Rating Factor is a factor that affects current transformers and can be used to calculate the correct maximum measurable current. This is done by multiplying the total load of the CT. To maintain accuracy in rising ambient temperatures, CTs with low capacities would have rating factors ranging from 35 to 55 degrees Celsius.

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