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Current Transformers

Current transformers are used in electric engineering. They can be used to measure electrical currents. They are also known by the name “instrument transformers”. They will produce a current proportional the circuit’s current. This current can be used to connect to recording or measuring instruments. 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.

These transformers can be used to isolate measuring instruments from high voltages in the primary. They are also used for protection relays and metering in the electric power industry. As with other transformers they also have a primary, secondary, and magnetic core.

Current transformers have two primary functions: they ensure that primary circuits and secondary circuits are connected, so that secondary currents have an exact relationship to primary circuits.

Others electrical transformers include:

o Power transformers

o Control transformers

o Dry type transformers

o High voltage transformers

o Three phase transformers

o Step down Transformers

Current transformers have many uses. Some current transformers are used in street lighting. Others are used to measure current in motors and electronic equipment. The current transformers have small footprints, which are attached to printed circuit boards and used for sensing current overloads.

For measuring voltage or current in three-phase systems, larger devices are used. Commercial transformers can be used to measure low power courants. Some transformers are weatherproof, and can be used outdoors.

There are two types basic types of current transformers.


o Toroidal

Wound transformers have an integral primary winding, which is connected to the conductor that carries measured current.

Toroidal current transformers lack a primary winding. Instead the wire that carries current is threaded though a window within the Toroidal Transformer.

A current transformer, a type instrument transformer, is one that provides a current in its secondary that is proportional to its primary.