Have you heard about potential and current transformers?
These devices play an essential role in measuring and transmitting electrical voltage and current.
The potential transformer reduces the voltage of a high voltage system to a lower value, allowing accurate and safe measurements.
The current transformer transforms high-value electrical currents into smaller currents, suitable for measuring instruments.
If you'd like to learn more about these devices and how they contribute to the efficiency and safety of the electrical system, join us on this learning journey! Shall we?
Potential transformers
The potential transformer (PT) is a device used to measure and reduce the electrical voltage of a high voltage system.
It works based on the principles of electromagnetic induction, where the voltage applied to the primary coil generates a magnetic field that induces a proportional voltage in the secondary coil.
This thus allows the voltage to be reduced to a lower value, facilitating accurate measurement by instruments.
In this way, TP plays an essential role in power distribution systems, substations and electrical voltage measurement.
See what the benefits of the potential transformer are
Potential transformers offer several benefits. After all, they enable accurate measurements, ensuring the safety of sensitive measuring equipment.
Furthermore, they reduce stress, making operators' work safer and protecting equipment.
They also provide galvanic isolation and overvoltage protection, contributing to the integrity of measurement and control devices.
Finally, its versatility allows its application in a wide range of electrical systems.
Current transformer
The current transformer (CT) is used to measure and transmit high-value electrical currents to smaller values.
It operates based on electromagnetic induction, where the primary current generates a proportional magnetic field, transferred to the secondary winding through a ferromagnetic core.
The secondary winding produces a secondary current proportional to the primary current, according to the transformation ratio determined by the number of turns in the windings.
As such, they play an essential role in electrical current measurements. Furthermore, they provide adequate currents for measuring instruments and electronic devices.
Discover the benefits of a current transformer
CTs play a key role in the accurate and safe measurement of electrical current.
They offer benefits such as:
- more accurate measurements;
- safety when dealing with smaller currents;
- galvanic isolation to protect measurement and control equipment;
- equipment protection through reduced currents;
- versatility of application in various electrical systems.
Did you enjoy learning more about voltage transformers?
At Trifásica Elétrica we offer complete solutions with potential transformers, current transformers, medium voltage circuit breakers and other materials for primary cabins.
Count on the help of our experienced technical team. Contact us now to find out more!
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