Current Transformer Vs Current Transducer- Which one to Choose?
If you have been working with electrical circuits, you must be familiar with the need to measure electrical current. To do this, you will need a device that can convert the current into a signal that can be read by your measuring instruments. This is where current transformers and current transducers come into play.
Both of these devices are commonly used in the electrical industry, and they serve the same purpose – to measure current. However, there are some key differences between them. In this article, we will discuss these differences in detail so that you can choose the right device for your needs.
Current Transformer
A current transformer (CT) is a passive device that is used to measure high currents. It consists of a primary coil, usually with only one turn, and a secondary coil with many turns of wire. The primary coil is connected to the circuit in which the current needs to be measured, while the secondary coil is connected to the measuring instrument.
CTs are used to step down high currents to a safe, measurable level. They are commonly used in power plants, substations, and industrial applications.
U Core for Current Transformer 0.2 Accuracy
CTs are highly accurate, with accuracy levels of up to 0.2%. However, they have some limitations. For example, they cannot be used to measure DC currents. Additionally, they are not suitable for measuring low currents (below a few amperes).
Split Core Current Transformer
Split core current transformers are a type of current transformer that can be installed without interrupting the circuit. They consist of two hinged halves that can be snapped shut around the conductor. This makes them ideal for retrofitting existing installations.
Open Loop Current Transducer
An open-loop current transducer is an active device that is used to measure AC and DC currents. It consists of a primary conductor and a measuring circuit. The primary conductor is connected to the circuit in which the current needs to be measured, while the measuring circuit is connected to the measuring instrument.
Closed Loop Current Transducer
A closed-loop current transducer is similar to an open-loop current transducer, except that it has a feedback loop that modifies the output signal based on the input signal. This makes it highly accurate and suitable for measuring low currents.
Conclusion
In conclusion, both current transformers and current transducers are essential devices in the electrical industry. While CTs are highly accurate and suitable for measuring high currents, current transducers are more versatile and can measure both AC and DC currents. Additionally, current transducers are suitable for measuring low currents.
When choosing between these two devices, it is important to consider your specific requirements. If you need to measure high currents, a CT would be the right choice. On the other hand, if you are looking for a more versatile device that can measure both AC and DC currents, a current transducer would be the way to go.
In either case, it is important to choose a high-quality device that is designed to meet your specific requirements. When you choose the right device, you can ensure accurate measurements and improve the safety and efficiency of your electrical installations.