What is current transformer and voltage transformer?
The current transformer and potential transformer (also called voltage transformer) are both measuring devices. A CT lowers the current signals for measurement purposes, while a PT lowers high voltage values into lower ones. The transformers are designed to measure whether power systems are both accurate and safe.
How is current transformer used?
A Current Transformer (CT) is used to measure the current of another circuit. CTs are used worldwide to monitor high-voltage lines across national power grids. A CT is designed to produce an alternating current in its secondary winding that is proportional to the current that it is measuring in its primary.
What is the other name of current transformer?
Due to this type of arrangement, the current transformer is often referred too as a “series transformer” as the primary winding, which never has more than a very few turns, is in series with the current carrying conductor supplying a load.
What are the functions of a CT?
A computed tomography (CT or CAT) scan allows doctors to see inside your body. It uses a combination of X-rays and a computer to create pictures of your organs, bones, and other tissues. It shows more detail than a regular X-ray. You can get a CT scan on any part of your body.13 Dec 2020
What is the advantage of current transformer?
Current transformers offer electrical isolation among measuring instruments & high voltage power circuits. So that electrical insulation requirements can be reduced in protective circuits & measuring instruments.
What is the working principle of CT?
The basic working of CT is similar to that of PT, but the primary winding of the current transformer is connected in series with high power lines. Since the current in high magnitude lines is very large if we use a small diameter of primary wire then it will be damaged.3 Sept 2018
What is the principle of current?
Current is directly proportional to voltage, inversely proportional to resistance. One of the most common electrical measurements you'll use is the watt, a unit of electrical power: W (Watts) = E (Volts) x I (Amperes).
Where are current transformers located?
Current transformers can often be located in the generator phase connections at the neutral end and will then protect the generator from the system faults and to a large degree give protection for faults in the generator.14 Mar 2014