Many people have general knowledge about transformers. For instance, the large transformer on a utility pole takes in high voltage and reduces it to standard 110-120 volt AC power. However, there are many types of transformers, and the 1a and 5a current transformer (CT) is an important part of many commercial and industrial applications. Here is more information on the subject.
Difference in the Windings
A CT has both primary and secondary coils. A typical step down transformer may have ten times more windings in the primary coil. However, a 1a and 5a current transformer windings are different. The ratio between primary and secondary coils can be highly in favor or the secondary.
It really does not matter how many coils are in the primary windings. It does not change the line voltage. Current in the secondary coil is proportional to measured current in the primary coil due to a constant primary potential. A CT secondary may have many more windings than its primary coil. It can reduce electrical current, and this serves important uses like:
- Peak current
- Overcurrent detection
- Undercurrent detection
- Monitor current conditions
Series Transformer
Some CT primary windings may be one simple conductor or a buss bar. In fact, the CT is sometimes called a series transformer because the primary coil is in series with the conductor supplying power to the transformer.
The secondary coil can provide current for an ammeter or resistive load until the voltage saturates the core or causes failure. The main current does not actually come from the secondary load. Instead, it comes from an outside load which usually has a one or five amp rating.
Professional Advice
There are many factors to consider when selecting a 1a or 5a current transformer. Your CT specialist can answer all your questions and show you the best options for your business.
