Protection Current Transformers are designed to measure the actual currents in power systems and to produce proportional currents in their secondary windings which are isolated from the main power circuit. These replica currents are used as inputs to protective relays which will automatically isolate part of a power circuit In the event of an abnormal or fault condition therein, yet permit other parts of the plant to continue in operation.
If you require more information on Protection class, please refer to our guide -> PDF
Protection CTs from ITL
How to choose a protection current transformer?
It can be difficult to pick the right CT for your application (especially if you do not have technical background).
Here are some things we will need to know before we can provide a quotation for you:
- Accuracy Class
- Application - indoor/outdoor
- Limiting Dimensions - CT has to fit on a busbar or in switchgear