What is the primary purpose of a Current Transformer (C.T.)?

The primary purpose of a Current Transformer (C.T.) is to take high current and reduce it to a manageable level that can be used for measurement and monitoring purposes in electrical systems. Current transformers achieve this by using electromagnetic induction to step down the current flowing through a primary conductor to a lower, proportional secondary current. This allows for safe and accurate measurement of large currents without the need for bulky and high-rated measuring devices.

In addition, the secondary current produced by a C.T. is typically compatible with standard electrical measuring equipment, making it easier for technicians to diagnose, monitor, and analyze the performance of the electrical system. This process is essential for protective relaying and metering applications, ensuring that operators can effectively monitor and manage power distribution.

The other options do not represent the function of a Current Transformer. For instance, converting low voltage to high voltage is the role of a transformer, not specifically a current transformer. Measuring gas pressure is unrelated to the function of current transformers, as is the storage of electrical energy, which is typically the function of capacitors or batteries.