Precision Current Transformer How Does it Work? Primary Winding: The primary winding of a CT is connected in series with the circuit whose current is to be measured. Magnetic Core: The current flowing through the primary winding creates a magnetic field around it. Secondary Winding: A secondary winding is wound around the same core. The magnetic field induces a voltage in the secondary winding, which, in turn, produces a secondary current. Current Ratio: The ratio of the primary current to the secondary current is known as the CT's current ratio. This ratio is typically designed to be much greater than 1, allowing for significant current reduction. Current Transformer Manufacturer in Vadodara Current Transformer Manufacturer in Gujarat Current Transformer Manufacturer in India