Xifa Current Transformer (CT) delivers accurate measurement and reliable protection for 0.4kV–35kV power systems. With high precision, stable performance, and robust insulation, Xifa CTs safeguard transformers, switchgear, and electrical panels. Widely applied in renewable energy stations, industrial plants, urban infrastructure, and compact substations, Xifa offers ISO-certified quality, CE/UL compliance, OEM/ODM customization, and cost-effective, durable solutions, making it a trusted CT manufacturer, supplier, and factory in China.
What does a current transformer CT do?
A current transformer is a sort of instrument transformer to reduce the high current level in a power circuit to a proportional one, such as 1A or 5A in power circuit, that can be safely and accurately measured and metered. The common current ratio could be 700/5 A 50/5 A or 150/1A etc . Normally, the transferred current also is taken as an electrical signal for controlling and protecting the primary power system, while providing an electrical isolation between primary system and secondary to survive secondary device from electrical faults and anomalies, such as short circuit, undervoltage and overload.
What is the current transformer CT working principle?
A current transformer CT works as the principal of electromagnetic induction, of which the principal is same as worked on distribution transformers and other coil type electrical devices.
The function of current transformer CT is to convert a high current in primary electrical system to an appropriate lower current in secondary electrical system to suitable for metering, controlling and protecting the primary electrical system, while providing electrical isolation to survive the secondary devices from electrical faults and anomalies.