AKH0.66/I Series Current Transformer AKH0.66/I is a current transformer designed for power system protection and energy measurement. It provides current transformation for protection relays and energy meters with a secondary rating of 15/5 A and a primary rating listed as 30I. This unit is intended to support accurate monitoring and protection in electrical distribution and power networks. Key benefits Enables safe, indirect measurement of currents by providing electrical isolation between the primary circuit and measurement equipment. Supports accurate current sensing for both protection schemes and energy metering. Designed for use with protection relays and energy meters that accept CT input, helping to improve overall system reliability. Compact and robust construction suited to installation in switchgear, panels, and distribution boards. Simple integration with existing metering and protection architectures without additional complex wiring. Key attributes Model and series: AKH0.66/I Series Current Transformer Application: Current transformer for power system protection and energy measurement Primary rating: 30I (as specified) Secondary rating: 15/5 A Compatibility: Suitable for connection to protection relays and energy meters that accept CT inputs Construction notes: Material and exact mechanical specifications are not provided here; refer to official datasheets for detailed dimensions and insulation details Performance indication: Supports energy measurement and protection functions through standard CT input Applications and use cases Energy metering point in a distribution panel: Provide accurate current signals to a kWh or power meter, enabling precise energy consumption measurement and billing. Protection relay integration in switchgear: Feed relay current inputs for protection schemes (overcurrent, differential protection, etc.) within transformers, feeders, or large motors. Utility or industrial substation monitoring: Supply CT input to monitoring systems for continuous load analysis, fault detection, and performance reporting. Installation considerations Ensure correct polarity and orientation between primary circuit and secondary CT connections to maintain accurate measurement and protection operation. Confirm compatibility with the burden (load) on the secondary side as required by connected relays or meters. Follow all applicable safety guidelines and manufacturer instructions during installation and commissioning. This description reflects the AKH0.66/I Series Current Transformer and its stated ratings (30I primary, 15/5 A secondary) as used for energy measurement and protection applications. It aims to present clear, customerfocused information to support informed decisions.