AKH0.66100 * 80II Current Transformer Primary: 2500 A Secondary: 5 A Key benefits and why you need it Accurate high-current measurement: Converts large primary currents up to 2500 A to a standard 5 A secondary signal for safe, reliable metering and protection. Protects low-voltage instruments: Isolates meters and protection relays from high-power conductors, reducing risk to sensitive equipment and personnel. Simplifies system integration: Provides a standard 5 A output that is directly compatible with most protective relays, energy meters, and monitoring systems. Improves operational reliability: Stable secondary output under high primary load helps maintain consistent measurements for control, billing, and protection functions. What it does and how it solves problems Function: Senses the primary conductor current and delivers a proportional 5 A secondary current suitable for measurement and protection circuits. Problem solved: Eliminates the need to run high currents through measuring devices; enables accurate monitoring, fault detection, and protective tripping while keeping instrumentation circuits at safe current levels. Standout point: Designed specifically to handle large primary currents (2500 A) while maintaining a standard 5 A secondary interface widely used across electrical systems. Important attributes Model: AKH0.66100 * 80II (exact model designation). Compatibility: Provides a 5 A secondary output to interface directly with standard protection relays, meters, data loggers, and control systems that expect a 5 A CT input. Performance: Sized for a 2500 A primary rating to meet high-current feeder and industrial distribution requirements; delivers proportional secondary current for accurate measurement and protection. Construction and reliability: Engineered for electrical isolation between primary and secondary circuits and for continuous operation under rated primary conditions (refer to site specifications and installation guidelines for mounting and environment). Typical applications / use scenarios Main feeder monitoring: Measuring and protecting large incoming feeders in commercial or industrial power distribution where primary currents approach 2500 A. Substation and switchgear integration: Providing a 5 A secondary signal for protection relays and SCADA metering in medium- to high-capacity switchgear and substation panels. Industrial plant metering and protection: Integrating with energy meters and protective devices for large motors, generators, or busbars that require accurate, isolated current measurement. Installation and selection notes Match the CT secondary (5 A) to the input rating of your meter or relay and verify correct wiring and polarity during installation. Confirm the AKH0.66100 * 80II rating (2500 A primary / 5 A secondary) fits the conductor and application current levels; follow applicable electrical codes and manufacturer installation instructions. For detailed mechanical mounting, ambient limits, and accuracy class information, consult the product datasheet or manufacturer technical documentation. Model and specification reminder Model: AKH0.66100 * 80II Primary current: 2500 A Secondary current: 5 A Function: Current transformer for measurement and protection applications