The deployment of current transformers in power systems primarily considers conductor type and monitoring targets:
Inside distribution cabinets: Typically fixed at the outgoing terminals of circuit breakers, working with energy meters to achieve branch metering.
Bus trunking: Employs an open structure that snaps onto the busbars; careful attention must be paid to three-phase balanced installation.
Cable joints: A through-hole design allows direct cable connection; suitable for retrofit projects.
Key difference: Bus trunking installation requires consideration of electromagnetic interference, while cable joint installation prioritizes sealing and protection.