POLYPHASE CURRENT TRANSFORMER

摘要

PROBLEM TO BE SOLVED: To provide a polyphase current transformer in which diameters of through holes formed at intervals each of which is equal to the inter-terminal pitch of a circuit breaker for wiring are restricted and which improved the workability of wiring work even when primary conductors are composed of bus bars or cable wires fitted with solderless terminals and having large current carrying capacities.

SOLUTION: A polyphase current transformer 1 is integrally constituted by arranging a plurality of feed-through type current transformer elements 5 having through holes 2 through which primary conductors are passed in parallel with each other and is provided with conductor bars 8 which can be passed through the through holes 2 and have conductor terminals 8a at both ends and annex terminal blocks 8 attached to ends of the through holes 2 for supporting the conductor bars 8. Annex terminal blocks 6 including the conductor bars 8 are made to be attachable to and detachable from the transformer 1.

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