THREE-PHASE BATCH TYPE METERING CURRENT TRANSFORMER FOR COMPRESSED-GAS-INSULATED SWITCHGEAR

摘要

PURPOSE:To detect the main circuit current with precision flowing through hole voltage central conductors of each phase by constituting to arrange the magnetic shield made of highly conductive materials so that metering current transformers for all three-phase may be surrounded in batch. CONSTITUTION:A magnetic shield 10 is composed of highly conductive materials, constituted so that metering current transformers 5a, 5b and 5c may be surrounded in batch and fixed to a mounting plate. Inner shields 11a, 11b and 11c are fixed to the mounting plate with bolts, etc., with which metering current transformers 5a, 5b and 5c are fixed. The influence of external magnetism can thereby be removed.