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MULTI-PHASE CIRCUIT BREAKERS WITH SELF-EXPANSION, EQUIPPED WITH AN ENCLOSED CHEESE CHAMBER PER PHASE.
MULTI-PHASE CIRCUIT BREAKERS WITH SELF-EXPANSION, EQUIPPED WITH AN ENCLOSED CHEESE CHAMBER PER PHASE.
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机译:具有自扩展功能的多相断路器,每相配有封闭式奶酪室。
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摘要
A circuit breaker includes a plurality of poles disposed parallel side by side in a sealed enclosure (18) filled with SF6 insulating gas. The housing of each arc extinguishing chamber (22) comprises a metal shielding wall (52) designed to neutralize the influence of the magnetic stray fields of the neighbouring poles. The wall (52) can be made of conducting or ferromagnetic material, and enables correct entering of the arc favouring the expansion effect of the gas. Application: medium voltage electrical distribution substation. Refer to FIG. 1.
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