| 标准编号 | BS 5486-2:1978, IEC 60439-2:1975 |
| 标准名称 | Specification for factory-built assemblies of switchgear and controlgear for voltages up to and including 1000 V a.c. and 1200 V d.c. Particular requirements for busbar trunking systems (busways) |
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| 废止日期 | 1988-11-30 |
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