IEC 60947-3 Ed. 4.0:2020 (b)
低電圧開閉装置及び制御装置-第3部:スイッチ,断路器,スイッチ断路器及びヒューズ組合せ装置
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
発行年月日:
2020-04-22
状態:
有効
邦訳版:
無
英語 190ページ
74,112 円(税込) 本体価格:67,375円
- 規格概要
-
IEC 60947-3:2020 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC.全文を表示する
This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:- addition of critical load current tests for DC switches (see 9.3.9);
- addition of requirements for a conditional short-circuit rating for disconnectors, switches, and switch-disconnectors protected by circuit-breakers (see 9.3.7.2);
- addition of new categories for high-efficiency motors switching (see Annex A);
- addition of new Annex E for connection to aluminium conductors;
- addition of new Annex F for power losses measurement.
TC |
TC 121/SC 121A |
---|---|
ICS |
29.130.20 |
備考 |