HD 384.4.45-1989 标准详情
- 标准号:HD 384.4.45-1989
- 中文标题:
- 英文标题:Electrical Installations Of Buildings - Part 4: Protection For Safety - Chapter 45: Protection Against Undervoltage
- 标准类别:HD标准HD
- 发布日期:
Defines the precautions to be taken where a drop in voltage, or a loss and subsequent restoration of voltage could imply dangerous situations for persons or property or where a part of the installation or current-using equipment may be damaged by a d
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