DS HD 384-4-442:1997现行
Electrical Installations Of Buildings - Part 4: Protection For Safety - Chapter 44: Protection Against Overvoltages - Section 442: Protection Of Low-Voltage Installations Against Faults Between High-Voltage Systems And Earth
出版：Danish Standards
专家解读视频
Defines requirements for the safety of persons and equipment in the low-voltage installation in the event of a fault between the high-voltage system and earth in the transformer sub-station which supplies the low-voltage installation.
HD 384.4.442:1997 - Identical
HD 384.4.442 : 200S1 - Identical
HD 384.4.442 : 200S1 - Identical
