DIN EN 12945
Liming materials - Determination of neutralizing value - Titrimetric methods
废止
发布日期 :
2001-07-01
实施日期 :
This standard presents engineering design procedures for the electrical protection of communication facilities serving electric supply locations through the use of neutralizing transformers. Othere telecommunication alternatives, such as radio and microwave systems, are excluded from this document.
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