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Subject: о чем идет речь? Можно просто объяснить на пальцах и не переводить:The simple “grounding connection” of each ground or metal casing, i.e. the connection of the casing of a machine to be protected to any grounded earth plate, DOES NOT meet proper protection requirements. This system is effective when electrostatic charges are to be conveyed to the ground, if for any reason an accumulation has occurred on a metal surface. In case of grounding failure affecting an electric circuit, a current is created that flows to the ground that works as a conductor. If the resistance of the ground connection is not low enough, the casing is energized and the ground connection is no longer an effective protection system. Заранее спасибо! |
| речь идет о заземления електрических приборов |
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