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发表于 2013-6-28 16:12:14
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为什么发电机外壳与中性点一块接地?
当然也包括变压器中性点与外壳一块接地?
即电源设备的中性点为什么不与外壳绝缘呢?
这是保护需要的。
A system featuring neutral grounding has many advantages over the ungrounded system. That is:
• Greater safety for personnel and equipment
• Increased service reliability
• Lower operating and maintenance expense
• Reduced magnitude transients
• Simplified ground-fault location |
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