| 接头盒的种类 |
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| 引用本文： | 陈华.接头盒的种类[J].有线电视技术,2005,12(16):109-109. |
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| 作者姓名： | 陈华 |
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| 摘 要： | 此类支架型接头盒包括所有放在支架上的接头盒。支架接头盒的技术要求低于地下接头盒。它必须符合抗御3m深水浸的标准，因为这些接头盒的高度与地平线同高，而且支架也并不一定具有防水功能。Bellcore GR-771标准允许支架式接头盒透气或密封。因此，GR-771支架式接头盒额定指标显然不能满足防洪要求。由于这些接头盒是靠支架保护的，故对防撞击、防压和防腐蚀的要求不高。Bellcore不要求对支架型接头盒做防冻、解冻试验。
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| 关 键 词： | 接头盒 种类 防水功能 解冻试验 支架 地平线 防腐蚀 架型 标准 |
The variety of closures |
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| Abstract: | This pedestal group includes any closure that will be placed above grade in a pedestal type enclosure. Pedestal closures are designed to meet specificaions lower than those for underground. A 10-foot water immersion resistance specification is necessary, because these closures are placed at ground level, and the pedestal will not always be floodproof. Bellcore GR-771 allows pedestahype closures to be free breathing or sealed. Therefore, |
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