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ABS MODU Part 6, Chapter 1, Section 7
9.7.4 Mechanical Protection
The sides and the rear and, where necessary, the front of switchboards are to be suitably guarded. Exposed live parts having voltages to earth exceeding a voltage of 55 volts DC or 55 volts AC r.m.s. between conductors are not to be installed on the front of such switchboards. Unless the switchboard is installed on an electrically insulated floor, non-conducting mats or gratings are to be provided at the front and rear of the switchboard. Where the floor on which the switchboard is installed is of electrically insulated construction, the insulation level of the floor to the earth is to be at least 50 MΩ. A notice plate is to be posted at the entrance to the switchboard room or on the switchboard front panel to state that the floor in the room is of electrically insulated construction. Drip covers are to be provided over switchboards when subject to damage by leaks or falling objects.
里面关于绝缘垫的这句话怎么理解，我觉得是只有在配电板前面有暴露在外的超过55V AC/DC的导电部分时，才有铺设50兆欧绝缘垫的必要。
而一般的配电板前部都不会有暴露在外的导体，所以不需要铺设绝缘垫，即使有绝缘垫，也不需要达到50兆欧的要求。各位觉得对吗？
补充内容 (2015-7-16 14:53):
还有一个问题，现在询了好几家公司，绝缘垫都没有绝缘电阻这一个参数，只有耐压5kV，10kV...，ABS这个要求比较奇怪。 |
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发表于 2015-7-8 13:16
提升卡
变色卡
发表于 2015-7-9 07:49
楼主
