永久性安裝設備的漏電流問題
映像中，UL 60950-1中，固定安装的（permanentlyinstallation），是不需限制测漏电流，只需要加一個警告語句即可。誰能幫找找條文出處。（最好能貼出來）
我的UL 60950-1打不開，很郁悶。。。 BARRY:
见下文, 还是有限制的,只是限制的方法不同,条例是我在IEC60950中找的,回头我也找UL60950看看是不是一样的.
5.1.7 Equipment with touch current exceeding 3,5 mA
For STATIONARY PERMANENTLY CONNECTED EQUIPMENT or STATIONARY PLUGGABLE EQUIPMENT
TYPE B having a main protective earthing terminal, if the TOUCH CURRENT measurements
exceed 3,5 mA r.m.s., all of the following conditions apply:
– the r.m.s. PROTECTIVE CONDUCTOR CURRENT shall not exceed 5 % of the input current per
line under normal operating conditions. If the load is unbalanced, the largest of the three
line currents shall be used for this calculation. To measure the PROTECTIVE CONDUCTOR
CURRENT, the procedure for measuring TOUCH CURRENT is used but the measuring
instrument is replaced by an ammeter of negligible impedance; and
– the cross-sectional area of the PROTECTIVE BONDING CONDUCTOR shall be not be less than
that of the conductors in table 3B (see 3.2.5), with a minimum of 1,0 mm2 in the path of
high PROTECTIVE CONDUCTOR CURRENT; and
– one of the following labels, or a label with similar wording, shall be affixed adjacent to
the equipment AC MAINS SUPPLY connection:
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
WARNING
HIGH TOUCH CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY 引用第1楼lynn305于2007-05-21 14:12发表的:
BARRY:
见下文, 还是有限制的,只是限制的方法不同,条例是我在IEC60950中找的,回头我也找UL60950看看是不是一样的.
.......
唉，記憶還是不可靠呀。。。
謝謝lynn305的幫忙。。。
5.1.7要和TABLE 5A结合起来看的, STATIONARY EQUIPMENT的接触电流限制是3.5A. 引用第0楼barry于2007-05-19 16:39发表的 永久性安裝設備的漏電流問題 :
映像中，UL 60960-1中，固定安装的（permanentlyinstallation），是不需限制测漏电流，只需要加一個警告語句即可。
誰能幫找找條文出處。（最好能貼出來）
我的UL 60950-1打不開，很郁悶。。。
找了个UL60950看了看, 说法和IEC60950的一样, 发上来你自己看看. 引用第3楼lynn305于2007-05-21 14:19发表的:
5.1.7要和TABLE 5A结合起来看的, STATIONARY EQUIPMENT的接触电流限制是3.5A.
更正一下：
滿足5.1.7要求的STATIONARY EQUIPMENT為“輸入電流”的5%.
不滿足5.1.7要求的STATIONARY EQUIPMENT為3.5mA 以前的一个印象，MS永无超过5%的可能。由测试方法决定的。
随便说说，没仔细算过。
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