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UL60065和CSA60065中都有,请看如下的描述:
]; }# u* m0 F+ }% f! ^The resistance of the connection between the PROTECTIVE EARTH TERMINAL or contact, and parts required to
& _# e4 T$ z" p3 x! qbe connected thereto, shall not exceed 0.1 W." s, ~2 W: n) m
Compliance is checked by the following test:- K5 T& H* d3 c$ h1 ~
The test shall be carried out for 1 min with a test current of 25 A a.c. or d.c. The test voltage shall not ~, s5 |1 n- e! [- r; P+ c
exceed 12 V." r8 `7 b. u+ [
NOTE 2 – In Canada, a 30 A test current is used. |
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