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4.14.6 Plug-ballast/transformers and mains socket-outlet-mounted luminaires shall not impose2 U5 }: V. g: A( J- v1 n
undue strain on socket-outlets.+ n0 |$ t8 f: w
Compliance is checked by the following test. The plug-ballast/transformer or mains socketoutlet-
$ p, Y" j1 i/ F& q& kmounted luminaire is inserted, as in normal use, into a fixed socket-outlet pivoted about- N: S7 _4 l O( y6 x* [
a horizontal axis through the centre lines of the contact tubes at a distance of 8 mm behind the+ A: B, c' b. r" ]5 Q1 {! ?
engagement face of the socket-outlet.
2 b$ }) A: Q; H% lThe additional torque which has to be applied to the socket-outlet to maintain the engagement, ?4 g- t9 i8 w( {$ J
face in the vertical plane shall not exceed 0,25 Nm.
6 [$ w! i# E0 P, `For adjustable mains socket-outlet-mounted luminaires, the total torque transmitted to the7 }% Y" b2 X! g9 I( Z
socket-outlet during adjustment shall not exceed 0,5 Nm.$ W1 C& z# u: s) b4 _
The socket-outlet used for the test shall have the earth contact (if any) removed unless the% ]$ Z# {# K; O/ o. P6 w
socket has shuttered pin receptacles that are uncovered by the action of inserting the earth
- m$ m! z5 H0 s; l G/ Bpin.9 i& @" u7 `. a- `
防水式的插头式变压器,见图,测扭矩时,以哪个平面为零位(中心平面)?平面1,为插入到普通插座上的接合面,平面2为插入到防水插座时的一个支点,哪个才是对的?* x2 i& c4 X, k
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