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4.14.6 Plug-ballast/transformers and mains socket-outlet-mounted luminaires shall not impose* k0 A/ x2 C5 J
undue strain on socket-outlets.2 f6 e* Q- x, P
Compliance is checked by the following test. The plug-ballast/transformer or mains socketoutlet-1 V( E$ S8 t% H! p0 Z2 V7 l
mounted luminaire is inserted, as in normal use, into a fixed socket-outlet pivoted about
3 Y& l8 Z7 m( V! W6 V" x" za horizontal axis through the centre lines of the contact tubes at a distance of 8 mm behind the
) i; q$ T$ m. A: r. b" Gengagement face of the socket-outlet.
$ I7 {; K) s2 E+ ~# KThe additional torque which has to be applied to the socket-outlet to maintain the engagement
. d& Q7 ~4 O7 @$ e% F7 Wface in the vertical plane shall not exceed 0,25 Nm.
6 B" a% k! z. W. lFor adjustable mains socket-outlet-mounted luminaires, the total torque transmitted to the4 q. _7 y, E. i+ H
socket-outlet during adjustment shall not exceed 0,5 Nm.; _) U+ k; M( q- H% I& {
The socket-outlet used for the test shall have the earth contact (if any) removed unless the: R1 f% ~9 L! O, s8 F ^
socket has shuttered pin receptacles that are uncovered by the action of inserting the earth
* R4 Y/ ~) ^+ p7 [pin.& j+ e+ a7 K3 S4 h' {
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? k4 ?$ N& Q8 Q- c4 v
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