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BS EN60335-1:2002 cl15.1
; A7 W: `7 B) o& v* RFor IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis- x w* d, Y# Z/ f( k" T3 `3 Y8 Y5 F
of the oscillating tube. However, for appliances normally used on the floor or table, the
1 e% ?: R/ N4 O/ G- J9 N: I, F9 ~( `movement is limited to two times 90° from the vertical for a period of 5 min, the support being
0 @; t4 X+ `/ Z* n: V6 Vplaced at the level of the pivot axis of the oscillating tube.
4 g' v; L8 d9 aIf the instructions for wall-mounted appliances state that the appliance is to be placed close to
" ^+ D9 _1 U( W b/ @$ J. j3 Zthe floor level and specifies a distance, a board is placed under the appliance at that
( B6 d# J! n9 _7 f) d3 fdistance. The dimensions of the board are 15 cm more than the horizontal projection of the
# f* `+ P5 [+ Dappliance.8 E$ v, @" K7 H$ l/ q
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated
4 c2 P, U+ { L5 ?+ h: ~2 [support that is constructed to prevent water spraying onto its top surface. The pivot axis of the- D" }9 A: o6 l8 I
oscillating tube is located at the same level as the underside of the support and aligned
$ @3 Z3 |+ F, o5 O: ?. w+ ~0 {+ mcentrally with the appliance. The spray is directed upwards.
5 y' f) ^0 ~- \( u, V6 B7 QFor IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for) ~" D9 \8 n) K: B4 V, t$ R
a period of 5 min.
2 Z0 z! ?1 q; t. p标准写的很清楚角度应该是左右各90度。那个正负180是指的一个周期 |
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