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BS EN60335-1:2002 cl15.1
" p; q. ~, G! }7 t4 i& \+ @For IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis
* A) N" j) b$ o$ C% i+ |of the oscillating tube. However, for appliances normally used on the floor or table, the
' F, c( @0 L* L" B7 wmovement is limited to two times 90° from the vertical for a period of 5 min, the support being
5 ~ u5 P) f; U) X6 Q+ Xplaced at the level of the pivot axis of the oscillating tube.
( }) o3 v1 f1 Z! p b! tIf the instructions for wall-mounted appliances state that the appliance is to be placed close to1 I5 Z( W H: f. }! h. _' }
the floor level and specifies a distance, a board is placed under the appliance at that
% Y2 I m. {! i' }; wdistance. The dimensions of the board are 15 cm more than the horizontal projection of the
: a( I( T. y1 mappliance.. T" K& z7 X1 s8 U! x% R4 [! I) ^
Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated
" t- B4 K5 ^& asupport that is constructed to prevent water spraying onto its top surface. The pivot axis of the: z. N; O. ]6 G" g! ]& ]0 j$ |
oscillating tube is located at the same level as the underside of the support and aligned
* Z3 S. K" s! d3 ^# I7 xcentrally with the appliance. The spray is directed upwards.6 G+ \! N# U8 k6 s
For IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for
8 ^( c' F' o! b/ I& ?a period of 5 min.
& P: b, z4 X4 l2 J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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