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BS EN60335-1：2002 cl15.1
0 l" s9 c E; ^For IPX4 appliances, the horizontal centre line of the appliance is aligned with the pivot axis
0 c! _) ] |2 d7 Y9 x* dof the oscillating tube. However, for appliances normally used on the floor or table, the% H j- ?! q+ |& E! P* C# r6 ~
movement is limited to two times 90° from the vertical for a period of 5 min, the support being/ S0 b2 R$ |# r% Q8 I8 b
placed at the level of the pivot axis of the oscillating tube.4 _* [+ G) Y7 p0 d/ r
If the instructions for wall-mounted appliances state that the appliance is to be placed close to; k6 U+ s% C6 R
the floor level and specifies a distance, a board is placed under the appliance at that$ W7 G+ [7 c4 O3 p
distance. The dimensions of the board are 15 cm more than the horizontal projection of the
6 o3 u! _6 O! rappliance.
/ m8 f5 M" N# ~& {) ?8 r0 w% m1 x# [Appliances normally fixed to a ceiling are mounted underneath a horizontal unperforated
4 F4 P. L0 ?- q5 Z4 L& c9 csupport that is constructed to prevent water spraying onto its top surface. The pivot axis of the. ^' n, { m7 s I3 j2 v
oscillating tube is located at the same level as the underside of the support and aligned" d. E( g9 X% Z D( x, ~/ W% t i
centrally with the appliance. The spray is directed upwards.
+ s: H! c* I; O/ |, DFor IPX4 appliances, the movement of the tube is limited to two times 90º from the vertical for
6 }$ Q" x) a2 ta period of 5 min.) R* T1 L$ f9 p* G/ ]+ B
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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