DSH 109/06 Endurance and thermal tests on apliances for purifying water usig an

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IEC60335试验指甲

DSH 109/06 % ~$ c2 m  V8 P& x) a/ Q ! }  h+ e3 A7 x5 a* ]

Endurance and thermal tests on apliances for purifying water usig an UV lamp

11-19 / 12

60335-1(ed.3) & 60335-1(ed.4) & 60598-1(ed.5) & EN 60335-1:1994 & EN 60335-1:2002 & EN 60598-1:2000

Standard: IEC 60335-1/1991
6 Y$ T" c' z4 \7 L9 {IEC 60335-1/2001
+ e7 w$ L, m1 hEN 60335-1/1994
* f* }) C  x, o% s' Y  wEN 60335-1/2002
, `" b  D1 S& w- l# F/ W8 z$ Z; eIEC 60598-1/1999
- v' K2 `1 T- W- a+ TEN 60598-1/2000
Sub clause: 11 - 19 12
Sheet N°: 109/06
$ V3 s9 ]0 r: {& `8 s, PSubject: Endurance and thermal tests on appliances for purifying water using an UV lamp
Key words:
8 U! A3 ]2 h7 N& i# K( u/ y- Thermal tests
- Abnormal conditions
; B: T6 W0 [+ U- Temperature of water flowing
7 O2 H! `, y  {* b2 }/ oMeeting: Decision confirmed at CTL 41st meeting
Question: The appliance for purifying water is equipped with an UV lamp (with its
accessories). The unit can be used with or without a constant water flowing (in
% k! m5 o1 G; v% w" yaccordance with the manual instructions). What should be the temperature of
7 W" z; }" v* v" o+ jthe water during the thermal tests?
$ |1 e1 g6 O8 n$ G2 B2 I/ zDecision: The applicable standard is IEC/EN 60335-1. The thermal tests have to be
: g- G; a8 r8 @0 _! Y& {' \carried out according to clause 11 (heating) and clause 19 (abnormal
( P) B5 G0 a# B+ Z4 S- c, m5 a5 jconditions) of IEC/EN 60335-1. If according to the manual instructions the
appliance can be used without water flowing, we have to consider this situation
0 ]3 f* o6 `: P1 G" H- W+ {, c1 ]as worst case: all tests have to be performed without water flowing. At the
beginning of the tests, the water shall be at room temperature (25°C). If the
) \% G3 W; [1 ~- h2 pappliance is provided for use with water flowing only, the heating test (clause
11) shall be started with water at room temperature (25°C) but flowing. For the
( S( |2 K4 K7 X/ yabnormal conditions test (clause 19), the water flowing has to be stopped
4 V7 e' s2 V4 P2 funless there is a monitoring circuit to switch off the appliance in case of water
flow interruption. At the beginning of the test the water shall be at room
7 U3 }. N2 r. Otemperature (25°C).
9 J4 t: |% Q1 B& U4 a( ^% F, @- b) w