DSH 279 thermal cut out requirements

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DSH 279

thermal cut out requirements

24.101

60335-2-61(ed.1)

% C+ s% R9 O2 y' ?0 _+ JStandard: IEC 60335-2-61:Ed. 1.0 Sub clause: 24.101 Sheet n. 279
Page 1 (1)
Subject: Thermal cut out requirements
. T0 C0 a0 c$ J- Z7 }: |Key words: - thermal cut-out   - self resetting
Decision n.20 taken at 36th meeting/1999
$ d( [3 K; K$ M3 z: a% IQuestion: sub clause 24.101 reads: “if thermal cut-outs which limit the temperature of the
core are incorporated, at least one shall be of the non-self –resetting type”.
Does this mean that:
1.1 It is not necessary to incorporate a thermal cut-out in a thermal storage heater.
8 z# `5 v+ U& D: C4 A5 H1 e1.2 There is no obligation to incorporate a thermal cut out of the non self resetting
8 `& E+ v& ?- Y/ b+ s# g% ltype, if, to fulfil all the requirements of the standard, the appliance is equipped with
0 I- ]9 D5 Q' |" C8 o2 F& za second thermostat or temperature limiter.
2. At least one thermal cut out has to be of the non self resetting type, if the appliance
/ Z  G2 u9 I% v$ W. L! a. vis equipped with more than one thermal cut-out
Decision:
% T0 }6 U- A2 b, E) I1.1 Yes
1.2 No, at least one of the control devices which operate during clause 19 (when control
2 {% p' f: f7 a$ _1 X6 n+ {devices operating in clause 11 are short-circuited) shall be non self resetting.
* T- `6 f" N: Z' J( V% j5 `: m* Z2. Yes
1 [' w9 U3 V. M$ d4 }- Y$ i1 _

7 A1 q- @8 N8 Y  N% }