DSH 457 Abnormal operation

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DSH 457 4 w6 P' y% [9 |, Z) w; _9 M   B9 h9 ]  Z$ M( m7 ]5 W

Abnormal operation 4 D0 e1 h: l! c! p. t

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60335-1(ed.2)

Standard: IEC 60335-1:1976, 2nd Ed.
Sub clause: 19
; U4 k! f. E$ _5 p" N1 ZSheet No. DSH-457
Subject: Abnormal operation
1 M+ O( [# R! c9 G$ qKey words: - thermostat an thermal cut out within the same component
Decision taken at the 40th CTL meeting 2003
) ~1 Z8 X( f* q4 q/ W( I8 kQuestion:
How is a component with a thermostat or thermal cut-out or both within the same
component, having only one temperature sensing device, but operating two or more switch
$ B( s" R5 m4 V/ d2 i) b0 ], rparts in separate circuits tested?
Rationale:
See question.
3 W; ~4 x* w. }! c$ I* vDecision:
When a part of this component has to be short-circuited during the tests, all switch parts are
/ Z# ]- i! u9 q  Fshort-circuited.

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