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| PDSH 799
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| Relays only operate to ensure appliances are energized for normal use8 b# k7 _0 x2 \. b
| 19.140 ?! Z" H! A' v% c) L
| 60335-1(ed.5)
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- z' j0 S/ G" D& l: l6 y% IStandard(s): IEC60335-1(2010)
5 ^& y" D! p+ V9 f6 _Subclause(s): 19.14$ w; F7 E5 E+ J& v6 b
No. Year 2012
b0 @; x# X* G# V' fPDSH 0799
2 B. {" V( k( W6 SCategory: HOUS- H( C2 U3 v4 n, Q
Developed by: ETF 1# R$ ?8 i. w6 [5 w
Subject: Relays only operate to ensure appliances are energized for normal use
3 n5 Q/ W, n) X4 {7 bKey words:
! }5 H9 a1 q9 y9 g( ]# O- Short-circuit- k0 l! h7 N: ], n7 V
- Motor Start Relay
" l' B N4 K- R- v4 eTo be approved at the 2012 CTL Plenary Meeting
o6 Y! G& n1 U; nQuestion:
+ M6 z% K6 k/ w9 M- q* Y3 \4 fThe following is stated in the third paragraph of Sub-clause 19.14:
0 O/ x% \) p- J5 c' a% o% W' p“Any relay or contactor which operates only in order to ensure that the appliance is energized for2 J( D+ F9 U2 P' ~0 y
normal use and that does not otherwise operate in normal use is not short-circuited.”
9 I# `# Y. ~1 A* T5 ?5 W7 r9 _& AIs the motor start relay shown below covered by those specified as “not short-circuited” in the third
& ~2 @0 ^ y4 w+ C3 K2 w# f- C- Hparagraph of Sub-clause 19.14?4 N, t: [& ]5 ~' z: S G( f- V
Decision:2 O1 y. O# R* X
The motor start relay as shown above is not short-circuited.
$ K7 [9 G$ v. W% p6 T9 \See also explanatory note.7 H6 w$ e5 D( D+ {5 o. c$ V+ ?2 h0 I
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