标题: PDSH 799 Relays only operate to ensure appliances are energized for normal use [打印本页] 作者: 小米 时间: 2012-9-14 14:28 标题: PDSH 799 Relays only operate to ensure appliances are energized for normal use
Relays only operate to ensure appliances are energized for normal use 9 o) L- V2 ^; j, j& y
19.14 . a: S$ o: u6 ~
60335-1(ed.5) 8 U, O7 @( W+ Y: A) }1 T$ j
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Standard(s): IEC60335-1(2010)& K1 w( J' t9 P4 \( f. P* }
Subclause(s): 19.14+ f* k7 n2 c4 O# I" j* M1 O
No. Year 20129 s( z, V& h& Z
PDSH 0799 # F# c% h) E' F! ^+ h! NCategory: HOUS, d8 `2 J0 X' N5 ]
Developed by: ETF 11 o, t( h- b( \. {; k& i
Subject: Relays only operate to ensure appliances are energized for normal use" n* A# b! k( [; X$ D* x& t" i; D
Key words: & X( R- ]2 ?3 C4 B$ s6 ^- Short-circuit2 i& G8 O$ I4 k: q# F# E( t
- Motor Start Relay 0 K% t: p) o- B5 i2 fTo be approved at the 2012 CTL Plenary Meeting 7 ]! ^7 u8 x4 k6 tQuestion:. s- k6 t/ G( Z X- {
The following is stated in the third paragraph of Sub-clause 19.14: 8 \' A! f; l# s) Z4 m“Any relay or contactor which operates only in order to ensure that the appliance is energized for8 _6 c- v3 I7 \& a8 {
normal use and that does not otherwise operate in normal use is not short-circuited.”7 g- U: J$ r( s Y5 V' T
Is the motor start relay shown below covered by those specified as “not short-circuited” in the third- Q: I9 p: l$ ^+ ?* L: Z. l
paragraph of Sub-clause 19.14? C2 d5 O4 L M8 {) y# @* R0 Y6 p
Decision: 3 }8 x5 r0 d8 }! |" X0 eThe motor start relay as shown above is not short-circuited.' T+ \% Q: r% s4 {0 o \
See also explanatory note.+ P: S4 I. t/ B- r! `' T# d
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[attach]75967[/attach]/ Y$ N$ k* L! T4 _( t
PDSH 799