PDSH 799 Relays only operate to ensure appliances are energized for normal use

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PDSH 799 4 p( |- v9 t1 B+ j2 k % Y9 B: b6 T& o

Relays only operate to ensure appliances are energized for normal use

19.14

60335-1(ed.5) + R5 i# P3 z2 ^, k1 e9 W

Standard(s): IEC60335-1(2010)
2 R3 m7 b8 k' T9 QSubclause(s): 19.14
' }( C$ }$ v, n2 r# |No. Year 2012
* b5 s7 g) S, i! LPDSH 0799
Category: HOUS
Developed by: ETF 1
Subject: Relays only operate to ensure appliances are energized for normal use
: Q( e( I: G% ^4 a* |* {Key words:
* k0 F$ s, g* }. N6 w" Z( j; I- Short-circuit
' T) ?+ W( \: c5 k( v0 H% v- Motor Start Relay
To be approved at the 2012 CTL Plenary Meeting
+ g+ B: Q, f7 P* k1 Z2 ~7 k+ z: c" }5 UQuestion:
The following is stated in the third paragraph of Sub-clause 19.14:
$ u3 W+ b6 W7 ]+ g9 ~“Any relay or contactor which operates only in order to ensure that the appliance is energized for
8 ]4 K8 v: n6 \5 ]8 r1 U3 Lnormal use and that does not otherwise operate in normal use is not short-circuited.”
! Y' u) h8 Z6 j2 @9 vIs the motor start relay shown below covered by those specified as “not short-circuited” in the third
2 R, Z) Q2 L: [$ {9 y& Lparagraph of Sub-clause 19.14?
Decision:
The motor start relay as shown above is not short-circuited.
See also explanatory note.
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