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4.31 Insulation between circuits: B" M; q3 k. ~
Luminaires incorporating transformers or controlgears providing insulation between circuits and
$ |9 V6 H) i* G* @luminaire using circuits insulated from a LV supply, shall provide suitable insulation between
) `1 T- c+ M- ?circuits and between these circuits and the external accessible parts.- f# I9 c D6 f0 Q# Y
The same requirements apply to the circuits connected to the control interface of a controllable! Q' E3 S' B% ?7 U% i+ }+ j H& s
luminaire where it is required to maintain the same level of insulation for all components. On) U' E1 l4 U. q' M
the evaluation of the type of circuit to be considered, the information given by the controlgear
5 j+ l: b6 |( e1 e' d8 A, Z5 [& @3 ?manufacturer (see 7.1.k of IEC 61347-1) shall be taken into account.' q4 u. \" l# c% i
Note: at present on the market the following types of control systems are available:
% R5 J9 U5 f4 V3 o! @- FELV Control signal, basic insulated to LV Supply (e.g. Digital Addressable Lighting Interface and8 ]( k; L% ]6 y; Z+ h; \" V' G
1–10 V DC controls)# d# M* m0 E, W$ l9 |% l
- SELV Control signal, (e.g. DMX)
' o0 K, z: o* i+ B- H( V- ?- Control signal, not insulated to LV Supply (e.g. Push button control / phase cut / step dim)& B% ?! O% _7 A. T; h3 X
Compliance is checked by the following requirements. g" O0 ? v6 {5 |* k3 B# W) t
# }3 O) \! e) P8 p6 k4.31.1 SELV circuits, c0 i6 P% N6 o: v' a# \ }- @
The following sources may be used to supply SELV circuits: B) t$ U6 x0 n
- A safety isolating transformer in accordance with IEC 61558-2-6 or equivalent part 2 of
5 y5 M, j# Z. S0 h+ f8 t61558
) F2 ~7 `# O. j3 t& f: O- A controlgear providing SELV in accordance with IEC 61347 Series
' Y+ B: S/ A [+ U- D- An electrochemical source (e.g. a battery) or another source independent of a higher
" @! P2 P' Q7 z% O* Kvoltage circuit
/ B4 Q! }4 W q o" ] ZThe voltage in the circuits shall not be higher than the limits defined for ELV.! Z1 j n8 p1 V' @- ?: p _" z
SELV circuits shall be insulated from the LV supply by double or reinforced insulation (based
# w; s+ F3 S1 M" |& |upon a working voltage equal to LV supply voltage).- U7 H: Q, S' X4 Z* N" B, R, L
SELV circuits shall be insulated from other non SELV circuits (excluding FELV) by double or
1 p5 w" m7 G+ C+ r( @reinforced insulation (based upon a working voltage equal to highest voltage in the circuits).; m9 e. Q- h1 R D6 N: ?1 ?
SELV circuits shall be insulated from FELV circuits by supplementary insulation (based upon a/ W7 Z8 `* |+ d" q# M2 G" @/ S
working voltage equal to LV supply voltage).2 L& y' s7 g" ~( l5 ~+ k& n& ^
SELV circuits shall be insulated from other SELV circuits by basic insulation (based upon a6 v8 a4 T0 x: T+ h) ~6 z
working voltage equal to highest voltage in the circuits)2 X, r2 u. j- b h. U
SELV circuits shall be insulated from accessible conductive parts by an insulation according to
# S, e6 B. }$ o5 H3 }* S$ dtable 1 in Annex X.
0 ^4 R5 K) w5 w- ~; q: v0 vNote: In case of controlgear according to IEC 61347 series, the SELV voltage to be considered for
3 R$ n5 |& P P) Q1 c; pinsulating purpose in the maximum output voltage indicated on the controlgear as “U-OUT”.
5 O& D+ C8 Q0 J7 `. P* k( jCompliance is checked by inspection and by the test required in clause 8, 10 and 11 of this
3 K) h8 w) J: j' W$ w r" lstandard5 L; M. E8 M% {' q$ I0 h
Plugs and socket-outlets in SELV systems shall comply with the following requirements:( _9 z! f; O0 d' O- x
- plugs shall not be able to enter socket-outlets of other voltage systems;) t& k- c0 ` {( F6 O7 c$ b
- socket-outlets shall not admit plugs of other voltage systems;0 D6 z0 Q+ ]9 p- A: u/ L# g( ?( w
- plugs and socket-outlets in SELV systems shall not have a protective conductor9 X; |5 n; I# n5 T+ Y0 l. V
contact.
1 W+ W7 O5 L3 X, \( FCompliance is checked by inspection5 y0 ]# g$ v; P0 O# G- c5 p
- d0 Y& y' `. s, ]
4.31.2 FELV circuits+ \8 r8 g i h+ {# V. p
The following sources may be used to supply FELV circuits:* L! K! \0 I( r1 `! }* g( z
- A separating transformer in accordance with IEC 61558-2-1 or equivalent part 2 of
; c: I9 @; C0 N61558) n& E4 r x4 @, Q
- A separating controlgear providing basic insulation between input and output circuits in
$ i- f( j8 k: O1 haccordance with IEC 61347 Series2 ?1 M; Y4 o/ @4 J
- An electrochemical source (e.g. a battery) or another source in circuit separated by the& I& G7 H' Z: z! k7 x( V- F" ^
LV supply by basic insulation only.2 ^( @; k3 T6 B/ L& P0 a
The voltage in the circuits shall not be higher than the limits defined for ELV.
0 @' T# \$ r, o# Z3 M" EFELV circuits shall be insulated from the LV supply by at least basic insulation (based upon a
& U9 K: c( d8 j, p, s: G1 Gworking voltage equal to LV supply voltage).
. R4 D. G5 z* I3 Q- p( K5 N* k% HIt is not required that FELV circuits shall be insulated from protective earth circuit except for& H# I' \" f! Y, E9 N
functional purpose.+ T/ _* h) D+ g- C' Q, ?
FELV circuits shall be insulated from by an insulation according to table 1 in annex X.+ ]; q1 R$ P# ]8 D6 _
Compliance is checked by inspection and by the tests required in Sections 8, 10 and 11 of this4 x) K, m" E7 T6 \) N; g* X
standard
' T5 D* ]2 a$ @Plugs and socket-outlets for FELV systems shall comply with the following requirements:
& `0 b5 b/ h! l; K: j- plugs shall not be able to enter socket-outlets of other voltage systems;1 L' h! E6 ~: I5 b8 N( [6 C9 k
- socket-outlets shall not admit plugs of other voltage systems;
9 A3 p4 w' B* ?+ N+ e* _4 E+ L3 W- socket-outlets shall have a protective conductor contact.
* O, _; E) M! K: QCompliance is checked by inspection- D( H' h5 p1 A3 e# ^
" c2 u% [2 \3 b: }: ^8 Y4.31.3 Other circuits:
: \& r- }: W5 x- Q; VThe insulation between circuits other than SELV or FELV and accessible conductive parts shall; |8 X4 y& V' g4 g: Q2 g% I" b
be in accordance with the requirements in table 1 in annex X.& d+ ?9 P# G1 L! A8 ~+ i
In class II construction, where equipotential bonding is used for the protection against indirect
, X" I8 y4 o" ?8 O; z5 {8 P4 ~1 G) econtacts with live parts (see table 1 in Annex X), the following requirements are applicable:$ a! {& ^& d j, r$ E
- All conductive parts are connected together so that two failures of the insulation result5 L- q9 L: s) X* ~: t
in a short circuit
4 x/ g. a, M8 R1 a8 P- To check whether the conductive parts are reliably connected together, the test in
+ W$ ~# I% k9 |' i6 w6 t5 Z% i' }& t7.2.3 (earth continuity test with 10 A) have to be carried out
5 V/ Z* d! P2 Y- the conductive parts comply with the requirements of annex A of this standard in case
) ? ?. G* [) T0 T1 h# s. yof insulation fault between live parts and accessible conductive parts.) _8 V& A! i4 e& Y0 J! u7 W
- For master/ slave applications (the control gear is mounted in the master luminaire and5 a7 e8 m9 k( a' P
supplies the slave luminaires) an equipotential bonding between the luminaires shall be* ~0 |3 `: s' [& r$ V
used to prevent dangerous voltages between accessible luminaires. For this reason
5 p3 Q: U2 K& ?: P# ~5 Dmaster luminaire shall be provided with a terminal to connect accessible conductive
) [) _; X2 x5 r* o% G2 f2 _4 Iparts of the slave luminaires and the slave luminaire shall be constructed as class I
" v/ ~. b) o% T: p! \luminaires.
" I3 ~8 @. G% i' ^3 M% U( w8 QCompliance is checked by applying the requirements of this standard to check to the insulation% X. |# q! ?* A4 [( ~$ f; k
required in Annex X
! g, K/ e# x4 }9 L
6 N/ p* z- h3 t7 A [+ c% {' qNote: Example of this kind of circuits are:
, n/ ~' C* u# f0 K- A- output circuits of ballast according to 61347 series
+ U0 t) X: P7 g) H# ~" L. ~0 Q" p4 T- circuits supplied by isolating transformer according to IEC 61558-2-4 or equivalent; I& ?" j8 n T; l$ H u
- circuits supplied by separating transformers according to IEC 61558-2-1 which do not fulfil the
0 ^& h$ q" k6 B v# g% ~; I4 Wrequirements for FELV
4 ]( t. q7 s% h" R5 U" P- circuits supplied by separating controlgear (other than FELV) and isolating controlgear
: X" H$ b9 z2 ~# L& P' h9 ^according to IEC 61347-Series8 z( {3 _/ V8 {* m( A
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