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4.31 Insulation between circuits' K6 O0 P7 d1 Z
Luminaires incorporating transformers or controlgears providing insulation between circuits and
/ @/ B9 G( I1 w1 l) Wluminaire using circuits insulated from a LV supply, shall provide suitable insulation between4 t8 `- W0 y& I' K7 ~$ Z2 [# I
circuits and between these circuits and the external accessible parts./ ?7 Y/ A( Y) ` q1 a, n
The same requirements apply to the circuits connected to the control interface of a controllable
+ F' j f( t1 I) P7 w: l3 S2 Hluminaire where it is required to maintain the same level of insulation for all components. On2 ~- s( o" Q' M! P, t
the evaluation of the type of circuit to be considered, the information given by the controlgear
+ k! W8 j# c' k5 Emanufacturer (see 7.1.k of IEC 61347-1) shall be taken into account.% G6 G5 y. A% n4 ] A
Note: at present on the market the following types of control systems are available:
, V* G$ j8 i* t4 D3 e, n. i m- FELV Control signal, basic insulated to LV Supply (e.g. Digital Addressable Lighting Interface and I6 N% x3 d/ ^6 t- Z
1–10 V DC controls)
% ], k: `$ X, B* k% d- SELV Control signal, (e.g. DMX)
7 o& `# y- ?. I% L2 y! M+ n- Control signal, not insulated to LV Supply (e.g. Push button control / phase cut / step dim)
: ~6 w$ l( I- v' m6 U! w* y, WCompliance is checked by the following requirements.
! d1 Q' r0 `7 X! | i' y3 [. T0 t O( `6 i; i) L
4.31.1 SELV circuits
" ?+ n/ g/ H- d8 TThe following sources may be used to supply SELV circuits:- L: N9 q- A" h7 g
- A safety isolating transformer in accordance with IEC 61558-2-6 or equivalent part 2 of
# G/ |0 g0 x. m; N8 k61558" ~1 p) \3 ^; b! `
- A controlgear providing SELV in accordance with IEC 61347 Series2 V( C' B! D* Q. `; a9 j7 y
- An electrochemical source (e.g. a battery) or another source independent of a higher
* u* y4 R3 v( v6 h4 g4 q" s5 ]4 tvoltage circuit
8 {2 x( C8 O* u r8 i) m$ W+ z) uThe voltage in the circuits shall not be higher than the limits defined for ELV.
' m6 \0 p! I; \5 d3 K* }' g+ sSELV circuits shall be insulated from the LV supply by double or reinforced insulation (based
0 |# [+ [; z5 P2 A" W/ l l- g0 Lupon a working voltage equal to LV supply voltage).
7 q' c' s/ E+ \SELV circuits shall be insulated from other non SELV circuits (excluding FELV) by double or
: q( {/ F# p# P: O; j7 sreinforced insulation (based upon a working voltage equal to highest voltage in the circuits).# Q$ N9 V2 v( _5 e$ O
SELV circuits shall be insulated from FELV circuits by supplementary insulation (based upon a% g6 Q ?+ b ~* M! C* {3 j
working voltage equal to LV supply voltage).
' F9 o6 v0 m, j) O4 L5 Z# ?' vSELV circuits shall be insulated from other SELV circuits by basic insulation (based upon a$ C( k& N- B7 p) K* {' j
working voltage equal to highest voltage in the circuits)* P. K) A, P& A. E" H8 j& V
SELV circuits shall be insulated from accessible conductive parts by an insulation according to. Y$ | y" _! h; o; W% t
table 1 in Annex X.
7 R% A' h* S& FNote: In case of controlgear according to IEC 61347 series, the SELV voltage to be considered for5 J w( }7 {; ?2 ?, ~- z, {+ M3 I
insulating purpose in the maximum output voltage indicated on the controlgear as “U-OUT”., m V; S! s5 B, j
Compliance is checked by inspection and by the test required in clause 8, 10 and 11 of this
, Q7 b# _1 p6 N v; Nstandard
" L. k/ n* }- g7 \+ i/ ?0 u" ?7 _Plugs and socket-outlets in SELV systems shall comply with the following requirements: X9 U% \5 N" E( \" M
- plugs shall not be able to enter socket-outlets of other voltage systems;' ~4 K9 U. T. K& h& I9 B4 H. e
- socket-outlets shall not admit plugs of other voltage systems;
/ }! A- a. h$ X+ @- plugs and socket-outlets in SELV systems shall not have a protective conductor2 Y4 P- T8 f4 L5 v" c
contact.2 @1 \7 A! ?, A" ]1 K8 [/ T
Compliance is checked by inspection
" D* S, q) f, ~6 ]% x% K% n' F# B! f% J6 \
4.31.2 FELV circuits$ ~# M) U1 Q7 O. g _5 Q
The following sources may be used to supply FELV circuits:
( t/ i P M) v, n! o- X) e) W- A separating transformer in accordance with IEC 61558-2-1 or equivalent part 2 of
2 X. w# a& _. e. H" }* f$ a: k615587 b% f5 ]' b1 w% B6 R+ l1 } R! U
- A separating controlgear providing basic insulation between input and output circuits in, W- a7 p& O7 C' F+ z+ V
accordance with IEC 61347 Series
0 Q: A3 f& l; W" W7 O- An electrochemical source (e.g. a battery) or another source in circuit separated by the, O: Y% a: U4 X, ?1 V1 {7 N
LV supply by basic insulation only.
2 N5 ?. w' t6 i# |The voltage in the circuits shall not be higher than the limits defined for ELV.
; N; X% \# j0 A" b/ s, t$ xFELV circuits shall be insulated from the LV supply by at least basic insulation (based upon a( J; h% V1 Z, G; \& W1 z. ]2 @
working voltage equal to LV supply voltage).
( j& P( F0 e1 S) Q6 b0 k1 K0 PIt is not required that FELV circuits shall be insulated from protective earth circuit except for
3 z( [4 j. E8 n1 m) Ifunctional purpose.) ]- L; T7 W; y6 j3 ]0 w6 A
FELV circuits shall be insulated from by an insulation according to table 1 in annex X.: e R$ I& m) ? _! L# Q
Compliance is checked by inspection and by the tests required in Sections 8, 10 and 11 of this
: K! d3 ?3 w4 L @5 B- g& nstandard
* E e4 M0 \" }2 C, M! ZPlugs and socket-outlets for FELV systems shall comply with the following requirements:. a- K0 j3 h$ _
- plugs shall not be able to enter socket-outlets of other voltage systems;
9 k6 T! j/ v. g4 G) S6 o- socket-outlets shall not admit plugs of other voltage systems;
; r( s6 @) N& B- socket-outlets shall have a protective conductor contact.
0 B) n" n/ ?4 y; fCompliance is checked by inspection
3 m- T+ F; U1 e' @7 {, M' N" t0 F5 ]: v+ x
4.31.3 Other circuits:2 D4 L1 `( ?+ s: \) Z, ]. C; v
The insulation between circuits other than SELV or FELV and accessible conductive parts shall8 I8 ~' R. q \$ g
be in accordance with the requirements in table 1 in annex X.& _4 Z$ B3 y/ Z& j- d5 o: u
In class II construction, where equipotential bonding is used for the protection against indirect
7 U- y8 P" w6 Zcontacts with live parts (see table 1 in Annex X), the following requirements are applicable:
- X# e" x9 A: H3 n, ^- All conductive parts are connected together so that two failures of the insulation result! b m6 b9 `2 n- h. c" B( d
in a short circuit, m# l" K/ p' I& n# G* H
- To check whether the conductive parts are reliably connected together, the test in& q9 O3 n( j+ A
7.2.3 (earth continuity test with 10 A) have to be carried out
% N0 q( F8 v0 D1 J' H7 o# }- the conductive parts comply with the requirements of annex A of this standard in case% T' i5 h7 M, q( Z7 A) r2 R
of insulation fault between live parts and accessible conductive parts.5 w0 h7 v6 u- \' i% p& i3 r- c5 U2 d
- For master/ slave applications (the control gear is mounted in the master luminaire and
) |6 A; l' V* D) w# `% o0 k3 H1 msupplies the slave luminaires) an equipotential bonding between the luminaires shall be
: n, v( y0 Y9 q1 Tused to prevent dangerous voltages between accessible luminaires. For this reason
; |( }0 J2 y" Y0 Nmaster luminaire shall be provided with a terminal to connect accessible conductive& v) }- \% m4 X! F, d, U- {
parts of the slave luminaires and the slave luminaire shall be constructed as class I
3 q d p6 }3 t( e, u' |luminaires." n" b0 o/ U* s
Compliance is checked by applying the requirements of this standard to check to the insulation
3 [+ g, w0 c) `7 I( a& @" D! Y9 mrequired in Annex X
" p9 |3 t' x- u# n* Y- B8 Y! w5 T- z8 m
Note: Example of this kind of circuits are:
! c4 Y# q4 {& F/ V* p0 Y- output circuits of ballast according to 61347 series
( O. P" y5 _! S. ~* y" i9 [- circuits supplied by isolating transformer according to IEC 61558-2-4 or equivalent& L- C2 L# j+ m( A- q ]
- circuits supplied by separating transformers according to IEC 61558-2-1 which do not fulfil the5 I" q2 p! E/ U9 V7 Y1 O d
requirements for FELV( H1 G7 U$ Y- b3 y3 t0 q Y! T
- circuits supplied by separating controlgear (other than FELV) and isolating controlgear
) _, W5 f: J: B6 q y+ A% caccording to IEC 61347-Series# n9 M. b6 M3 {! @
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