|
本帖最后由 qij1979 于 2018-4-8 15:23 编辑
8 \) p9 _; B1 F/ V, A
- z* o$ y: d e/ W3 h4 ^, V5.3.1.2
4 ~+ s2 K! l. W0 R8 t: D9 dReplace the first dashed list item with the following new text:
( ^( ?3 R. } d+ o4 R4 g& |" o– the minimum cross-sectional area may be less than 0,4 mm2 if overheating of the wire
, E: k2 ~! H2 M: |, V& Rconductor insulation is prevented under normal and short circuit operating conditions in
, Y: e+ P6 E& G. t. Q0 aaccordance with the tests of 5.4; & \% N) l; e1 [ {) I- w
Add, at the end of 5.3.7, the following new Clause 5.4: - c' J8 [( v4 V: v6 f
5.4 Test to determine suitability of conductors having a reduced cross-sectional area 0 {7 D9 A: [' R3 S+ O) l* B
To determine suitability of conductors having a reduced cross-sectional area, connected to
4 ~5 O' q0 `- |+ i" F' Ccontrolgear that limits the current to 2 A, the following test shall be conducted:
t8 w' B/ [# ~/ ua) disconnect the conductors being evaluated as close as practical to the lights source in the! r7 q7 {" o* T7 i+ Z
luminaire and attach a resistive load using minimum 1 mm2 cross section test leads; these7 k% L0 o5 k: N4 t( Z- P" v
leads shall be routed out of the luminaire in a manner that will have the least impact on/ b' c/ @: _& m1 I3 l' I2 B; A
temperatures within the luminaire;
* Y7 c/ E' W( M Rb) adjust the resistive load to measure the maximum output current of the control gear,
3 g* H% @5 l. P' c$ F$ Hmaximum measured current shall not exceed 2,5 A; % C h P2 o7 F8 U; l9 N
c) with the resistive load set to draw maximum output current, conduct the thermal test in
/ o% V* ?1 G' I. z8 kaccordance with 12.4. (see Figure 33);
: `% C! n, B# u. T9 W$ _) J9 pd) the resistive load is then set to 0 Ω (short circuit) and the thermal test repeated in
0 t6 A0 v" C6 z1 V' ]. }$ Q8 paccordance with 12.4 (see Figure 33); 1 b; a; R+ K+ N$ T" V H1 k
In no case shall the temperature of the luminaire wiring insulation exceed the limits stated in
; s, f2 o) K. b2 V# I5 QTable 12.2 nor shall there be any indication of damage to luminaire wiring. ' r* c1 K2 u6 t$ b; M f% B* K( N
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看,没有账号?注册安规
x
|