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结合下 5.3.1.5 和 8.2.3 条款进行考虑 ——6 f3 f" `* Y2 Q1 m% g5 w
5.3.1.5 The SELV current-carrying parts do not have to be insulated. However, if insulation is
) s+ B% Y: ]) ^+ capplied, they shall be tested as mentioned in Section 10.
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8.2.3 c) SELV circuits may have exposed current carrying parts under the following conditions., K' k+ I+ P$ J, H, E8 n
– For ordinary luminaires:,* f" f! S0 E7 g
• the voltage under load does not exceed 25 V r.m.s. or 60 V ripple-free d.c. and
h. i4 u& B* \+ D- a3 H3 q• the no-load voltage does not exceed 35 V peak or 60 V ripple-free d.c.
' [/ ^% R( j$ N% {, b& ~- Fwhere the voltage exceeds 25 V r.m.s. or 60 V d.c., the touch current does not exceed:
9 @. Y$ T7 x2 G- e3 r• for a.c.: 0,7 mA (peak);3 y) Y, [: o y4 y5 {3 e3 l1 p
• for d.c.: 2,0 mA., Q3 h5 i* G! F( Y. Y- u. k
If the voltages or currents exceed the values given above, at least one of the conductive
4 Q* s$ @* v! y) j; \parts in the SELV circuit shall be insulated by insulation capable of withstanding a test
2 i# l0 z/ d% V7 Hvoltage of 500 V r.m.s. for 1 min.
. W8 \: h# K/ \/ q8 G# _4 a1 J6 X– For luminaires which are other than ordinary the nominal voltage (under load and under' j/ ^. r5 y; G$ F0 W! k
no load) does not exceed 12 V r.m.s. or 30 V ripple-free d.c.. When the luminaire is
2 W& d% `* j4 C. gopened for light source replacement, the voltage limits for ordinary luminaires are/ i$ ^( }$ O& }$ g
applicable (for parts only accessible during maintenance). |
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