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V1,V2满足有效值30V，峰值42.4V，但互联后，V3，V4就有效值和峰值都超了。（不互联 就V3 V4也不超），看到27后面有一行，就以为是可以豁免这种V3，V4互联超限值情况。
& m* A: \+ }' W2 I! }Note: The open circuit voltage between secondary terminals of a two-secondary winding transformer may exceed 42.4 V
6 Q+ N3 B8 g9 Opeak when secondary terminals are interconnected, if the following conditions are met:6 |1 d" |$ z$ E4 [$ |
a) The open circuit voltage between any two terminals is not more than 42.4 V peak when no connections
- M$ l/ d" G! |: K9 d7 m' Uare made between secondary terminals and, z( W3 ^& E' R& g: o
b) The transformer is marked in accordance with Clause 17.4.2
# n, {# I; P; Q+ h* y
9 Z+ e& {* u2 ^! V/ I; @17.4.2 A transformer with multiple secondary windings as described in Clause 4.3 having an output
) c9 M* u# E0 Q8 Zexceeding 30 V rms or 42.4 V peak, or a transformer with an output current exceeding the limit specified
/ Z! L' _7 @6 [2 A( Gin Clause 28.1.1 or Clause 28.3.1, shall be marked where readily visible after installation, with the word1 d9 x# M' q+ n e# D8 p1 H' z
″WARNING″ and the following or the equivalent: ″Risk of electric shock or fire, do not interconnect- A8 E! K" e9 }- K6 ]. i/ N4 Y
secondary windings.″ The word ″WARNING″ shall be in letters not less than 3.2 mm (0.125 in) high. The: }* |2 A( I. ~) k3 G
remaining letters shall be not less than 1.6 mm (0.063 in) high. |
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发表于 2024-8-14 09:54
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