|
|
/ k5 l L1 _$ K+ x' ^: H" h0 BV1,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。; ]* b, n7 s. K) P
Note: The open circuit voltage between secondary terminals of a two-secondary winding transformer may exceed 42.4 V
N3 }: w6 w& A! `0 O) jpeak when secondary terminals are interconnected, if the following conditions are met:) O+ }: w2 d6 ^
a) The open circuit voltage between any two terminals is not more than 42.4 V peak when no connections- R- L( x( c2 `3 u7 C. B& [
are made between secondary terminals and7 G8 B& {& d: y, ~3 B! Z. Q1 _, }8 H
b) The transformer is marked in accordance with Clause 17.4.2
6 D! O! F) { b) W+ b) E4 z; `' H2 _) [" O9 {) b0 q- {4 m
17.4.2 A transformer with multiple secondary windings as described in Clause 4.3 having an output. R# B" | f+ I1 a
exceeding 30 V rms or 42.4 V peak, or a transformer with an output current exceeding the limit specified
2 B$ Y4 x0 l8 Rin Clause 28.1.1 or Clause 28.3.1, shall be marked where readily visible after installation, with the word+ S, T/ q# r5 U- n! G# L$ J% O
″WARNING″ and the following or the equivalent: ″Risk of electric shock or fire, do not interconnect
4 U( Z, a3 |9 K7 ~' ~secondary windings.″ The word ″WARNING″ shall be in letters not less than 3.2 mm (0.125 in) high. The' f7 P8 B! J8 C5 ?
remaining letters shall be not less than 1.6 mm (0.063 in) high. |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2024-8-14 09:54
显身卡