|
|
" y) }1 N) z, \5 z0 m6 w. |. j
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。
$ P. S, g) H! o @! }0 Q$ X) rNote: The open circuit voltage between secondary terminals of a two-secondary winding transformer may exceed 42.4 V
) V7 J2 n; o @6 B* _* c7 r9 fpeak when secondary terminals are interconnected, if the following conditions are met:
' b: K8 @1 g6 a4 a8 `9 W/ ~* Ja) The open circuit voltage between any two terminals is not more than 42.4 V peak when no connections( |& q9 w7 m/ C+ p* S6 o# v) r
are made between secondary terminals and, r+ K- Z# Q; ]6 |' d5 y5 c& W
b) The transformer is marked in accordance with Clause 17.4.2
8 v; k7 L+ f3 F- T
: ^7 D* E$ R; `; D: f17.4.2 A transformer with multiple secondary windings as described in Clause 4.3 having an output$ U' j! A2 v s9 g5 s0 `
exceeding 30 V rms or 42.4 V peak, or a transformer with an output current exceeding the limit specified( p$ }5 D* T6 R- B. E/ Q; j9 d
in Clause 28.1.1 or Clause 28.3.1, shall be marked where readily visible after installation, with the word2 ~' ~. @2 T4 n3 f
″WARNING″ and the following or the equivalent: ″Risk of electric shock or fire, do not interconnect/ g4 _. D0 k1 C D4 J
secondary windings.″ The word ″WARNING″ shall be in letters not less than 3.2 mm (0.125 in) high. The
6 \( R4 Q X" Q. c' `# V: e* mremaining letters shall be not less than 1.6 mm (0.063 in) high. |
|
/2 
|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