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% n$ Y( N0 S6 |* t4 o- _
3 {# k9 |8 C' }+ l/ ? | Mains Transformers7 j# I& Q- u+ |5 r
| 14.7
0 l" I5 u+ U; s% C. |5 Y+ @ | 61010-1(ed.1);am1;am2
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1 o! {7 M- g6 l6 g" y4 s
4 u7 l( N% s9 S- n+ [( @4 I KStandard:. v& X4 R# R; ]. S ~
IEC 61010-
% {3 H6 M: x: j& {0 Q1 u, `6 Q1:1990+A1:1992+A2:1995
% I/ x/ V5 _1 Z% VSub clause:+ b; W+ f% C5 Q
14.7
3 j' ~; z% ^( f' m& s3 VSheet n. 314
+ ?( Y& v' {7 H6 Z% D$ C+ Q7 d6 z, kPage 1(1)6 \2 ?( C x9 c8 D
Subject:
% D# h7 F" H! s& \' O7 \! O% VMains transformers
) z/ a; m) Z7 lKey words:
4 ^0 Y' J8 Z- b9 v# }- Isolation
w4 ^$ u* H0 Q8 s a, A" F- Transformer& _2 o9 B7 B& j3 J1 ]- A) S% q
Decision taken by
, R# P* w" G) Z( ^' q" {' n G0 IETF3 and confirmed- b' d; X' w6 ~' q, E0 ]- |2 @
by CTL at its 38th
2 L8 o/ L" _6 }* fmeeting, in Toronto# m- i0 H# Y& I3 i$ z9 |
Question:
8 y( ^6 @! ^. a$ e. JWhat isolation and loading requirements are applied to auto transformers?
4 t( s' E6 r# u# g, VDecision/ t( x$ h0 s: `( \
Tests for loading are applied when applicable as for isolation transformers. No isolation$ Y0 ~& t9 Q( ~" S3 {1 j
requirements are applied between voltage outlets, however, care must be taken to ensure that4 A0 O2 m: R4 ?, {# n# }9 u7 c9 C
circuits separated by voltages are suitably isolated form one another to prevent short circuit- O' I$ `. l/ ]# H( _
of the intervening winding.
8 h+ q; s1 F. g7 @7 V1 dExplanation" J e& |& s) Y' i% M
Auto transformers are subject to overheating tests in the same way as isolating transformers,
' [$ M1 v1 e0 j# [' \6 @however, they are not designed to provide isolation and these requirements are, therefore, not
8 f) L! H. l7 i$ a- napplicable as there is direct connection between circuits.9 Y% s0 C+ D/ m3 Y
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发表于 2012-9-19 14:40
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