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1 Z4 a3 H& a8 c' N- s8 _
( Q5 P8 I- `1 X8 O. l | Mains Transformers3 |2 [. h& Q3 Y4 e5 ?6 J
| 14.7
$ |( n1 H" T1 L9 c | 61010-1(ed.1);am1;am2
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3 t. m. [1 o: `: C' r8 k8 g- R
6 O6 r% t! V3 {1 e, r2 hStandard:1 N6 l' ?4 x4 S# n6 K
IEC 61010-
9 N* y+ n' W% }7 E( w/ f: U1:1990+A1:1992+A2:1995, E5 }1 r+ ^) t$ L
Sub clause:5 Z: E; r$ q7 W0 ]/ T
14.7
, _$ a4 I2 a3 e; `+ i/ G3 |% bSheet n. 314
9 i; d0 f2 K+ ~Page 1(1)
- O1 e3 n7 @/ s1 A: oSubject:
" C! q" ~. ^$ X- L; OMains transformers- w" L% X$ ^8 P5 C8 M* f
Key words:
* M9 }& P1 k' ~- M. j x+ i- Isolation# ^8 }6 y/ p( f# G
- Transformer# h9 j3 n$ z/ W% Z# a
Decision taken by: L6 k1 d4 h) H, P& i$ j$ x
ETF3 and confirmed
1 j, y P* M& ]4 c- M# [5 \by CTL at its 38th% L$ H$ X- ?0 p8 \0 n8 G
meeting, in Toronto
; Q% \0 v# ^9 w! L* H5 mQuestion:
# B( U8 c- C2 u, E* lWhat isolation and loading requirements are applied to auto transformers?
2 S/ A3 s: T% \; O8 s, V1 C9 oDecision% T- W) z0 P' z- P0 G% q
Tests for loading are applied when applicable as for isolation transformers. No isolation& n- f' j4 k( T2 ]' G7 \
requirements are applied between voltage outlets, however, care must be taken to ensure that
- {( Q. A. _( pcircuits separated by voltages are suitably isolated form one another to prevent short circuit2 u. q2 i5 n; p
of the intervening winding.8 q! o# v$ M+ ~; R& i1 r
Explanation
* z( K6 L) a) `% b& Z: WAuto transformers are subject to overheating tests in the same way as isolating transformers,( l1 u2 G6 z# v
however, they are not designed to provide isolation and these requirements are, therefore, not9 S5 ?9 x3 _6 e/ S" m
applicable as there is direct connection between circuits.
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发表于 2012-9-19 14:40
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