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8 n& H/ ?+ B+ R2 w6 \) {0 l3 P) ~6 l8 P, i+ D" z2 T1 F S/ n
| Mains Transformers) j# v7 n: N# w* @
| 14.7+ c5 l2 e0 d/ y
| 61010-1(ed.1);am1;am2, @& E% M- W5 u" {* Z
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+ M3 L. ]2 K$ d
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Standard:
o0 I- N; K1 O& `, y& ~- Y4 UIEC 61010-
5 q0 x; k d2 Q; p1 V* O' K8 N1:1990+A1:1992+A2:19958 B/ y+ V5 o5 A/ O; y# U
Sub clause: r# Z6 w+ c+ s" W8 f# ~9 @2 g
14.77 m& I* r; k% x# E
Sheet n. 3144 }1 L# ~2 s1 m% t9 g5 i
Page 1(1)
9 B) `+ K5 b g2 Q( m/ c% j3 |8 pSubject:
1 I: y- B! i; R$ w& }Mains transformers
[$ Q; K! S1 S0 OKey words:* }5 u1 {$ S2 t2 y
- Isolation) `1 U2 p" z" T$ X7 N
- Transformer0 `4 l, _3 p6 T& z2 V. Z% C6 l! O
Decision taken by% Q. l8 ^& `) a! ?
ETF3 and confirmed
5 `$ n$ \! W0 t5 ~% a. aby CTL at its 38th5 ]$ @6 [* L# I
meeting, in Toronto% q4 i- c. }4 U, H' q' ]
Question:
2 ^6 g9 r$ Y$ O) c0 cWhat isolation and loading requirements are applied to auto transformers?& U; Y, d! g5 ~! m
Decision5 A6 n i0 c( H
Tests for loading are applied when applicable as for isolation transformers. No isolation
7 ^. r$ ?, B2 Drequirements are applied between voltage outlets, however, care must be taken to ensure that
2 \5 y& M t$ T" _- @8 c3 ~! dcircuits separated by voltages are suitably isolated form one another to prevent short circuit
" t+ d5 K8 G& R3 X8 r, u- Nof the intervening winding.
) K% s" K1 \ T- _* } EExplanation2 \; i/ w, {& `2 K
Auto transformers are subject to overheating tests in the same way as isolating transformers,6 p6 r, w2 ^+ q5 R2 i1 S
however, they are not designed to provide isolation and these requirements are, therefore, not
% I) h) I7 p, t7 p: d a' `applicable as there is direct connection between circuits.
& s# A( H A* d& f
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