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% u& h* x3 W( k0 e; l | Mains Transformers
, ^8 Q$ X4 E" B2 y | 14.7
7 M9 Q0 l& C0 S- ^ | 61010-1(ed.1);am1;am2
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Standard:
8 ^% M. v# b* R1 l% _IEC 61010-
7 T+ S1 p3 ]8 H* n |/ q1:1990+A1:1992+A2:1995
" s# i2 v- V, z' v! y2 z& I, ?8 I' CSub clause:! O7 g1 H6 j4 l2 \% @
14.7: L$ ]& M2 m! a# h- x! ?0 c
Sheet n. 3269 g" s, J6 ?. u% j4 a
Page 1(1)' ]9 Z% u* m" c/ Y @. L3 Z
Subject:9 }3 U) ?; N% S
Mains transformers
% G6 g5 O% B& O* u/ \% G2 W/ yKey words:& h% U: G- \" D5 |% T0 @4 C# H
- Temperature
" l0 i+ ^: C0 Z8 |# E9 s" i- Melting
: e# e% l0 G* o& z/ r- Limits. G( K8 q. r* X) x$ c& q1 M
Decision taken by; t! q2 e2 @( G# t& i
ETF3 and confirmed* R; H3 z8 n1 d' V# ~0 o
by CTL at its 38th
B2 T* M; S$ Q# omeeting, in Toronto
. W% K2 U5 J- z0 O- N7 a" |1 Y5 V$ `" ]Question:( H4 I) x1 L+ d& Z2 q- _6 o p
What temperature limits should be applied in single fault condition?% s; ^1 U6 ~+ U4 @2 g, D' l
Decision:
3 B' P, f3 T' T, J6 \7 u! J1 b8 LRefer to Table4 of IEC61010-1 ‘Motor temperature’.- U; Y! H: J, i5 ^! R G2 {
Note: Where melting of insulation occurs this is not significant where it does not cause a
+ F/ k4 Z- S( l7 c% R( t6 Chazard.
4 Y D" Y7 \3 M/ G# b- PExplanation:
, n' r# S+ i f9 M& `1 OTable 4 is to be amended to include transformers in its application in the next edition and a
2 K6 K! a2 W: a! q; p* Ttext change included referring to hazards when insulation melts.
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