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| DSH 386' U- a9 l3 @/ a! Z+ ]1 p
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| Overload of Transformers
- F% y- \- ~; _% } | 5.4.3 (5.3.3) and App. C1; J4 a: w3 O( ]
| 60950(ed.2) & 60950(ed.3)
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Standard:+ O. x, H/ J1 i" V
IEC60950, 2nd (3rd) edition
- A7 c: O- _4 E& C7 v( {/ U- p! O. WSub clause:
! c: u- k3 W1 t7 f1 n/ C' Z5.4.3(5.3.3) and App. C1: c% X1 q% x) f& v; w
Sheet n. 386
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, b, S# w/ s" H) ?2 U+ w8 vSubject:+ w @1 w# F+ H- ]0 k1 h# R
Overload of Transformers
" y/ U- f7 B1 T' QKey words:
5 F7 G4 {3 U+ a' d/ h% p; Y" E-Transformers! s5 a% l( B) _3 B4 _: [
-Overload8 n# [6 }) d& c: X/ d1 {
Decision confirmed
0 Q0 F' U: m$ r B z$ sat CTL 38th meeting" J/ l4 a9 L3 |4 o
Question:
& y5 }) J# Z B. ^0 K7 `How do you perform the overload test on a transformer used in a switched mode power" j: R2 V' W; s
supply? Do you agree with the following procedure?6 \7 Y0 I5 B( K8 i
A power supply output-circuit shall be loaded with the worst normal load while overloading; C! M* V7 b: q
that secondary winding which supplies the output-circuit.
0 F5 y+ j9 g- S; [, W2 l% y/ TDecision:1 E3 S& v6 T$ ~# X3 {1 c4 U* G# {
The load condition at the output of the switched mode power supply which causes the
6 W+ l/ L* ]$ u3 pgreatest heating effect shall be used. The load is not likely to be a short circuit
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