IEC 62044-3:2000/COR1:2021

 IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

____________
IEC 62044-3 IEC 62044-3
Edition 1.0  2000-12 Édition 1.0  2000-12

CORES MADE OF SOFT MAGNETIC MATERIALS NOYAUX EN MATÉRIAUX MAGNÉTIQUES DOUX –

– MEASURING METHODS –  MÉTHODES DE MESURE –

Part 3: Magnetic properties at high Partie 3: Propriétés magnétiques à niveau
excitation level élevé d'excitation

CO RRI G E NDUM 1
Corrections to the French version appear after the English text.
Les corrections à la version française sont données après le texte anglais.

6.3.2.2 Multiplying methods
Replace Table 1 with the following new table:
Domain of
Subclause of
Measuring method
useable excitation
Annex C
acquisition processing
waveform
V-A-W meter Sinusoidal Time Time C.4
Impedance analyser Sinusoidal Not applicable Not applicable C.5
Digitizing Arbitrary Time Time C.6
Vector spectrum Arbitrary Frequency Frequency C.7
Cross-power Arbitrary Time Frequency C.8

B.4 Measuring procedure
Replace the formula and text with the following new formula and text:
UU−
P= ui×=
( )
N
4⋅ ⋅R
N
where
(u×i) is the time-averaged product of the instantaneous values of voltage induced by the
excitation in the measuring coil assembled with the core and the current through the
exciting winding;
IEC 62044-3:2000-12/COR1:2021-10(en-fr)

– 2 – IEC 62044-3:2000/COR1 :2021

 IEC
U is the r.m.s. value of the sum of the voltages across the measuring winding
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