To measure the magnetizing inductance (Lm) was used the
HP4262A LCR meter. The frequency in this equipment was
adjusted to 1kHz and the result obtained in this measure is
presented in (3), for the five transformers.
9.63
9.39
9.30
9.50
9.26
mi
mH
mH
L mH
mH
mH
⎧⎪
= ⎨
⎪⎩
(3)
The equivalent magnetizing inductance is the parallel
association of each individual transformer magnetizing
inductance. Thus, from the results presented in (3), the
equivalent magnetizing inductance (Lm) is equal to 1.88mH.
After this, the primary side of the transformer was
connected in the HP4284A precision LCR meter with the
secondary side opened. The frequency response of the five
transformers is presented in Fig. 5 and Fig. 6