Study of Transformer Core Vibration and Noise Generation Mechanism Induced by Magnetostriction of Grain-Oriented Silicon Steel Sheet

Table 2

Modal test results of the transformer core.

Order	Experimental value (Hz)
1	8.41
2	23.61
3	65.71
4	100.86
5	175.43
6	203.6
7	299.31
8	344.62
9	400.65
10	493.95
11	570.34
12	592.06
13	705.97
14	755.49
15	802.52