WEBVTT

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Why can a large core test above

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its calculated no-load loss?

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The steel grade may be unchanged,

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but its stress state can change during

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production.

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Uneven support bends lower packets.

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Tilting redirects loads through the frame,

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limbs and yokes.

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Uneven clamping can concentrate pressure instead of

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spreading it.

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Grain-oriented steel is sensitive to these mechanical

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stresses.

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Loss and noise can rise.

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Support the full footprint on a rigid

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stacking table.

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Use a tilting fixture that supports the

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core throughout the movement.

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Check clamp-frame flatness,

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follow the specified tightening sequence,

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and record it.

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Judge the finished core with its agreed

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tests, alongside the material certificate.