WEBVTT

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Certificate specific
loss times core mass

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is only a starting point.

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Sheet tests do not
reproduce production

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joints and
assembled clamping.

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At corners, flux
crosses gaps and

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transfers between
laminations.

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At a three-phase T-joint,

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its direction changes.

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Cutting and clamping
also change the

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stress state.

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A building factor
connects material

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performance to
the finished core.

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The article gives
about one point

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one to one point three for

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three-phase step-lap cores,

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depending on design
and manufacture.

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It is not a
universal constant.

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Compare quotations
using material grade,

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thickness, the named
loss-test method,

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and the building
factor with its

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basis.

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Then compare
calculated loss at the

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design flux density.