WEBVTT

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More tightening is
not always better

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for a transformer core.

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Too little restraint
allows laminations and

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joints to move.

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Too much pressure,

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or uneven pressure,

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can bend sheets and
introduce harmful

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stress.

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The useful range
comes from the

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core design.

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There is no universal
clamping pressure

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for every core.

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The frame and
pressure plates must

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spread the load
across the packet.

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Apply the specified
bolt torque or

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band tension in the
defined sequence,

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and keep the record.

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Protect the insulation
and cut edges

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during assembly.

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Recheck where the
design and process

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require it.

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The aim is repeatable,

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controlled clamping,
verified on the

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finished core.