Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Uživatelský manuál stáhnout pdf (Strana 19)

The chassis units do not have to be earth grounded. If you

choose to ground the chassis, use a star washer beneath the

head of at least one of the mounting screws to penetrate the

anodized chassis surface and to reach bare metal.

Isolation transformer

11Installation

ATTENTION: Distribution system capacity above the

maximum recommended system KVA requires the use

of an isolation transformer, a line reactor, or other

means of adding similar impedance to the drive power

input. Failure to observe these precautions could result

in damage to, or destruction of, the equipment



Input isolation transformers might be needed to help

eliminate the following:

· Damaging line voltage transients from reaching the

drive.

· Line noise from the drive back to the incoming power

source.

· Damaging currents that could develop if a point inside

the drive becomes grounded.

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Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Uživatelský manuál Strana 19