Emerson Drive Isolation Transformers User Manual

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Operation & Maintenance Recommendations
for Low Voltage General Purpose
Ventilated & Encapsulated transformers
Receiving:
Inspect for external damage during shipment.
Remove covers and panels to inspect for any
damage to internal parts.
Handling:
Ventilated enclosures are designed to be fork or sling
lifted, with enclosure panels in place. Lifting ears are
provided on larger encapsulated units.
Installation and V entilation:
Select a location complying with all local and national
safety codes, that will not interfere with the normal
movement of people, trucks, equipment and material.
A dent in the enclosure may reduce the insulation
clearances to an unsafe level. Remove shipping bolts
and braces when provided. Ventilated units require
minimum 6” clearance on sides and top. Mount
encapsulated units only on vertical surfaces.
V entilated Unit Grounding:
Grounding is necessary for safety . Make certain the
grounding jumper between the core/coil assembly
and case is intact, or that the core/coil assembly is
directly grounded from the core clamp through the
flexible lead. Ensure the grounding or bonding meets
the N.E.C. and local codes.
Connections:
Conduit should enter through the conduit access
area only . Refer to the wiring diagram for correct line
and tap connections. Before changing taps on
ventilated units, scrape protective varnish from tap
terminals to expose bare metal. Replace hardware in
the same order it was removed with flat and spring
washers. Make sure all connections are tight.
Ventilated
Encapsulated
P/N 985555
CAUTION
Installation and
maintenance
should be
performed only by
qualified personnel.
De-energize the
transformer before
performing any
maintenance or
service work.
CAUTION
Never lift from or
apply force to coils,
terminals or
terminal boards.
CAUTION
Always
permanently and
adequately ground
the transformer
case.
CAUTION
Never make
connections while
the transformer
is energized.