Howard HI-104 Single-Phase Pad Transformer - Manual (Page 6)

Document 2.4.96, Revision 0
March, 2013
6
Single-Phase Pad-Mounted Compartmental-Type Distribution Transformers
Drawings and Documents
Locate all shipping papers, packing lists,
specifications, and other pertinent information for
use during inspection. Verify that the transformer is
supplied with a nameplate, required warning labels,
and terminal designation markings. Verify that the
terminal designation markings are consistent with
those on the nameplate. The transformer nameplate
provides electrical characteristics, winding
connections, and weights. The transformer wiring
diagram provides details of any control, fan and
alarm wiring that may have been provided.
Lifting and Handling
Lifting lugs or bosses are provided to lift the
completely assembled transformer. All lifting lugs
or bosses must be used simultaneously to provide
a safe, balanced lift. The transformer must not be
lifted from any points other than the provided lifting
lugs or bosses. Do not use holes in the lifting hooks
for lifting. These holes are for tie-down purposes
only and are not suitable for lifting. Refer to the
transformer nameplate to determine the total weight
of the assembled transformer.
Lifting bosses, when provided, consist of 5/8”-11
threaded inserts. Lifting should be accomplished
with user-installed 5/8”-11 lifting bolts that have
been fully engaged into the threaded bosses and
hoist rings. Do not lift with lifting bolts alone. Lifting
bolts and hoist rings must be rated to safely support
the weight of the completely assembled transformer.
A spreader bar should be used to keep the lifting
cables or straps nearly vertical, enabling a safe lift
and reducing the likelihood of tank deformation or
damage to painted surfaces. Transformers should be
lifted in an upright position, allowing the transformer
to tilt no more than 15 degrees from vertical. Lifting
cables or straps should be no more than 20 degrees
from vertical.
Single-door style transformers may also be lifted with
a forklift truck of adequate lifting capacity to safely
handle the weight of the completely assembled
transformer. Forks should be of sufficient length to
extend completely through the shipping pallet or
runners. Transformers should be lifted with the tank
(core/coil and fluid compartment) oriented toward
the forklift truck, so that the transformer center of
gravity is adequately supported. Lifting transformers
from the terminal compartment side is not safe, as
the transformer may tip and fall.
Lifting double-door style transformers with a forklift
truck is not recommended, since weight and balance
can be problematic, and radiator panels can be
easily damaged.
Transformers should be handled with special care
when the ambient temperature is below minus 20°C
(minus 4°F); otherwise, permanent damage to the
transformer may result.
▲
! WARNING
FAILURE TO FOLLOW THE INSTRUCTIONS
BELOW COULD RESULT IN DEATH OR SERIOUS
PERSONAL INJURY, AND COULD ALSO RESULT
IN DAMAGE TO THE EQUIPMENT.
• Lifting equipment, including forklift trucks,
cranes, hoists, cables, straps, lifting bolts,
hoist rings and spreader bars, must be of
adequate capacity to safely lift the completely
assembled transformer.
• Keep unnecessary personnel clear while
unloading and moving the transformer.
Initial Inspection
Although all transformers, components, and
accessories are carefully inspected and tested prior
to shipment from the factory, a thorough receiving
inspection should be conducted to detect any
damage or loss that might have occurred during
shipment. The receiving inspection should be
completed upon receipt and before unloading from
the truck. Note any damage or discrepancies on the
bill of lading, file a claim with the carrier, and notify
the Howard Industries Transformer Division prior to
unloading the transformer and before attempting any
repair.
SECTION 2: RECEIVING, HANDLING, AND STORAGE