Instruction Manual

Document 2.4.96, Revision 0
March, 2013
8
Single-Phase Pad-Mounted Compartmental-Type Distribution Transformers
▲
! WARNING
FAILURE TO FOLLOW THE INSTRUCTIONS
BELOW COULD RESULT IN DEATH OR SERIOUS
PERSONAL INJURY, AND COULD ALSO RESULT
IN DAMAGE TO THE EQUIPMENT.
• Do not energize the transformer if the uid
level is low.
• Maintain proper uid level at all times while
the transformer is energized.
• Exercise caution when checking the uid level
with the uid level plug, as the uid may spill
and may be extremely hot.
Internal Inspection
An internal inspection of the transformer tank is
rarely necessary and is recommended only when
there are obvious indications that the transformer
has received severe impact damage during transit
or when necessary to perform recommended pre-
energization tests or inspections. Do not open
the transformer tank without authorization from
the Howard Industries Transformer Division. If the
transformer tank must be opened, refer to “Opening
the Transformer Tank” for instructions.
Fluid Sampling
Sampling and testing of the uid is not required
unless there is indication that moisture or other
contaminants have accidently entered the tank
during transit. If moisture or contaminants in the
uid is suspected, contact the Howard Industries
Transformer Division immediately for instructions.
If uid sampling is required, refer to “Sampling the
Fluid” for instructions.
Transformer Storage
Transformers may be temporarily stored if properly
prepared. It is recommended that transformers
be stored completely assembled. Prior to storage,
transformers should be thoroughly inspected as
described above in the “Initial Inspection” section.
If the transformer is not completely assembled,
separate components and accessories should be
stored in a clean dry area in their original shipping
containers. Do not store the transformer in a
corrosive environment.
Transformers should be stored on a rm level
surface. They may also be stored in racks designed
for that purpose. Transformers should not be stacked
directly on top of one another, as this may damage
the paint nish and cause cabinet misalignment.
It is recommended that the transformer be inspected
periodically while it is in extended storage. Ensure
that an effective pressure seal is maintained, and
check for leaks and corrosion. Any damage or
defects should be repaired immediately.