Howard Small Power - Manual (Page 14)

Document 2.4.54 Revision 0
July 2006 Small Power Substation Transformers
14
High-Voltage Bushings
High-voltage bushings are typically shipped installed in
the unit. If the bushings were removed for shipment,
install the bushings per the manufacturer’s guidelines.
!
WARNING: DO NOT EXCEED THE
CANTILEVER LOAD RATING OF THE
BUSHING. GREATER LOADS MAY CAUSE BUSHING
DAMAGE THAT COULD RESULT IN SEVERE
PERSONAL INJURY, DEATH, OR PROPERTY
DAMAGE.
Draw-lead bushings usually require no maintenance
except as described on page 15. Maintenance
instructions for condenser-type bushings are furnished
with the bushings.
Low-Voltage Bushings
Low-voltage bushings are typically shipped installed in
the unit. If the bushings were removed for shipment,
install the bushings per the manufacturer’s guidelines.
Surge Arresters
Transformers may be furnished with optional
distribution class, intermediate class, or station
class surge arresters. Intermediate and station class
arresters are shipped separately from the transformer
to prevent damage. Upon delivery, unpack the arresters
and carefully inspect them for damage, especially the
porcelain components. Install surge arresters according
to the instructions found on page 9.
Radiators
Transformers are furnished with radiator assemblies
(usually panel type) to dissipate heat from the
transformer. Cooling fans may also be furnished
to provide additional loading capability without
overheating the transformer. Radiator assemblies may
be shipped separately from the transformer to reduce
the shipping size of the transformer and to prevent
damage. When radiators are shipped unattached,
they should be installed in the field according to the
instructions on page 8.