ABB Inc.
Instruction Booklet Distribution Transformers
Jefferson City, MO
ISO 9001 Certified
I.B. 46-060-1, Section E
ILUJ000004-BLE
Effective: January, 2008
Instructions for Secondary
Unit Substation Transformers
150-3000 KVA, Three Phase
1.0 INTRODUCTION
These instructions apply to liquid filled secondary unit
substation transformers manufactured by the ABB
Transformer Facility at Jefferson City, Missouri.
Secondary Unit Substations are typically composed of
three (3) major sections: the high or medium voltage
section; transformer section; and low voltage section.
These sections can be close coupled whereby the sections
are bolted directly together to form a single line of electrical
equipment or the sections can be separated by distance
and connected by conduits or electrical buss work. These
instructions only apply to the transformer section. Please
refer to instruction books for adjoining sections where
applicable.
The transformers described herein are designed for the
conditions normally encountered on electric utility power
distribution systems. As such, they are suitable for use
under the “usual service conditions” described in ANSI
C57.12.00 (General Requirements for Liquid-Immersed
Distribution, Power and Regulating Transformers). All other
conditions are considered unusual service and should be
avoided.
2.0 SAFETY
WARNING:
READ THIS INSTRUCTION BOOK
CAREFULLY
BEFORE
ATTEMPTING
TO
INSTALL, MAINTAIN, OPERATE OR SERVICE
THE TRANSFORMER. FAILURE TO FOLLOW
INSTRUCTIONS CAN CAUSE SEVERE INJURY,
DEATH, OR PROPERTY DAMAGE.
Keep this Instruction Book available to those responsible
for the installation, maintenance, operation, and service of
the transformer. Safety as defined in this Instruction Book
involves two conditions:
Personal injury.
1
Product or property damage.
2
SEE IMPORTANT “DISCLAIMER OF WARRANTIES AND
LIMITATION OF LIABILITY” ON PAGE 8.
Safety notations, intended to alert personnel of possible
personal injury, death or property damage, have been
inserted in the instructional text prior to the step in which
the condition is cited. These safety notations are headed by
one of three intensity levels which are defined as follows:
DANGER
1
– Immediate hazard which
will
cause severe personal injury, death, or
substantial property damage.
WARNING
2
– Hazard or unsafe practice
which
can
cause severe personal injury, death or
substantial property damage.
CAUTION
3
– Hazard or unsafe practice
which will or can cause minor personal injury or
minor property damage.
The transformer should be operated and serviced only by
competent personnel, familiar with good safety practices.
These instructions are written for such personnel and are
not intended as a substitute for adequate training and
experience in the use of this equipment. Should clarification
or further information be required, or should problems arise
which are not covered sufficiently for the user’s purpose,
refer the matter to ABB Inc. When communicating with ABB
regarding the product covered by this Instruction Book,
