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Product information
Introduction
Eaton’s Cooper Power series 100 A externally operated
single-, two-, and three-phase Tap-Changer Switches
are designed for use in distribution transformers filled
with transformer oil, Envirotemp™ FR3™ fluid, or an
approved equivalent. They are designed for use in pole
or pad-mounted transformers. The switches are used to
regulate induced voltage of the primary and to maintain
constant secondary voltages.
Read this manual first
Read and understand the contents of this manual and follow
all locally approved procedures and safety practices before
installing or operating this equipment.
Additional information
These instructions cannot cover all details or variations
in the equipment, procedures, or process described nor
provide directions for meeting every possible contingency
during installation, operation, or maintenance. For additional
information, contact your Eaton Representative.
Acceptance and initial inspection
Each tap-changer switch is in good condition when
accepted by the carrier for shipment. Upon receipt, inspect
the shipping container for signs of damage. Unpack the
tap-changer switch and inspect it thoroughly for damage
incurred during shipment. If damage is discovered, file a
claim with the carrier immediately.
Handling and storage
Be careful during handling and storage of the tap-changer
switch to minimize the possibility of damage. If the switch
is to be stored for any length of time prior to installation,
provide a clean, dry storage area.
Standards
ISO 9001 Certified Quality Management System.
General mounting description
Table 1 . Dielectric clearance dimensions
kV BIL
Minimum mounting clearance
under-oil to Gnd/ between phases/
and depth below top level
95
1.1”
125
1.5”
150
2.0”
Torque requirements
To Seal - 80-120 inch pounds.
Clearance
Mechanical - External handle clear of obstructions. When
the lever handle with index plate is used, flattening for the
gasket sealing surface must not exceed a depth of .25”.
Mechanical strength
Designed to support leads sized per rating of switch.
Standard dielectric dimensions for lead separation should
be followed. Connection of leads can be made either to
bolt tabs or crimped into connectors (if supplied). Special
stationary contact with crimp barrels are available for
#16-14, #12-10, and #8 copper wires. Bolt tab designed to
accept 1/4”-20 bolt and ring tongue terminals through #4.
A larger terminal may be used if the terminal amperage
rating corresponds with the switch rating.
CAUTION
Equipment Damage . Caution should be used in
lead training [dressing] to avoid lead forces of over
60 pounds on the switch in any direction . Anticipate
thermal expansion and contraction as well as
mechanical stresses from transportation, which will
vary by application . Misuse of lead training could result
in equipment damage .
Electrical ratings
Impulse withstand
150 kV BIL
60 Hz 1 minute withstand
50 kV
Continuous current
100 A rms
1
INSTALLATION INSTRUCTIONS
MN800014EN February 2017
100 A tap-changer switch cap/wrench, lever or hotstick operable handles installation instructions