Product information
Introduction
Eaton's Cooper Power™ series four-position sectionalizing
loadbreak switch is designed for use in transformer oil,
Envirotemp™ FR3™ fluid, or an approved equivalent-filled
pad-mounted transformers or distribution switchgear. The
switches meet the full requirements of the latest revision of
both IEEE
®
and IEC standards.
Sectionalizing switches can be used on single- and three-
phase grounded wye or delta systems. They are used in
underground residential applications with loop feed, and in
three-phase commercial industrial installations where the
ability to use an alternative source of power is necessary.
They can also be used to switch on and off a primary cable
tap on a transformer.
The under-oil switch can be installed near the transformer
core/coil assembly, thus minimizing cable capacitance.
With cable capacitance minimized and all three phases
switched simultaneously, the like li hood of ferroresonance
is greatly reduced. All switches are hotstick operable (with
recommended leverage base) and available in several
different blade configurations (Refer to Table 8).
Sectionalizing loadbreak switches rotate 360° in either
direction for alternate source selection. An externally
installed limiting plate prevents ro ta tion to positions other
than the one desired. A spring-loaded activating mechanism
ensures quick loadbreak action and positive contact
engagement through all positions.
The Make-Before-Break (MBB) switches provide
uninterrupted power during switching.
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. When
additional information is desired to satisfy a problem not
covered sufficiently for the user’s purpose, please contact
your Eaton representative.
Acceptance and initial inspection
Each sectionalizing switch is inspected and tested at the
factory. It is in good condition when accepted by the carrier
for shipment. Upon receipt of a sectionalizing switch,
inspect it thoroughly for damage and loss of parts incurred
during shipment. If damage or loss is discovered, file a
claim with the carrier immediately.
Handling and storage
If the sectionalizing switch is to be stored for an appreciable
time before installation, provide a clean, dry storage area.
Quality standards
ISO 9001 Certified Quality Management System
TANK
WALL
SWITCH
OPERATING
HANDLE
Figure 1. Line illustration of sectionalizing switch with
“Ring-Mount System.”
1
SECTIONALIZING SWITCH INSTALLATION INSTRUCTIONS
MN800002EN March 2016
