5
Section
2:
Instruction
Manual
and
Drawings
*4t*4.73
Section
2:
Instruction
Manual
and
Drawings
Instruction Manual
Safety Instructions
The following are general caution and warning statements that apply to this equipment. Additional statements related to specific
tasks and procedures are located throughout this manual.
WARNING:
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CAUTION:
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SEL is a registered trademark of Schweitzer Engineering Laboratories, Inc.
WARNING:
Before installing, operating,
maintaining or testing this equipment,
carefully read and understand the contents
of this manual. Improper operation, handling
or maintenance can result in death, severe
personal injury or equipment damage.
WARNING:
Hazardous voltage. Contact
with high voltage will cause serious
personal injury or death. Follow all locally
approved safety procedures when working
around high-voltage lines and equipment.
WARNING:
Hazardous voltage. Do not
rely on the contact position indicator
to determine that the line has been
de-energized. Always establish a visible
disconnect and establish person grounds
when performing de-energized line work.
Failure to follow proper safety practices can
result in contact with high voltage, which
can cause death or severe personal injury.
WARNING:
Hazardous voltage. Recloser
and control must be solidly grounded.
Improper grounding can result in contact
with high voltage, which will cause severe
personal injury or death and equipment
damage. Disconnecting the control cable
when the recloser is energized could result
in high voltage on the pins if the recloser
tank is not grounded as specified.
WARNING:
When testing at high voltage,
the MVR and high-voltage test equipment
should be in a test cage or similar
protective area to prevent accidental
contact with the high-voltage parts. All
equipment needs to be solidly grounded.
Failure to comply can result in death,
severe personal injury and equipment
damage.
CAUTION:
All MVRs are sealed and leak
tested prior to shipment to prevent moisture
ingress. Do not open the lower cover as it is
possible that the MVR will not reseal when
the cover is closed. While the diaphragm
will keep moisture from ever entering the
high-voltage chamber, excessive moisture
ingress could cause damage to the magnetic
actuator mechanism and misoperation.
CAUTION:
Do not remove and replace
the side terminal in the field. The MVR
incorporates a unique diaphragm
technology that fully encapsulates the
high-voltage chamber in the MVR. The side
terminal must be vented during installation
and then sealed to prevent pressure
build-up against the diaphragm during the
installation process. Improper installation
may cause equipment damage and possible
personal injury.
CAUTION:
Rotating the terminal connector
without properly loosening the connector
will apply excessive force on the terminal
stud and could damage the interrupter
assembly.
CAUTION:
The complete recloser
system, including control, requires routine
inspection and maintenance if damage is
found to ensure proper operation. If it is not
maintained, it may fail to operate properly.
Improper operation may cause equipment
damage and possible personal injury.
CAUTION:
Follow approved safety
practices when lifting and mounting the
MVR. Use lifting rings on three-phase units
and lift smoothly, limiting shifting to avoid
damage. Do not lift three-phase MVRs by
the side terminals as damage could result.
CAUTION:
Do not energize the recloser for
service until all control settings have been
properly programmed and verified. Refer
to the appropriate SEL
®
control manual
for programming procedures. Failure to
comply may result in control and recloser
misoperation.
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These instructions
are not intended to cover all details or
variations in the equipment, procedures or
processes described. Nor are they designed
to 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 local
Thomas & Betts representative.
