7
Installation procedure
INSTALLATION AND OPERATION INSTRUCTIONS
MN280103EN March 2023 www.eaton.com
Installation procedure
WARNING
THIS EQUIPMENT IS NOT INTENDED TO PROTECT HUMAN LIFE.
FOLLOW ALL LOCALLY APPROVED PROCEDURES AND SAFETY
PRACTICES WHEN INSTALLING OR OPERATING THIS EQUIPMENT.
FAILURE TO COMPLY CAN RESULT IN DEATH, SEVERE PERSONAL
INJURY, AND EQUIPMENT DAMAGE.
WARNING
HAZARDOUS VOLTAGE. ALWAYS USE A HOTSTICK WHEN
WORKING WITH THIS EQUIPMENT. FAILURE TO DO SO COULD
RESULT IN CONTACT WITH HIGH VOLTAGE, WHICH WILL CAUSE
DEATH OR SEVERE PERSONAL INJURY.
All reclosers are carefully tested and adjusted at the factory
to operate according to published data. Well-equipped test
facilities, detailed testing procedures, and thoroughly trained
personnel assure accurately calibrated equipment. Each
recloser leaves the factory ready for installation—pending
completion of the steps in this procedure.
The NOVA NX-STS reclosers are shipped palletized (bolted
onto a pallet). Also, a pair of disposable shipping legs will
be installed onto each side of a recloser at the factory when
shipped standalone (i.e., not pre-installed in a pole frame).
A label is displayed on each shipping leg to notify the user
to remove and discard before installation. When moving
with a fork truck/lift, the recloser must remain bolted to the
pallet to avoid damage.
Eaton recommends transporting NOVA NX-STS reclosers
in the closed position to maximize the operational
performance of the unit.
Figure 5 . NOVA NX-STS recloser data plate
1.
Check the data plate ratings. Make sure the ratings on
each recloser data plate (see
are correct for
the planned installation.
2.
Prior to installing the NOVA NX-STS recloser, perform
high-potential withstand tests. Refer to the High-
Potential Withstand Tests section on page 17 for
high-potential withstand test procedures. This test
will help identify any shipping damage affecting the
dielectric condition of the recloser or the vacuum
integrity of the interrupter.
WARNING
FALLING EQUIPMENT. USE THE LIFTING LUGS PROVIDED AND
FOLLOW ALL LOCALLY APPROVED SAFETY PRACTICES WHEN
LIFTING AND MOUNTING THE EQUIPMENT. LIFT THE UNIT
SMOOTHLY AND DO NOT ALLOW THE UNIT TO SHIFT. IMPROPER
LIFTING CAN RESULT IN SEVERE PERSONAL INJURY, DEATH,
AND/OR EQUIPMENT DAMAGE.
CAUTION
PERSONAL INJURY. SHEDS ON EPOXY ENCAPSULATION HAVE
SHARP EDGES. WEAR PROTECTIVE GLOVES WHEN HANDLING THE
UNIT. FAILURE TO DO SO CAN RESULT IN CUTS AND ABRASIONS.
3.
Mount the reclosers. Use the lifting lugs located on the
head casting and/or on the frame, and follow approved
through
for lifting lug
locations. The recommended nominal lift strap length
is approximately 50 inches for use when the recloser is
installed in a pole frame or standalone recloser only.
NOTICE
THE DEFAULT CONNECTIONS USE THE HORIZONTAL BUSHING AS
THE SOURCE SIDE AND THE VERTICAL BUSHING AS THE LOAD
SIDE. ALSO, THE HORIZONTAL BUSHING MAY BE USED AS THE
LOAD SIDE AND THE VERTICAL BUSHING AS THE SOURCE SIDE.
NOTE THAT REVERSING THE SOURCE AND LOAD BUSHINGS HAS
NO EFFECT ON OVERCURRENT PROTECTION BUT MAY REQUIRE
SETTINGS OR WIRING CHANGES TO THE CONTROL FOR CORRECT
METERING.
IF EQUIPPED WITH SOURCE VOLTAGE SENSORS ONLY, THEN THE
HORIZONTAL BUSHINGS MUST BE CONNECTED TO THE SOURCE.
THE SOURCE VOLTAGE SENSORS CANNOT MONITOR SOURCE-SIDE
VOLTAGE WHEN THE NOVA NX-STS RECLOSER IS IN THE OPEN
POSITION IF THE HORIZONTAL BUSHINGS ARE CONNECTED TO
THE LOAD. TO MONITOR SOURCE AND LOAD-SIDE VOLTAGES,
ENSURE THE RECLOSER IS EQUIPPED WITH THE SOURCE AND
LOAD-SIDE VOLTAGE SENSING ACCESSORY.
WARNING
HAZARDOUS VOLTAGE. IF TERMINAL CONNECTIONS ARE
REVERSED, VOLTAGE SENSING MAY INDICATE ERRONEOUS
VOLTAGES WHEN THE CONTACTS ARE OPEN. DO NOT RELY ON
VOLTAGE SENSING TO ENSURE THAT THE VOLTAGE IS ZERO AND
THE LINE HAS BEEN DE-ENERGIZED. ALWAYS FOLLOW PROPER
SAFETY PRACTICES AND USE A SEPARATE DETECTION METHOD
TO VERIFY A DE-ENERGIZED CONDITION. FAILURE TO DO SO CAN
RESULT IN CONTACT WITH HIGH VOLTAGE, WHICH WILL CAUSE
DEATH OR SEVERE PERSONAL INJURY.
