Hubbell SVN Series Installation Instructions

POLYMER-HOUSED ARRESTERS
SVN/SVNH/SVNX/SVNR & PH3/PH4 - SERIES
Installation Instructions: 17-5155
The equipment covered by these instructions should be installed and serviced only by competent personnel familiar with
good safety practices. This instruction is written for such personnel and is not intended as a substitute for adequate training
and experience in safe procedures.
Prior to installing this product, check the nameplate information to verify that it is the correct product for the
application. Verify that the nameplate information corresponds to the information provided on the outline drawing.
Introduction
Hubbell Power Systems surge arresters are designed to limit
surge voltage by conducting the surge current to ground, and
thus avoiding equipment damage. The arresters are of single pole
design, suitable for outdoor use, and designed in accordance with
the latest revision of industry standard IEEE C62.11 and/or IEC
60099-4.
Each SVN, SVNH, SVNX, SVNR, PH3, and PH4 arrester contains
a number of vertically stacked zinc oxide valve elements
permanently sealed in a hollow housing(s) consisting of a
fiberglass filament wound tube covered by silicone rubber
weathersheds. Each housing is provided with a means of pressure
relief in the remote event of an arrester failure. Metal end fittings,
attached to the housing, provide a means for bolting the arrester
units together and to a foundation.
An outline drawing is included with every arrester and should be
reviewed for details. Three arresters are required for three-phase
installations. Smaller, lower rated arresters are shipped as a single
assembled unit, while larger, high rated arrester models consist of
two to four individually assembled units that must be stacked and
bolted together in the field.
Application
! WARNING
Hubbell Arresters must be applied where the continuous
phase-to-ground voltage at the arrester location does
not exceed the arrester continuous voltage capability
as indicated on the nameplate. Arrester physical size
may not determine the voltage rating. Do not install
arrester If type, rated voltage (Ur for IEC arresters) and
maximum continuous operating voltage (Uc for IEC
arresters) are not exactly the same on the nameplate
and packaging labels.
Packaging
SVN, PH3, and PH4 arresters: Arrester units are shipped
horizontally in wooden crates. Arresters are packaged in individual
crates up to three units. If an arrester consists of more than three
units, it will ship in multiple crates. The suspension cap, terminal
hardware and unit mounting hardware are shipped unattached to
the arrester and will be contained in the arrester crate.
! CAUTION
! WARNING
SVNH, SVNX and SVNR arresters: Arrester units are shipped
vertically, with multiple units bolted to a pallet and crated.
Arresters are packaged in individual crates up to four units. If an
arrester consists of more than four units, it will ship in multiple
crates. Terminal hardware items are shipped unattached to the
arrester and will be contained within the arrester crate.
Grading and corona rings: Grading rings and corona rings (where
applicable) are shipped separately, strapped to a wooden pallet or
packed in a fully enclosed wooden crate.
Initial Inspection
Rough handling can result in damage to the surge arrester.
Arresters should be carefully removed from the crate for
inspection. If damage is apparent, do not install the arrester.
Claims for shipping damage should be registered immediately
with the common carrier.
The arrester model number, rated voltage (Ur for IEC arresters),
MCOV (Uc for IEC arresters), serial number and other pertinent
information are identified on the arrester nameplate. Multi-unit
arresters included individual unit nameplates to identify each unit
rated voltage. The arrester nameplate will additionally include the
appropriate stacking order for multi-unit arresters.
The nameplate information should be checked against the
shipping memorandum.
Styrofoam plugs are installed in SVN, PH3 and PH4 series arrester
pressure relief vents. These plugs are included to discourage
nesting by small birds and animals. The plugs should be left in
place.
Installation Location
Install the arrester electrically as close as practicable to the
equipment to be protected. Keep the arrester connections short
and direct. The footings of all outdoor piers or supports should
extend below the frost line and be elevated above the ground line
sufficiently to meet personnel safety requirements.
Altitude and Temperature
All Hubbell polymer housed arresters covered by these
instructions can be used from 0 to 12,000 feet (3600m) altitude.
These arresters can be used in locations where the maximum
temperature does not exceed 60° C and where the weighted
average temperature does not exceed 45° C. The minimum
operating temperature is -40° C.
SVN/SVNH/SVNX/SVNR & PH3/PH4 Series - Rev 05/2020