Document No. 1014-02
Page 1
Howard Industries, Inc.
ISO-9001 Certified
Switch-Pad
™
Pad-Mounted Switching and Fusing Cabinet
Howard Industries' Switch-Pad™ is an
oil filled, pad-mounted device intended
for fusing, sectionalizing and tapping
applications on medium voltage underground electrical distribution systems.
Switch-Pad™ can be provided in a
number of different configurations
including one-, two-, or three-pole
designs and is available with numerous
switching and fusing options. Housed in
the same oil-filled enclosure used for
single-phase pad-mounted transformers,
Switch-Pad™ will blend in well with
other pad-mounted equipment in any
underground residential or commercial
system.
Ratings
Suitable for voltages from 4160Y/2400
through 34500Y/19920 (150 kV BIL) at
200 Amps continuous.
Standard Features
• Meets all applicable ANSI and NEMA
standards
• 200 Amp externally clamped bushing
wells.
• Accessory mounting bracket(s)
• Mild steel enclosure with removable
flip-up hood and detachable sill
• Stainless steel hardware including
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hinge pins/barrels, bushing mounting
studs, and sill attachment fasteners
Recessed stainless steel lifting
provisions
Oil fill/oil level plug
Oil drain plug
Tank ground provisions
Automatic pressure relief device
Electrostatically applied powder paint
finish with polyurethane top coat
Domed top surfaces of hood and oil
compartment to aid water runoff
Corrosion resistant locking assembly
with captive pentahead security bolt
and padlock provision
Decal or stenciled bushing, fuse, and
switch designations
Laser engraved anodized aluminum
nameplate
Optional Features
• Load-break high-voltage bushing
inserts (200 Amp) or externally
clamped one-piece high-voltage
bushings (200 Amp load-break or 600
Amp dead-break)
• Externally operated load-break
on/off or sectionalizing switch
• Solid stainless steel or hybrid (mild
steel/stainless steel) enclosure
• High density polyethylene protector
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strips on bottom contact surfaces to
prevent paint damage during storage
and installation
Molded polymer Pad/Pallet™ serves
as both shipping pallet and permanent
mounting pad
Fusing options: (a) internally mounted
expulsion fuses, (b) internally mounted
expulsion fuses with series connected
backup current limiting fuses, (c)
draw-out expulsion fuses with series
connected isolation links, (d) draw-out
expulsion fuses with series connected
backup current limiting fuses, or (e)
draw-out full-range current limiting
fuses in dry well canisters (Note:
Fusing selection may result in a
continuous rating below 200 Amps.)
Fault indicators or provisions only
Drip shields for use with draw-out
expulsion fuses
Tank ground connectors
Additional accessory mounting
brackets
Hexhead security bolt
Laser engraved stainless steel
nameplate
Custom stencilling and labeling
NEMA safety label
Typical Single-Phase Conf
igurations
Configurations
Front View
Schematic
Front View
Document No. 1014-02
Page 2
Schematic
Reference No. 1
Reference No. 6
Reference No. 2
Refence No. 7
Reference No. 3
Reference No. 8
Reference No. 4
Reference No. 9
Front View Legend
High-voltage bushing
Loadbreak switch
Reference No. 5
Draw-out fuse
Accessory mounting bracket
Typical Three-Phase Conf
igurations
Configurations
Front View
Schematic
Reference No. 10
Front View
Schematic
Reference No. 11
Contact your local Howard Industries distributor or sales representative for availability of features or configurations not shown.
© 2002 Howard Industries, Inc.
All rights reserved.
Printed in USA.
Howard Industries, Inc.
P.O. Box 1588
Laurel, MS USA 39441-1588
www.howardtransformers.com