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 • • • • • • • • • • 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 • • • • • • • • • • 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