Custom Metal-Enclosed Switchgear
Contruction Features — Enclosure
- Wide bulkhead-type doors provide easy access to all bays
- Protective screen doors bolt closed. They’re a second barrier, guarding against inadvertent entry to bays containing medium-voltage components
- Deep 90-degree flanges on the extra-rugged doors assure rigidity and discourage tampering. Sheared edges are folded back, toward the inside of the door, to limit exposure and to help prevent corrosion
- Three concealed, high-strength latches seal doors shut
- 11-gauge steel roof, side, and rear sheets; front; and door
- Full-length doors have three concealed, extra-heavy-duty hinges. Stainless-steel pins won’t corrode, so doors pivot with ease
- Full side sheets for each bay create double-wall construction between bays
- Wide-view windows are impact and mar resistant. Let you check switch positions, blown fuse indicators, and status of controls without opening the doors
- Padlockable window covers — included on Category A enclosures
- Nameplate provides switchgear ratings
- Exterior hazard-alerting signs warn the unqualified
- Flush-mounted key-operated snap locks, plus interlocks and padlocks, help control access to medium-voltage components
- Padlockable handles on doors and covers shield padlock shackle and thwart tampering. Enclosures specified with Category A construction utilize S&C’s Penta-Lock, providing coordinated latching and padlocking on door handles
- Integral steel base on all four sides of each bay keeps enclosure rigidly positioned, helps block inter-bay openings at the bottom
- Interior hazard-alerting signs are unmistakably bold and clear
- Self-latching door holders securely hold doors open against accidental or windblown closing, unlatch with a touch of the toe for closing
- Low-voltage wiring is in grounded cable trays, isolated from medium voltage
- Storage racks keep replacement fuse components in a convenient location
- Specialized gaskets on outdoor switchgear guard against water entry
- Insulating “no-drip” compound on inner underside of roof checks condensation
- Rainproof vent construction keeps water out but lets air circulate to control moisture. Baffles and screens inside the enclosures cover vents, discouraging wire-poking
- Space heaters for outdoor switchgear maintain air circulation inside enclosure; help keep interior dry
- S&C’s Ultradur® Finishing System protects steel with multistage pretreatment process of high-pressure-sprayed cleaning, rinsing, phosphatizing, and sealing; durable, baked-on, epoxy powder initial finish coat; and tough, stable, high-solids acrylic topcoat