Effective March 2018 Technical Data TD02104001E Supersedes June 2012 Eaton Switchgear Power Center construction features Introducing the Eaton Switchgear Power Center The Eaton Switchgear Power Center is a state-of-the-art solution for integrating 5 kV through 38 kV metal-clad switchgear and other electrical control and protection equipment into a single outdoor enclosure. The Eaton Switchgear Power Center enclosure can be provided with additional space for control and protection panels, dc battery systems, security equipment, communications panels, local HMI, accessory and spare parts storage, and other equipment, as specified. The Power Center enclosure, along with the switchgear and other equipment, is designed, manufactured, and tested as a combined assembly at Eaton’s Omaha, NE, facility. One of the many benefits of an Eaton Switchgear Power Center is its thermal insulation and HVAC system, which are included to maintain a safe, climate-controlled environment for maintenance and operations personnel. For proven performance and pioneering technology, choose an Eaton Switchgear Power Center. Technical Data TD02104001E Eaton Switchgear Power Center Effective March 2018 construction features Autodesk Inventor Design of an Eaton Switchgear Power Center begins with the use of the best available design tools. Eaton uses Autodesk InventorT for development of its mechanical designs. Autodesk Inventor is a three-dimensional modeling program that will automatically check interferences to ensure that all components and subassemblies fit together properly. It allows Eaton to view the complete assembly from any angle so the design can be optimized to take advantage of the most efficient fabrication and assembly methods. Customer drawings can be prepared in AutoCADT or MicroStationT format and can be supplied in the medium desired by the customer, including drawing files transmitted electronically or on a compact disc. Eaton can also use an FTP site for efficient exchange of technical information during the life of a project. Bill-of-material callouts Eaton’s Omaha Power Center uses bill-of-material callouts on drawings so that customers can easily identify installed components. The callouts reference the bill-of-material item number so that technical information relating to operation or maintenance can be easily located. Operation and Maintenance manuals can be provided on CD in fully indexed pdf format for easy access from any computer. Bill-of-material item description Item Qty Description 50 1 Communications Processor Schweitzer SEL2032/T1 Cat. No. 203233X344XXXX Standard with SCADA RTU functions, remote access, and plug-in protocol cards. Horizontal panel mount. Standard memory for database and settings storage with archive storage memory. Power supply input 85–140 Vac, output 38–200 Vdc, I/O board with four outputs, 16 inputs, and input voltage of 125 Vdc. 2 EATON www.eaton.com Eaton Switchgear Power Center Technical Data TD02104001E construction features Effective March 2018 Fabrication Each Eaton Switchgear Power Center and every switchgear enclosure manufactured in Eaton’s Omaha facility is fabricated from 11-gauge steel. All steel is cut on a fully automated high- energy laser. Programming is downloaded directly from the Eaton engineering server. The precision of the laser ensures that all pieces are cut to the correct size every time. The net result is that pieces fit to exacting tolerances to ensure weatherproof integrity of the Power Center enclosure. The smooth edges left by laser cutting allow excellent adhesion of the protective powder coating and prevent possible damage to wiring. Angle iron longitudinal bracing Eaton Switchgear Power Center equipment bases are fabricated from structural steel channel. This allows the switchgear to be installed cantilevered over a concrete pad or on piers, without the need for additional bracing. Floors are fabricated from 7-gauge plate steel with structural steel angles installed along the entire length of the base on 12-inch centers. This system provides superior performance over 1/4-inch plate steel floors and ensures that breakers battery systems, test equipment, and other materials located in the aisle or work areas are properly supported at all times. EATON www.eaton.com 3 Technical Data TD02104001E Eaton Switchgear Power Center Effective March 2018 construction features Protective coatings An amine-cured, coal tar epoxy protective coating is applied to the bottom of each Eaton Switchgear Power Center base to prevent corrosion after installation. Spray-on foam insulation is applied to meet building codes and customer specifications. The outside perimeter of each base is protected with a corrosion-resistant, black epoxy coating that adheres well to structural steel and is resistant to damage from impact. Permanent lifting eyes are integrally welded at the corners of each shipping section to facilitate unloading at the job site. Access for shipping split The floor is protected by a non-skid epoxy coating that resists marring and scratches. This coating is allowed to fully cure prior to the start of assembly. Cutouts are provided in the floor for entry of control or power cables, as required. A steel or aluminum cover plate is installed over each cutout. Access cutouts are provided at shipping splits, when required, to allow bolting of the base sections together. Cover plates for access openings are installed flush with the floor and held in place with countersunk screws that are level with the floor surface to eliminate any possible tripping hazard. 4 EATON www.eaton.com Eaton Switchgear Power Center Technical Data TD02104001E construction features Effective March 2018 After fabrication is complete, all metal parts are cleaned under high pressure, followed by an application of a protective phosphate coating to improve corrosion inhibition. Each piece is then electrostatically coated with a polyester powder. The powder coating is fully cured in a baking oven so that parts can be assembled immediately after cool-down. Powder coating provides superior coverage on edges and hard-to-reach areas and is very resistant to high temperatures. A high- gloss finish prevents absorption of dust and dirt and is easy to clean. The Eaton powder coat provides superior performance and resistance to the following conditions: • Marring and scratching • Direct impact • Reverse impact • Chipping • Corrosive atmospheres • Cracking from bending • Ultraviolet radiation • Extreme heat • Wind-borne snow and rain • Wind-borne dust and sand Following are results of actual ASTM tests that compare performance of the powder coat to polyurethane and acrylic enamel finishes commonly used by other manufacturers. Pencil hardness (ASTM D3363) (resistance to marring and scratches) 6B … 5B … 4B … 3B … 2B … B … HB … F … H … 2H … 3H … 4H … 5H … 6H … Softer Harder Polyester powder Polyurethane Acrylic enamel 2H–4H F–H B–HB Chip resistance (ASTM D3170) (resistance to chipping by impact) Flexibility (ASTM D522) (cracking under bending) 3A–3D … 4A–4D … 5A–5D … 6A–6D … 7A–7D … 8A–8D … 9A–9D … Polyester powder Polyurethane Acrylic enamel Worse Better Pass Pass Fail Polyester powder Polyurethane Acrylic enamel 5A 4A 3B Salt spray (ASTM B117) (resistance to corrosion) Polyester Powder Polyurethane Acrylic enamel Impact resistance (ASTM D2794) (resistance to cracking under 2X 1X 1X impact) Direct impact Polyester powder Polyurethane Acrylic enamel Accelerated weathering (QUV340A) (gloss retention and color fastness) +160 in-lb +75 in-lb +30 in-lb Polyester powder Polyurethane Acrylic enamel 10% loss at 2000 hours 10% loss at 1000 hours 10% loss at 1000 hours Reverse impact Polyester powder Polyurethane Acrylic enamel +160 in-lb +40 in-lb +10 in-lb EATON www.eaton.com 5 Technical Data TD02104001E Eaton Switchgear Power Center Effective March 2018 construction features Interior coating and floor protection After fabrication, each switchgear cubicle receives a high-visibility white polyester powder coat inside and out. Cubicles are then assembled onto a base and bolted together to form the switchgear lineup. Masonite sheets are installed over all open floor areas to protect the floor surface during assembly and wiring. The masonite sheets are left in place to continue to protect the floor during installation and testing at the job site. As a result, floor surfaces stay in perfect condition, without the need for touchup or re-coating prior to placing the equipment into service. Masonite sheets Walls Eaton Switchgear Power Center walls are fabricated from 11-gauge steel and coated on both sides with a polyester powder. Each panel is fabricated with a double-return flange. When bolted together, they create an I-beam shape (as shown below) for added strength. 11-gauge steel Double-return flange Walls are thermally insulated with rigid, closed-cell foam to meet customer specifications or any applicable state building codes. This material has a higher insulation value than fiberglass batting and will not sag once installed. The rigid foam is easy to form around cutouts and other shapes in order to insulate all spaces, and will not absorb moisture should condensation be present. After installation, insulation is protected by 14-gauge steel wall panels. 6 EATON www.eaton.com Eaton Switchgear Power Center Technical Data TD02104001E construction features Effective March 2018 Tapered roof channel Roof After the walls of the Eaton Switchgear Power Center have been erected, full-depth tapered roof channels, spaced every 36 inches, are bolted