SK3A1000KK4K - Hammond Power Solutions 1000kVA 3-Phase 480D-480Y/277V Copper 60Hz 150C Rise NEMA 3R Distribution Transformer

SK3A1000KK4K

SK3A1000KK4K is a three-phase distribution transformer from Hammond Power Solutions, designed for reliable and efficient power distribution in commercial and industrial applications. This unit features a copper winding, NEMA 3R enclosure, and is rated for 1000kVA with a 480V delta primary and 480Y/277V wye secondary configuration. It operates at 60Hz and is built with a 150°C temperature rise for robust performance in demanding environments. The SK3A1000KK4K is part of the Sentinel K Series, offering energy-efficient operation and a heavy-duty ventilated enclosure for protection against dust and moisture. Its front-accessible terminals support both aluminum and copper connections, simplifying installation and maintenance. The transformer is suitable for floor mounting and is engineered for general-purpose use in lighting, heating, and motor loads.

• 1000kVA capacity
• Three-phase
• 480V delta primary
• 480Y/277V wye secondary
• Copper winding
• 60Hz frequency
• 150°C temperature rise
• NEMA 3R enclosure
• Front-accessible terminals
• Floor mounting
• Heavy-duty ventilated design
• General-purpose distribution

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Specifications

• Part Number: SK3A1000KK4K
• Manufacturer : Hammond Power Solutions
• Brand : Hammond Power Solutions
• Category : Transformer
• Phase : 3
• Enclosure Grade : Standard
• Duty : General Duty
• Frequency : 60Hz
• Primary Voltage : 480D
• Primary Connection : Delta
• Primary FCAN (NPL) : 2x2.5%
• Primary FCBN (NPL) : 2x2.5%
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 1122.5
• Efficiency Regulation : DOE 2016 (US), NRCAN 2019 (Canada), NMX 2021 (Mexico)
• Seismic Compliance : IBC 2018 (Sds=2.0, z/h=0, lp=1.5)
• Sound Level : 64 dBA (NEMA ST-20)
• Impedance (Std) : 4% - 7.5%
• Secondary Termination (NPL) : Mounting Pads
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH7-N3R
• Enclosure Dimensions : 72in/1829mm(H), 54in/1372mm(W), 44in/1118mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 1000
• Vector Configuration : Dyn1 (-30°)
• Seismic Standard Value : IBC 2018
• OSHPD : No
• Seismic IP : lp=1.5
• Seismic ZH : z/h=0
• Seismic SDS Value : Sds=2.0
• Enclosure IR Window : No

Product Data

• UPC : 803423129101
• Weight : 5740
• Certification : CSA, UL

Documentation and Resources

• Engineering Drawing (PDF)
• Brochure
• Hammond Product Application Videos
• Frequently Asked Questions
• Troubleshooting Guide
• Enclosure CAD Drawing (PDF)