SK3A0300KK9S - Hammond Power Solutions 300kVA 3-Phase 480D-480Y/277V Aluminum K-Factor Transformer 60Hz 150C 3R

SK3A0300KK9S

SK3A0300KK9S is a three-phase, aluminum wound, k-factor rated distribution transformer from Hammond Power Solutions, designed for energy-efficient operation in commercial and industrial environments. This unit features a heavy-duty ventilated Type 3R enclosure and is built to meet DOE 2016 and NRCan 2019 efficiency standards. The SK3A0300KK9S is engineered for applications with non-linear loads, providing reliable performance with a 150°C temperature rise and 220°C insulation class. It offers front accessible terminals compatible with both aluminum and copper conductors, making installation and maintenance straightforward. The transformer is suitable for wall or floor mounting and is ideal for powering lighting, heating, motorized machines, and other power loads in adverse atmospheric conditions.

• 300kVA three-phase transformer
• 480V delta primary, 480Y/277V wye secondary
• Aluminum winding
• 60Hz frequency
• 150°C temperature rise
• 220°C insulation class
• Type 3R enclosure
• Heavy-duty ventilated construction
• Front accessible terminals
• Wall or floor mountable
• UL Listed
• CSA Certified

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Specifications

• Part Number: SK3A0300KK9S
• 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
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 355.598
• 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 : 55 dBA (NEMA ST-20)
• Impedance (Std) : 4% - 7.5%
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure Dimensions : 52in/1321mm(H), 37.5in/953mm(W), 34in/864mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 300
• 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
• Primary FCAN (Std) : 2x2.5%
• Primary Termination (Std) : Mounting Pads

Product Data

• UPC : 803423129842
• Weight : 1600
• Certification : CSA, UL

Documentation and Resources

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