Hammond Power Solutions SK3A0045KK4K - 45 kVA Transformer 480D-480Y/277V Seismic Rated

SK3A0045KK4K

Hammond Power Solutions SK3A0045KK4K is a three-phase general duty transformer designed for industrial power distribution applications. This 45 kVA unit features a 480V delta primary connection and 480Y/277V wye secondary configuration, operating at 60Hz frequency with a temperature rise of 150°C and 220°C insulation class. The transformer is housed in a Type 3R/IP24 rated enclosure measuring 28.75" H × 25.75" W × 23.8" D with ANSI 61 grey finish, featuring mechanical lug terminations and producing only 45 dBA sound levels. It complies with DOE 2016, NRCAN 2019, and NMX 2021 efficiency regulations while meeting OSHPD and IBC 2018 seismic requirements (Sds=2.0, z/h=1, lp=1.5). Typical applications include commercial buildings, industrial facilities, and utility power distribution systems requiring reliable voltage transformation with seismic resilience. Key Features & Specifications

• Type: Three-Phase General Duty Transformer
• Voltage: 480V Delta Primary, 480Y/277V Secondary
• Current: 45 kVA Capacity
• Frequency: 60Hz
• Enclosure: Type 3R/IP24, ANSI 61 Grey
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Sound Level: 45 dBA
• Impedance: 2.5% - 6.5%
• Efficiency Compliance: DOE 2016, NRCAN 2019, NMX 2021
• Seismic Rating: OSHPD, IBC 2018 (Sds=2.0)
• Dimensions: 28.75" H × 25.75" W × 23.8" D

Specifications

• Part Number: SK3A0045KK4K
• 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) : 4x2.5%
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 47.1964
• Efficiency Regulation : DOE 2016 (US), NRCAN 2019 (Canada), NMX 2021 (Mexico)
• Seismic Compliance : OSHPD, IBC 2018 (Sds=2.0, z/h=1, lp=1.5)
• Sound Level : 45 dBA (NEMA ST-20)
• Impedance (Std) : 2.5% - 6.5%
• Secondary Termination (NPL) : Mechanical Lugs
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH2-N3R
• Enclosure Dimensions : 28.75in/731mm(H), 25.75in/655mm(W), 23.8in/605mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 45
• Vector Configuration : Dyn1 (-30°)
• Seismic Standard Value : IBC 2018
• OSHPD : Yes
• Seismic IP : lp=1.5
• Seismic ZH : z/h=1
• Seismic SDS Value : Sds=2.0
• Enclosure IR Window : No

Product Data

• UPC : 803423129026
• Weight : 405
• Certification : CSA, UL

Documentation and Resources

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