Hammond Power Solutions SK3A0015KK4S - 3-Phase Transformer 15kVA 480D-480Y/277V

SK3A0015KK4S

Hammond Power Solutions SK3A0015KK4S is a three-phase general duty transformer designed for industrial power distribution applications. This 15 kVA transformer features a 480V delta primary and 480Y/277V secondary configuration with aluminum windings rated for 150°C temperature rise and 220°C insulation class. The unit is housed in a Type 3R/IP24 rated enclosure measuring 21.88 inches high by 21.5 inches wide by 20.12 inches deep with ANSI 61 grey finish, providing outdoor weather protection. It complies with DOE 2016, NRCan 2019, and NMX 2021 efficiency standards while meeting OSHPD and IBC 2018 seismic requirements for Sds=2.0 with z/h=1 and lp=1.5. Typical applications include commercial buildings, industrial facilities, and infrastructure projects requiring reliable three-phase power conversion with mechanical lug terminations and 45 dBA sound level operation. Key Features & Specifications

• Type: Three-Phase General Duty Transformer
• Primary Voltage: 480V Delta
• Secondary Voltage: 480Y/277V Wye-N
• Standard kVA: 15
• Frequency: 60Hz
• Material: Aluminum Windings
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Impedance: 2.5% - 6.5%
• Enclosure: Type 3R/IP24, ANSI 61 Grey
• Dimensions: 21.88"H × 21.5"W × 20.12"D
• Sound Level: 45 dBA (NEMA ST-20)
• Seismic Compliance: OSHPD, IBC 2018 (Sds=2.0)
• Efficiency Standards: DOE 2016, NRCan 2019, NMX 2021

Specifications

• Part Number: SK3A0015KK4S
• 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
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 15.5885
• 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) : DH1-N3R
• Enclosure Dimensions : 21.88in/556mm(H), 21.5in/547mm(W), 20.12in/512mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 15
• 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 : 803423128890
• Weight : 180
• Certification : CSA, UL

Documentation and Resources

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