SK3A0015KB4S - Hammond Power Solutions 15 kVA 3-Phase 480D-208Y/120V K4 Sentinel-K Transformer

SK3A0015KB4S

SK3A0015KB4S is a 15 kVA, 3-phase Sentinel-K K4 series transformer from Hammond Power Solutions designed for energy-efficient power distribution.

This transformer features a 480V Delta primary and 208Y/120V secondary voltage configuration, aluminum winding, and operates at 60 Hz frequency with a 150°C temperature rise. It is built for general purpose low-voltage distribution applications rated for 600 volts and below, suitable for supplying appliances, lighting, heating, and motor loads. The enclosure is Type 3R, providing protection against rain and snow, and the unit meets UL and CSA certification standards. It is part of the Sentinel-K energy-efficient k-factor transformer line, optimized for non-linear load environments.

• Power Rating: 15 kVA
• Phase: 3-Phase
• Primary Voltage: 480V Delta
• Secondary Voltage: 208Y/120V
• Frequency: 60 Hz
• Winding Material: Aluminum
• Temperature Rise: 150°C
• Enclosure Type: Type 3R
• Series: Sentinel-K K4
• Certifications: UL Listed, CSA Certified

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Specifications

• Part Number: SK3A0015KB4S
• 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 : 208Y/120
• 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 : 803423126490
• Weight : 175
• Certification : CSA, UL

Documentation and Resources

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