SK3A0225KK3K - Hammond Power Solutions 225 kVA 3-Phase 480D-480Y/277V Sentinel-K Transformer 60Hz 150C 3R

SK3A0225KK3K

SK3A0225KK3K is a Hammond Power Solutions Sentinel-K series 3-phase general purpose distribution transformer with a 225 kVA rating.

This transformer features a 480V Delta primary and 480Y/277V secondary voltage configuration, designed for 60 Hz operation with a 150°C temperature rise. It is copper wound and housed in a Type 3R enclosure suitable for outdoor use. The unit is part of the Sentinel-K K13 frame, optimized for energy efficiency and durability in low voltage distribution applications.

• 225 kVA power rating
• 3-phase configuration
• 480V Delta primary voltage
• 480Y/277V secondary voltage
• 60 Hz frequency
• 150°C temperature rise
• Copper winding
• Type 3R enclosure for outdoor use
• Sentinel-K K13 series/frame

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Specifications

• Part Number: SK3A0225KK3K
• 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 : 271.403
• Efficiency Regulation : DOE 2016 (US), NRCAN 2019 (Canada), NMX 2021 (Mexico)
• Seismic Compliance : IBC 2018 (Sds=2.0, z/h=1, lp=1.5)
• Sound Level : 58 dBA (NEMA ST-20)
• Impedance (Std) : 3.5% - 7%
• Secondary Termination (NPL) : Mechanical Lugs
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH4-N3R
• Enclosure Dimensions : 44.5in/1131mm(H), 31.5in/801mm(W), 29.5in/750mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 225
• Vector Configuration : Dyn1 (-30°)
• Seismic Standard Value : IBC 2018
• OSHPD : No
• Seismic IP : lp=1.5
• Seismic ZH : z/h=1
• Seismic SDS Value : Sds=2.0
• Enclosure IR Window : No

Product Data

• UPC : 803423130671
• Weight : 1500
• Certification : CSA, UL

Documentation and Resources

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