SK3A0225KK4S - Hammond Power Solutions 225kVA 3-Phase 480D-480Y/277V Aluminum Wound Transformer K4 Frame

SK3A0225KK4S

SK3A0225KK4S is a 225kVA three-phase general purpose distribution transformer from Hammond Power Solutions' Sentinel K Series with aluminum windings and K4 frame.

This transformer is designed for 480D-480Y/277V voltage configuration, rated at 225,000 VA with 60 Hz frequency and a 150°C temperature rise. It features a Type 3R enclosure suitable for outdoor use, with front accessible terminals compatible with aluminum and copper conductors. The unit meets North American efficiency standards and is UL Listed and CSA Certified for reliable performance in powering appliances, lighting, heating, and motorized loads.

Key Specifications
• 225 kVA rated power
• Three-phase (3PH) configuration
• Primary voltage: 480 Delta
• Secondary voltage: 480Y/277 Volts
• Aluminum wound with electrostatic shield
• K4 frame (D16 Sentinel K Series)
• 60 Hz frequency
• 150°C temperature rise insulation
• Type 3R ventilated enclosure
• UL Listed and CSA Certified

At Essential Parts, we offer fast shipping, lowest price, and expert support to help you get the right product every time.

Specifications

• Part Number: SK3A0225KK4S
• 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 : 240.234
• 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) : 3.5% - 7%
• Secondary Termination (NPL) : Mechanical Lugs
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH5-N3R
• Enclosure Dimensions : 52in/1321mm(H), 37.5in/953mm(W), 34in/864mm(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=0
• Seismic SDS Value : Sds=2.0
• Enclosure IR Window : No

Product Data

• UPC : 803423128951
• Weight : 1450
• Certification : CSA, UL

Documentation and Resources

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