SK3A0225PK4K - Hammond Power Solutions 225 kVA 3-Phase Transformer NEMA 3R

SK3A0225PK4K

SK3A0225PK4K is a three-phase general purpose distribution transformer from Hammond Power Solutions designed for industrial and commercial power distribution applications. SK3A0225PK4K delivers 225 kVA capacity with 600 Delta VAC primary voltage and 480Y/277 VAC secondary voltage at 60 Hz frequency, featuring a NEMA 3R ventilated enclosure suitable for indoor and outdoor installations. This energy-efficient transformer is part of the Sentinel K series and meets DOE 10 CFR Part 431 efficiency standards, providing significant energy savings for appliance, lighting, heating, motorized machine, and power loads. The unit features lug and pad connections for flexible installation, floor mounting capability, and aluminum windings rated for 150 degree C temperature rise.

• Power Rating: 225 kVA
• Phase: 3-Phase
• Primary Voltage: 600 Delta VAC
• Secondary Voltage: 480Y/277 VAC
• Frequency: 60 Hz
• Enclosure Type: NEMA 3R
• Connection Type: Lug/Pad
• Mounting Type: Floor
• Temperature Rise: 150 Degree C
• Winding Material: Aluminum
• UL Listed: File E112313
• CSA Certified: File LR3902

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Specifications

• Part Number: SK3A0225PK4K
• Manufacturer : Hammond Power Solutions
• Brand : Hammond Power Solutions
• Category : Transformer
• Phase : 3
• Enclosure Grade : Standard
• Duty : General Duty
• Frequency : 60Hz
• Primary Voltage : 600D
• Primary Connection : Delta
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• 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=1, lp=1.5)
• Sound Level : 55 dBA (NEMA ST-20)
• Impedance (Std) : 3.5% - 7%
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• 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
• Primary FCAN (Std) : 2x2.5%
• Primary Termination (Std) : Mechanical Lugs

Product Data

• UPC : 803423129286
• Weight : 1600
• Certification : CSA, UL

Documentation and Resources

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