Hammond Power Solutions SK3A0225KB3S - 3-Phase Transformer 225kVA 480D-208Y/120V

SK3A0225KB3S

Hammond Power Solutions SK3A0225KB3S is a three-phase general duty transformer designed for industrial power distribution applications. The unit features a 480V delta primary configuration with 2x2.5% FCAN and 4x2.5% FCBN taps, stepping down to 208Y/120V secondary with wye-N connection, delivering 225 kVA standard rating with 271.403 EKVA capacity. Constructed with aluminum windings and rated for 150°C temperature rise with 220°C insulation class, the transformer is housed in a Type 3R/IP24 enclosure measuring 52"H x 37.5"W x 34"D with ANSI 61 grey finish and features 58 dBA sound level operation. The unit complies with DOE 2016, NRCAN 2019, and NMX 2021 efficiency regulations and meets IBC 2018 seismic standards with Sds=2.0, z/h=0, and lp=1.5 parameters. Typical applications include industrial facilities, commercial buildings, and institutional power systems requiring reliable three-phase power conversion with standard impedance range of 3.5% to 7% and Dyn1 vector configuration. Key Features & Specifications

• Type: Three-phase general duty transformer
• Voltage: 480V delta primary, 208Y/120V secondary
• Current: 225 kVA standard rating
• Frequency: 60Hz
• Material: Aluminum windings
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Enclosure: Type 3R/IP24, ANSI 61 grey
• Dimensions: 52"H x 37.5"W x 34"D
• Sound Level: 58 dBA
• Impedance: 3.5% - 7%
• Efficiency Compliance: DOE 2016, NRCAN 2019, NMX 2021
• Seismic Standard: IBC 2018 (Sds=2.0)

Specifications

• Part Number: SK3A0225KB3S
• 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 : 271.403
• 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 : 58 dBA (NEMA ST-20)
• Impedance (Std) : 3.5% - 7%
• Secondary Termination (NPL) : Mounting Pads
• 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 : 803423130237
• Weight : 1650
• Certification : CSA, UL

Documentation and Resources

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