Hammond Power Solutions SG3A0300KB - 3-Phase Transformer 300kVA 480D-208Y/120V

SG3A0300KB

Hammond Power Solutions SG3A0300KB is a three-phase general duty transformer designed for industrial power distribution applications. This 300 kVA transformer features a 480V delta primary connection with multiple voltage taps and provides 208Y/120V secondary output through wye-N configuration. Constructed with aluminum windings rated for 150°C temperature rise and 220°C insulation class, the unit is housed in a Type 3R/IP24 enclosure with ANSI 61 grey finish measuring 52"H × 37.5"W × 34"D. The transformer complies with DOE 2016, NRCAN 2019, and NMX 2021 efficiency standards while meeting IBC 2018 seismic requirements with Sds=2.0 and operating at 55 dBA sound levels. Typical applications include commercial buildings, manufacturing facilities, and industrial plants requiring reliable three-phase power conversion. Key Features & Specifications

• Type: Three-Phase General Duty Transformer
• Voltage: 480V Delta Primary, 208Y/120V Secondary
• Current: 300 kVA Capacity
• Frequency: 60Hz
• Material: Aluminum Windings
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Impedance: 3.5% - 7% Standard
• Enclosure: Type 3R / IP24, ANSI 61 Grey
• Dimensions: 52"H × 37.5"W × 34"D (1321mm × 953mm × 864mm)
• Sound Level: 55 dBA (NEMA ST-20)
• Efficiency Compliance: DOE 2016, NRCAN 2019, NMX 2021
• Seismic Rating: IBC 2018 (Sds=2.0, z/h=0, lp=1.5)

Specifications

• Part Number: SG3A0300KB
• 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 : 300
• 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) : 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)
• Nameplate : Standard
• Standard kVA : 300
• 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 : 803423123765
• Weight : 1850
• Certification : CSA, UL

Documentation and Resources

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