Hammond Power Solutions SK3A0750KK9K - 3-Phase Transformer 750kVA 480D-480Y/277V

SK3A0750KK9K

Hammond Power Solutions SK3A0750KK9K is a three-phase transformer designed for general duty industrial power distribution applications. This 750 kVA unit operates at 60Hz with a 480V delta primary and 480Y/277V wye secondary configuration, featuring a 4-7.5% impedance range and 150°C temperature rise with 220°C insulation class. The transformer is housed in a Type 3R/IP24 enclosure with ANSI 61 grey finish, measuring 64"H x 49"W x 39"D and producing 64 dBA sound levels. It complies with DOE 2016, NRCAN 2019, and NMX 2021 efficiency regulations while meeting IBC 2018 seismic standards with Sds=2.0, z/h=0, and lp=1.5 parameters. Typical applications include industrial facilities, commercial buildings, and power distribution systems requiring reliable three-phase power transformation. Key Features & Specifications

• Type: Three-Phase Transformer
• Voltage: 480V Primary, 480Y/277V Secondary
• Current: 750 kVA Capacity
• Frequency: 60Hz
• Impedance: 4% - 7.5%
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Enclosure: Type 3R / IP24
• Dimensions: 64"H x 49"W x 39"D
• Sound Level: 64 dBA
• Efficiency Standards: DOE 2016, NRCAN 2019, NMX 2021
• Seismic Compliance: IBC 2018 (Sds=2.0)

Specifications

• Part Number: SK3A0750KK9K
• 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 : 930.726
• 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 : 64 dBA (NEMA ST-20)
• Impedance (Std) : 4% - 7.5%
• Secondary Termination (NPL) : Mounting Pads
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH6-N3R
• Enclosure Dimensions : 64in/1626mm(H), 49in/1245mm(W), 39in/991mm(D)
• Electrostatic Shield : Single
• Nameplate : Standard
• Standard kVA : 750
• 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 : 803423129972
• Weight : 4220
• Certification : CSA, UL

Documentation and Resources

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