Hammond Power Solutions DM440KKC - 3-Phase Transformer 440 kVA (480D-480Y/277V)

DM440KKC

Hammond Power Solutions DM440KKC is a three-phase general duty transformer designed for industrial power distribution applications. The unit features a 480V delta primary configuration and delivers 480Y/277V secondary voltage with 440 kVA capacity, operating at 60Hz frequency with standard impedance ranging from 4.5% to 7%. Constructed with a Type 3R/IP24 rated enclosure finished in ANSI 61 Grey, the transformer measures 59 inches high by 48.5 inches wide by 38 inches deep and features a temperature rise of 150°C with 220°C insulation class. The transformer complies with IBC 2018 seismic standards (Sds=2.0, z/h=0, lp=1.5) and NEMA ST-20 sound level requirements at 60 dBA, while being approved for installation in both US and LATAM markets. Typical applications include industrial facilities, commercial buildings, and power distribution systems requiring reliable three-phase power transformation with wye-secondary configuration for lighting and motor loads. Key Features & Specifications

• Type: Three-Phase General Duty Transformer
• Voltage: 480V Delta Primary, 480Y/277V Secondary
• Current: 440 kVA Capacity
• Frequency: 60Hz
• Impedance: 4.5% - 7% Standard
• Enclosure: Type 3R/IP24, ANSI 61 Grey
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Dimensions: 59"H × 48.5"W × 38"D
• Sound Level: 60 dBA (NEMA ST-20)
• Seismic Compliance: IBC 2018 (Sds=2.0)
• Vector Configuration: Dyn1 (-30°)

Specifications

• Part Number: DM440KKC
• 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) : 2x2.5%
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 440
• Efficiency Regulation : No Efficiency Specification; approved for installation in US and LATAM
• Seismic Compliance : IBC 2018 (Sds=2.0, z/h=0, lp=1.5)
• Sound Level : 60 dBA (NEMA ST-20)
• Impedance (Std) : 4.5% - 7%
• Secondary Termination (NPL) : Mounting Pads
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : NJ2-N3R
• Enclosure Dimensions : 59in/1499mm(H), 48.5in/1232mm(W), 38in/966mm(D)
• Nameplate : Standard
• Standard kVA : 440
• 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 : 803423052911
• Weight : 2550
• Certification : CSA, UL

Documentation and Resources

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