Hammond Power Solutions DM440KK - 3-Phase Transformer 440 kVA (480D-480Y/277V)

DM440KK

The Hammond Power Solutions DM440KK is a three-phase general duty transformer designed for industrial power distribution applications. It features a 480V delta primary configuration and delivers 480Y/277V secondary output with 440 kVA capacity, 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 59"H x 48.5"W x 38"D, and operates at 60 Hz with 4.5-7% impedance while maintaining 60 dBA sound levels. Compliant with IBC 2018 seismic standards (Sds=2.0, z/h=0, lp=1.5) and approved for installation in US and LATAM markets, this transformer is suitable for commercial and industrial facilities requiring reliable power conversion with standard duty cycle performance. Key Features & Specifications

• Type: Three-Phase General Duty Transformer
• Primary Voltage: 480V Delta
• Secondary Voltage: 480Y/277V Wye-N
• Capacity: 440 kVA
• Frequency: 60 Hz
• Impedance: 4.5-7%
• Material: Aluminum Windings
• Temperature Rise: 150°C
• Insulation Class: 220°C
• Enclosure: Type 3R/IP24
• Dimensions: 59"H x 48.5"W x 38"D
• Sound Level: 60 dBA
• Seismic Compliance: IBC 2018 (Sds=2.0)

Specifications

• Part Number: DM440KK
• 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
• Material : Aluminum
• 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 : 803423052904
• Weight : 2600
• Certification : CSA, UL

Documentation and Resources

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