DM660KD - Hammond Power Solutions 660 kVA 480-240V 3-Phase Transformer

DM660KD

DM660KD is a 660 kVA three-phase transformer from Hammond Power Solutions designed for reliable power distribution.DM660KD features a 480V delta primary and 240V secondary voltage configuration with aluminum windings. It is engineered to withstand overcurrent conditions of 150% rated load for 60 seconds or 200% for 30 seconds, ensuring durability under transient loads. The transformer is floor-mounted with a robust NJ3 case style and weighs approximately 2900 lbs. It operates at 60 Hz frequency and is suitable for general purpose applications including appliance, lighting, heating, and motor loads.

Key Specifications
• Power Rating: 660 kVA
• Phase: 3-Phase
• Primary Voltage: 480V Delta
• Secondary Voltage: 240V
• Frequency: 60 Hz
• Winding Material: Aluminum
• Mounting Type: Floor Mount
• Case Style: NJ3
• Overcurrent Withstand: 150% for 60 sec, 200% for 30 sec
• Approximate Weight: 2900 lbs

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Specifications

• Part Number: DM660KD
• 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
• Secondary Voltage : 240Y/139
• Secondary Connection : Wye-N
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 660
• 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 : 62 dBA (NEMA ST-20)
• Impedance (Std) : 5.5% - 7.5%
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : NJ3-N3R
• Enclosure Dimensions : 66in/1677mm(H), 51.5in/1309mm(W), 43.4in/1103mm(D)
• Nameplate : Standard
• Standard kVA : 660
• 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
• Primary FCAN (Std) : 2x2.5%
• Primary Termination (Std) : Mounting Pads

Product Data

• UPC : 803423004750
• GTIN : 00803423004750
• Weight : 2900
• Certification : CSA, UL

Documentation and Resources

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