DM020KD - Hammond Power Solutions 3-Phase Drive Isolation Transformer 20kVA 480V Delta Primary 240V Secondary Aluminum Windings NEMA 3R

DM020KD

DM020KD is a three-phase drive isolation transformer designed for industrial and commercial applications, featuring aluminum windings and a robust NEMA 3R enclosure for reliable performance. This Hammond Power Solutions transformer is engineered for use with variable frequency drives and other demanding environments. It provides electrical isolation, voltage transformation, and harmonic mitigation for sensitive equipment. The unit is constructed with aluminum windings rated for a 150°C temperature rise and 220°C insulation class, housed in a Type 3R/IP24 enclosure for protection against dust and water ingress. The transformer is suitable for floor mounting and meets IBC 2018 seismic standards (Sds=2.0, z/h=0, lp=1.5), with a sound level of 45 dBA for quiet operation.

• Part Number: DM020KD
• Manufacturer: Hammond Power Solutions
• Type: 3-Phase Drive Isolation Transformer
• Rating: 20 kVA
• Primary Voltage: 480V Delta
• Secondary Voltage: 240V
• Winding Material: Aluminum
• Insulation Class: 220°C (150°C rise)
• Enclosure: NEMA 3R / IP24
• Mounting: Floor Mount
• Frequency: 60 Hz
• Seismic Rating: IBC 2018 (Sds=2.0, z/h=0, lp=1.5)
• Sound Level: 45 dBA

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Specifications

• Part Number: DM020KD
• 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) : 1x5%
• Primary FCBN (NPL) : 1x5%
• Secondary Voltage : 240Y/139
• Secondary Connection : Wye-N
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 20
• 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 : 45 dBA (NEMA ST-20)
• Impedance (Std) : 3% - 6%
• Secondary Termination (NPL) : Mechanical Lugs
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : NH6-N3R
• Enclosure Dimensions : 28.75in/731mm(H), 23.9in/608mm(W), 25in/635mm(D)
• Nameplate : Standard
• Standard kVA : 20
• 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 : 803423002831
• GTIN : 00803423002831
• Weight : 230
• Certification : CSA, UL

Documentation and Resources

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