DM275KKC - Hammond Power Solutions 275 kVA 480V 3-Phase Drive Isolation Transformer Copper Wound

DM275KKC

DM275KKC is a 275 kVA 3-phase drive isolation transformer from Hammond Power Solutions designed for industrial applications.

This transformer features a 480V delta primary and 480V wye secondary configuration, copper winding, and a 220°C insulation system rated for 150°C temperature rise. It is built to withstand overcurrent conditions of 150% rated load for 60 seconds or 200% for 30 seconds. The unit is intended for indoor use with floor mounting and meets UL and CSA short circuit withstand requirements.

• 275 kVA power rating
• 480V delta primary voltage
• 480V wye secondary voltage
• 3-phase configuration
• Copper wound coils
• 220°C insulation system (150°C rise)
• Designed for drive isolation applications
• Overcurrent withstand: 150% for 60 sec, 200% for 30 sec
• Indoor floor mounting
• Meets UL and CSA short circuit withstand standards

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Specifications

• Part Number: DM275KKC
• 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 : 275
• 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 : 55 dBA (NEMA ST-20)
• Impedance (Std) : 4% - 7%
• Secondary Termination (NPL) : Mounting Pads
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : NJ1-N3R
• Enclosure Dimensions : 51.5in/1309mm(H), 39.5in/1004mm(W), 34in/864mm(D)
• Nameplate : Standard
• Standard kVA : 275
• 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 : 803423052799
• Weight : 1600
• Certification : CSA, UL

Documentation and Resources

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