DM275JH - Hammond Power Solutions 275 kVA 460V to 400Y V Drive Isolation Transformer 3 Phase Lug/Pad Floor Mount

DM275JH

DM275JH is a 275 kVA drive isolation transformer from Hammond Power Solutions designed for industrial applications requiring electrical isolation and reliable power conversion.

This transformer features a 460 VAC primary voltage and 400Y VAC secondary voltage with a 3-phase configuration. It is constructed with aluminum windings and a 220°C insulation system, suitable for 60 Hz operation. The unit includes lug/pad type connections and is designed for floor mounting. It provides electrical isolation between the incoming line and the SCR load, withstanding overcurrent conditions of 150% rated load for 60 seconds or 200% for 30 seconds. The enclosure is suitable for indoor/outdoor use with ANSI 61 UL 50 gray finish and includes a coil-mounted thermal warning switch.

• Power rating: 275 kVA
• Primary voltage: 460 VAC
• Secondary voltage: 400Y VAC
• Phase: 3-phase
• Frequency: 60 Hz
• Winding material: Aluminum
• Insulation temperature rating: 220°C
• Connection type: Lug/Pad
• Mounting type: Floor mount
• Overcurrent withstand: 150% rated load for 60 seconds, 200% for 30 seconds
• Enclosure: Indoor/Outdoor, ANSI 61 UL 50 gray finish
• Includes coil-mounted thermal warning switch

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Specifications

• Part Number: DM275JH
• Manufacturer : Hammond Power Solutions
• Brand : Hammond Power Solutions
• Category : Transformer
• Phase : 3
• Enclosure Grade : Standard
• Duty : General Duty
• Frequency : 60Hz
• Primary Voltage : 460D
• Primary Connection : Delta
• Primary FCAN (NPL) : 2x2.5%
• Primary FCBN (NPL) : 2x2.5%
• Secondary Voltage : 400Y/231
• Secondary Connection : Wye-N
• Material : Aluminum
• 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 : 803423052768
• GTIN : 00803423052768
• Weight : 1400
• Certification : CSA, UL

Documentation and Resources

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