DM275KK - Hammond Power Solutions 275 kVA 480V Delta to 480YV Drive Isolation Transformer 3 Phase 60 Hz Floor Mount NJ1-N3R Enclosure

DM275KK

DM275KK is a 275 kVA three-phase drive isolation transformer from Hammond Power Solutions designed for industrial variable speed drive applications.DM275KK features a 480V delta primary and 480YV secondary voltage configuration, operating at 60 Hz frequency. It is constructed with aluminum windings and high-grade silicon steel laminations, insulated to 220°C, and housed in a robust NJ1-N3R indoor/outdoor enclosure. The transformer supports floor mounting and includes a coil-mounted thermal warning switch for enhanced protection. It is engineered to withstand overcurrent conditions of 150% rated load for 60 seconds or 200% for 30 seconds, providing reliable electrical isolation between the incoming line and SCR load.

Key Specifications
• Power Rating: 275 kVA
• Phase: 3 Phase
• Primary Voltage: 480V Delta
• Secondary Voltage: 480YV
• Frequency: 60 Hz
• Insulation System: 220°C
• Winding Material: Aluminum
• Mounting Type: Floor Mount
• Enclosure Type: NJ1-N3R Indoor/Outdoor
• Thermal Protection: Coil Mounted Thermal Warning Switch
• Dimensions: 34 in L x 39.5 in W x 51.5 in H

At Essential Parts, we offer fast shipping, lowest price, and expert support to help you get the right product every time.

Specifications

• Part Number: DM275KK
• 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 : 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 : 803423052782
• GTIN : 00803423052782
• Weight : 1450
• Certification : CSA, UL

Documentation and Resources

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