DM118JH - Hammond Power Solutions 118kVA 460-400V 3-Phase Drive Isolation Transformer

DM118JH

DM118JH is a three-phase drive isolation transformer designed for demanding AC and DC variable speed drive applications. This unit provides electrical isolation between the incoming line and the SCR load, with robust windings capable of withstanding overcurrent up to 150% of rated load for 60 seconds or 200% for 30 seconds. The transformer is built for reliable performance in industrial environments and offers a 10-year warranty. The DM118JH features a 460V delta primary and 400V secondary, making it suitable for standard motor horsepower and voltage ratings. It is constructed with copper windings and a 220°C (150°C rise) insulation system, ensuring durability and thermal protection. The unit is designed for floor mounting and includes normally closed thermostats with a 200°C setpoint for added safety.

• Part Number: DM118JH
• Manufacturer: Hammond Power Solutions
• Series: DM
• Phase: Three-phase
• Rating: 118 kVA
• Primary Voltage: 460V Delta
• Secondary Voltage: 400V
• Insulation System: 220°C (150°C rise)
• Mounting Type: Floor
• Thermal Protection: Normally closed thermostats (200°C setpoint)
• Frequency: 60 Hz
• Certifications: UL listed, CSA certified

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Specifications

• Part Number: DM118JH
• 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) : 1x5%
• Primary FCBN (NPL) : 1x5%
• Secondary Voltage : 400Y/231
• Secondary Connection : Wye-N
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 118
• 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 : 50 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) : NH3-N3R
• Enclosure Dimensions : 38in/966mm(H), 26in/661mm(W), 21in/534mm(D)
• Nameplate : Standard
• Standard kVA : 118
• 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 : 803423052522
• GTIN : 00803423052522
• Weight : 680
• Certification : CSA, UL

Documentation and Resources

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