SG3A0500BK - Hammond Power Solutions 500 kVA 3-Phase 208 Delta to 480Y/277V Dry Type Transformer NEMA 3R

SG3A0500BK

SG3A0500BK is a 500 kVA, 3-phase dry type distribution transformer from Hammond Power Solutions designed for general purpose electrical distribution.

This transformer features a 208 Delta primary voltage and 480Y/277 secondary voltage configuration, suitable for supplying appliances, lighting, heating, and motorized machine loads. It is part of the Sentinel G series, offering energy-efficient performance with 99.14% efficiency. The unit is aluminum wound, rated for 600 volts and below, and housed in a NEMA 3R enclosure for protection against rain and snow. It operates at 60 Hz frequency and is floor mountable with lug/pad connections for easy installation. Certified to UL and CSA standards, it complies with DOE2016 and NRCan 2019 energy efficiency requirements.

• Power Rating: 500 kVA
• Phase: 3-Phase
• Primary Voltage: 208 Delta V AC
• Secondary Voltage: 480Y/277 V AC
• Frequency: 60 Hz
• Enclosure Type: NEMA 3R
• Mounting Type: Floor Mount
• Winding Material: Aluminum
• Series: Sentinel G
• Efficiency: 99.14%
• Certifications: UL Listed (File E112313), CSA Certified (File LR3902)

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Specifications

• Part Number: SG3A0500BK
• Manufacturer : Hammond Power Solutions
• Brand : Hammond Power Solutions
• Category : Transformer
• Phase : 3
• Enclosure Grade : Standard
• Duty : General Duty
• Frequency : 60Hz
• Primary Voltage : 208D
• Primary Connection : Delta
• Primary FCAN (NPL) : 1x5%
• Primary FCBN (NPL) : 1x5%
• Secondary Voltage : 480Y/277
• Secondary Connection : Wye-N
• Material : Aluminum
• Temperature Rise : 150°C
• Insulation Class : 220°C
• EKVA : 500
• Efficiency Regulation : DOE 2016 (US), NRCAN 2019 (Canada), NMX 2021 (Mexico)
• Seismic Compliance : IBC 2018 (Sds=2.0, z/h=0, lp=1.5)
• Sound Level : 60 dBA (NEMA ST-20)
• Impedance (Std) : 4% - 7.5%
• Secondary Termination (NPL) : Mounting Pads
• Enclosure Type : Type 3R / IP24
• Enclosure Finish : ANSI 61 Grey, UL50
• Enclosure PN (NPL) : DH6-N3R
• Enclosure Dimensions : 64in/1626mm(H), 49in/1245mm(W), 39in/991mm(D)
• Nameplate : Standard
• Standard kVA : 500
• Vector Configuration : YNd1 (-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 : 803423123086
• Weight : 3300
• Certification : CSA, UL

Documentation and Resources

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