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Description
The Hammond Power Solutions (HPS) SG3A0075DK dry type transformer is a high-efficiency general-purpose distribution transformer rated for 600 volts and below. It is designed to supply power to appliances, lighting, heating systems, motorized machines, and other electrical loads in industrial and commercial settings. With a 240 Delta VAC primary and a 480Y/277 VAC secondary, this transformer delivers 75 kVA of power at 60 Hz frequency, making it ideal for various electrical distribution applications.
Built for energy efficiency, the HPS SG3A0075DK 75 kVA transformer meets the latest U.S. DOE 10 CFR Part 431 efficiency standards, offering 98.6% efficiency, which helps reduce energy losses and operating costs. It features aluminum windings and precision-cut, cold-rolled silicon steel laminations, ensuring reliable performance and improved magnetic properties. The NEMA 3R enclosure makes it suitable for both indoor and outdoor installations, offering protection against rain, sleet, and snow. Front-accessible high and low-voltage terminals with aluminum and copper-compatible connectors simplify cable installation, while side knockouts and bottom conduit entry enhance wiring flexibility.
Key Features of HPS SG3A0075DK 240 Volts Transformer:
• Aluminum winding for reliable performance.
• 150°C temperature rise, 220°C insulation class.
• Enclosure NEMA 3R – suitable for indoor and outdoor applications.
• Floor mounting with lug/pad connections.
• Meets ST-20 standard sound levels.
• BIL Rating: 10 kV Basic Insulation Level (BIL) on all three-phase DOE 2016-compliant models.
• UL Listed and CSA Certified for safety and reliability.
• Robust core and coil interface enhances short-circuit performance.
• Moisture-resistant core coating improves durability.
• Side knockouts and bottom conduit entry for simplified wiring.
• Custom sizes, ratings, and styles available upon request.

Additional information
- DIMENSIONS
27 × 28.3 × 36 in
- KVA:
75
- PHASE:
THREE
- PRIMARY VOLTAGE:
240
- SECONDARY VOLTAGE:
480Y
277
- WINDING MATERIAL:
ALUMINUM
- HZ:
60
- TEMP RISE:
150
- ENCLOSURE:
NEMA 3R
- TYPE:
ENERGY EFFICIENT GENERAL PURPOSE DISTRIBUTION
- OTHER:
SCD53
- TAPS:
2+4-2.5%
- TRADE NAME:
HPS SENTINEL G
- Weight
510 lsb