HT79F3AS

Overview

The SolaHD HT79F3AS is a 3 kVA three-phase encapsulated automation transformer designed for industrial applications. It features a 480V Delta primary and a 380Y/220V secondary winding, operating at 60 Hz. The unit is non-ventilated with a NEMA Type 3R enclosure, constructed from rolled steel. Rated primary current is 3.6 Amps, while the secondary current is 4.6 Amps. It holds UL 506, UL 1561, and CSA C22.2 approvals, ensuring compliance with safety standards for hazardous locations and harsh industrial environments.

Feature Summary

• Encapsulated construction provides protection against moisture, dust, and corrosive agents in demanding industrial settings.
• Non-ventilated design eliminates the need for external cooling fans, reducing maintenance requirements and noise levels.
• NEMA Type 3R rating ensures resistance to rain, sleet, and external ice formation for reliable outdoor or semi-outdoor operation.

Applications

• Industrial automation systems
• Manufacturing and packaging machinery
• OEM equipment integration
• Material-handling and conveyor systems

Procurement Notes

Verify that the incoming inventory matches the specific part number HT79F3AS, confirming the 3 kVA rating and 480D-380Y voltage configuration. Ensure documentation includes valid UL and CSA certification marks corresponding to the manufacturing date. Inspect the NEMA Type 3R enclosure for physical integrity prior to installation in hazardous or wet locations.

Selection Notes

Select this model when a robust, maintenance-free power transformation solution is required for three-phase systems. The encapsulated design suits environments where standard ventilation would fail due to contaminants. Confirm that the load does not exceed the 4.6 Amp secondary rating and that the facility infrastructure supports the 480V Delta input requirement.

Part Context

This component belongs to the SolaHD Automation Transformers series, which specializes in non-ventilated, encapsulated units ranging from 50 VA to 45 kVA. These transformers are engineered specifically for OEM machinery and industrial control panels where space constraints and environmental resilience are critical factors for long-term operational stability.

Replacement Considerations

Direct substitutes must match the 3 kVA capacity, 480V Delta primary, and 380Y/220V secondary specifications. Verify that any alternative maintains the same NEMA Type 3R enclosure rating and physical footprint to ensure compatibility with existing mounting structures and conduit connections.

FAQ

Is the HT79F3AS suitable for hazardous locations?

Yes, the SolaHD HT79F3AS is rated for use in hazardous locations as indicated by its encapsulated construction and relevant safety approvals.

What is the secondary voltage configuration?

The secondary winding provides a 380Y/220 VAC output, supporting both wye-connected loads requiring 380V line-to-line and 220V line-to-neutral.