HT84F9AS

Overview

The SolaHD HT84F9AS is a 9 kVA encapsulated automation transformer designed for three-phase power distribution. It features a 208V Delta primary voltage and a 480Y/277VAC secondary output, operating at a standard 60 Hz frequency. The unit utilizes a laminated core construction with shielded windings to minimize electromagnetic interference. Rated for indoor and outdoor use, it meets NEMA Type 3R enclosure standards for environmental protection. The transformer supports a maximum winding temperature of 115 degrees Celsius and includes specific tap configurations for voltage adjustment.

Feature Summary

• Encapsulated construction provides enhanced durability and environmental resistance for industrial settings
• Shielded windings reduce electromagnetic interference to protect sensitive control equipment
• NEMA Type 3R rating ensures protection against rain, sleet, and external ice formation
• Non-ventilated design allows for compact integration into automation panels

Applications

• Industrial automation systems requiring step-up or step-down voltage conversion
• Machine tool control circuits in manufacturing environments
• Power distribution for three-phase control transformers in harsh conditions
• Enclosed electrical panels requiring weather-resistant components

Procurement Notes

Verify the specific primary voltage configuration matches the source power supply, as the HT84F9AS is specified for 208V Delta input. Confirm that the secondary load does not exceed the 9 kVA rating under all operating conditions. Ensure the installation environment complies with NEMA Type 3R requirements for outdoor exposure. Check for any required mounting hardware compatibility with chassis specifications before finalizing the order.

Selection Notes

Select this model when a three-phase transformation from 208V Delta to 480Y/277VAC is required for automation applications. The encapsulated, non-ventilated design is suitable for enclosed spaces where heat dissipation relies on conduction rather than airflow. Consider the physical dimensions of approximately 20 inches wide by 17 inches high for panel layout planning. Verify that the 115-degree Celsius thermal rating aligns with the ambient temperature constraints of the intended installation site.

Part Context

This component belongs to the SolaHD Automation Transformer family, specifically the non-ventilated series. These units are engineered for industrial control applications where reliability and compactness are prioritized over high-capacity ventilation. The HT84F9AS represents a standard encapsulated solution within Emerson's SolaHD product line, focusing on robust performance in controlled environments.

Replacement Considerations

Direct substitutes must match the 9 kVA rating, three-phase configuration, and identical 208V Delta to 480Y/277VAC voltage transformation ratio. Verify that alternative models maintain the same NEMA Type 3R environmental rating and encapsulated construction style. Ensure physical mounting dimensions and terminal configurations are compatible with existing panel infrastructure.