Skip to main content
Skip table of contents

Step-Down Transformer (480 Vac to 240 V)

The AES Cabinet may require a 208-240 Vac single-phase supply for its auxiliary AC input, which powers the control system (maintaining UPS functionality) and the Thermal Management System (TMS). If a 208–240 V single-phase supply is unavailable, a 5 kVA (or larger) single-phase step-down transformer with a 480 V primary and 240 V secondary can be used. This transformer converts 480 Vac from the inverter to 240 Vac, ensuring proper operation of the battery auxiliary input and TMS.

image-20241206-145042.png

Example Step-Down Transformer (480 Vac to 240 Vac)

NOTE

Installation Instructions (for reference): The transformer’s installation manual is the primary resource for installation guidance.

NOTE

Operational Considerations

For continuous off-grid operation wire the AC input to provide continuous power to auxiliary components, such as the TMS, even when grid or generator power is unavailable.

NOTE

AC System Compatibility

For installations using a 120/208 three-phase or a single-phase 120/240 setup, a transformer may not be required. The TMS and UPS can operate within an AC input range of 200 to 276 Vac. Therefore a single-phase input of either 208 or 240 V can be utilized.

NOTE

Operational Considerations

A single larger transformer can support multiple battery cabinets at the same site. To meet the system's power requirements, ensure the transformer has a load capacity of at least 5 kVA per cabinet.

JavaScript errors detected

Please note, these errors can depend on your browser setup.

If this problem persists, please contact our support.