VTX-146-225-218

Overview

The Vigortronix VTX-146-225-218 is a high-quality open-style toroidal transformer with a power rating of 225VA. It features dual primary and dual secondary windings, supporting input voltages of 115V and 230V. The unit provides two isolated secondary outputs of 18VAC each, resulting in a nominal secondary current of 6.3A per winding. It holds UL approval and complies with RoHS standards. The dielectric strength is rated at 4200 Vrms. The package includes a mounting kit consisting of rubber pads, nuts, bolts, washers, and a clamp plate for secure installation.

Feature Summary

• Dual primary and dual secondary winding configuration for flexible voltage input and output options
• UL approved construction ensuring compliance with safety standards
• High dielectric strength of 4200 Vrms for enhanced electrical isolation
• RoHS compliant manufacturing process

Applications

• Power supply units requiring dual isolated AC outputs
• Audio equipment amplifiers utilizing split-rail power architectures
• Industrial control systems needing robust toroidal isolation
• Test and measurement instrumentation power stages

Procurement Notes

Verify the specific voltage requirements against the dual primary design (115V/230V) before integration. Confirm that the 225VA rating meets the thermal and load demands of the target application. Ensure the physical dimensions accommodate the open toroidal form factor and that the included mounting hardware suits the chassis design. Check for any updated regulatory certifications if operating in restricted regions.

Selection Notes

Select this component when dual isolated secondary voltages are required from a single core. The 225VA capacity supports moderate to high current loads compared to smaller variants in the VTX-146 series. Consider the open style for applications where external cooling or custom encapsulation is planned. Verify that the 18VAC output aligns with downstream rectification or regulation needs.

Part Context

This model belongs to the Vigortronix VTX-146 series of toroidal transformers. The series offers various power ratings and voltage configurations. The VTX-146-225-218 specifically denotes the 225VA variant with 2x18VAC outputs. Other models in the series include lower wattage options like 15VA or different voltage taps such as 9VAC equivalents.

Replacement Considerations

Consult cross-reference tools for parametrically similar parts. Ensure substitutes match the 225VA rating, 2x18VAC output, and dual primary/dual secondary topology. Verify physical footprint compatibility and mounting hole patterns. Confirm equivalent dielectric strength and UL/RoHS status for direct replacement.