RL-2250-30-20

Power Transformers Overview

The RL-2250-30-20 is a 30VA power transformer from the ALL/TRAN series by Renco Electronics Inc. It features a dual primary rated for 115V, configurable in parallel (10V) or series (20V). The secondary provides a single 20V output with center tap, delivering 3A in parallel configuration and 1.5A in series. Designed for through-hole mounting, it measures 2.85 x 1.93 x 2.37 inches. The unit operates between -40°C and +130°C and includes UL, CSA, VDE, and IEC certifications.

Power Transformers Feature Summary

• Configurable dual primary winding supports parallel or series connection for flexible input voltage compatibility.
• Center-tapped secondary design enables versatile output configurations for different circuit requirements.
• Shrouded construction minimizes interwinding capacitance, reducing the need for additional electrostatic shielding.

Power Transformers Applications

• Industrial control systems requiring isolated power supplies
• Medical equipment needing certified safety isolation
• General purpose AC to DC power conversion circuits

Power Transformers Procurement Notes

Verify that the specific order matches the required primary voltage configuration (parallel vs. series) as this affects the input rating. Confirm that the physical dimensions fit the intended chassis or PCB layout. Ensure the application environment stays within the specified operating temperature range of -40°C to +130°C. Check for any specific regional certification requirements beyond the standard UL, CSA, VDE, and IEC listings provided.

Power Transformers Selection Notes

Select this component when a 30VA capacity is needed with a 20V center-tapped secondary. The dual primary allows adaptation to different mains voltages via wiring changes rather than part substitution. Consider the through-hole mounting style and physical size constraints. This model is suitable where high insulation voltage and low capacitance are critical for signal integrity or safety compliance.

Power Transformers Part Context

This transformer belongs to the RL-2250 series, designed as a general-purpose laminated power transformer. It is part of Renco's ALL/TRAN line, which emphasizes safety compliance and versatility. The series typically serves applications requiring robust isolation and standardized form factors for easy integration into various electronic assemblies.

Power Transformers Replacement Considerations

Direct substitutes must match the 30VA rating, 20V CT secondary, and dual primary configuration. Verify pinout compatibility and physical dimensions to ensure mechanical fit. Alternative models from the same series may offer different voltage ratings but require circuit redesign if electrical parameters differ significantly.

Power Transformers FAQ

Can the primary windings be connected in both parallel and series?

Yes, the dual primary windings are designed to be connected in parallel for lower voltage input or in series for higher voltage input, providing flexibility for different mains standards.

What is the insulation voltage rating of this transformer?

The transformer is hipot tested at 4000 VRMS for 60 Hz over 2 seconds between windings and from windings to core, ensuring high isolation capability.