DP-241-7-28L

Overview

The Signal Transformer DP-241-7-28L is a single-phase laminated core power transformer rated at 56 VA. It features dual primary windings supporting 115 VAC and 230 VAC inputs, with a single secondary winding providing 28 VCT output at 2.0 A maximum current. Designed for chassis mounting via wire leads, the unit operates within a frequency range of 50/60 Hz and withstands an isolation voltage of 2500 Vrms. The component functions reliably across an ambient temperature range of -40°C to +105°C.

Feature Summary

• Dual primary winding configuration enables flexible input voltage selection between 115 VAC and 230 VAC.
• Single secondary winding delivers center-tapped output suitable for full-wave rectification circuits.
• Robust laminated core construction ensures efficient magnetic coupling and thermal stability.
• Chassis mount design with wire lead termination facilitates secure integration into industrial enclosures.

Applications

• Industrial machinery power supply units
• Electrical equipment control panels
• Power transmission and distribution systems

Procurement Notes

Verify that the specific order matches the DP-241-7-28L designation to ensure correct 56 VA rating and 28 VCT output. Confirm wire lead termination style compatibility with existing harnesses. Check RoHS compliance status if required by project specifications. Ensure chassis mounting space accommodates physical dimensions. Validate operating temperature requirements against the -40°C to +105°C range before finalizing procurement.

Selection Notes

Select this model when a 56 VA capacity is required for converting standard line voltages to a 28 VCT level. The dual primary feature makes it suitable for global deployment where input voltage standards vary. Consider the wire lead termination if PCB mounting is not feasible or if direct wiring to terminal blocks is preferred. The high operating temperature rating supports use in enclosed environments with limited airflow.

Part Context

This component belongs to the DP series of laminated core transformers manufactured by Signal Transformer. The series typically offers various power ratings and voltage configurations tailored for industrial applications. The DP-241-7-28L specifically addresses needs for moderate power conversion with center-tapped outputs, distinguishing it from lower-power surface-mount variants or higher-power heavy-duty models within the broader product family.

Replacement Considerations

Direct substitutes must match the 56 VA rating, 115/230 VAC primary, 28 VCT secondary, and wire lead termination. Verify physical footprint and mounting hole patterns to ensure interchangeability without modifying chassis structures. Cross-reference electrical parameters such as isolation voltage and operating temperature to maintain system safety and reliability standards.

FAQ

What is the isolation voltage rating of the DP-241-7-28L?

The transformer provides an isolation voltage of 2500 Vrms between windings.

Can this transformer operate on both 50 Hz and 60 Hz frequencies?

Yes, the DP-241-7-28L is designed to operate effectively at both 50 Hz and 60 Hz input frequencies.