RL-7747-1000

Current Sense Transformers Overview

The RL-7747-1000 is a current sense transformer manufactured by Renco Electronics, Inc. It features a 1:1000 current ratio and supports frequencies from 47Hz to 400Hz. The component has a primary resistance of 0.3mOhm and a secondary resistance of 86mOhm. It is designed for through-hole mounting and offers a maximum voltage rating of 300V.

Current Sense Transformers Feature Summary

• Provides accurate current sensing with a fixed 1:1000 transformation ratio
• Operates within a frequency range of 47Hz to 400Hz
• Constructed for reliable through-hole PCB integration

Current Sense Transformers Applications

• Current monitoring in power supply circuits
• Feedback control systems in industrial electronics
• Overcurrent protection mechanisms

Current Sense Transformers Procurement Notes

Verify the specific suffix requirements when ordering, as variants like RL-7747-1000-F exist with different thermal classifications. Confirm that the 300V rating aligns with your circuit's peak voltage demands. Ensure the through-hole package dimensions fit your board layout constraints before finalizing procurement.

Current Sense Transformers Selection Notes

Select this model when a precise 1:1000 step-down ratio is required for low-frequency applications up to 400Hz. Consider the 0.3mOhm primary resistance for minimal insertion loss. Evaluate the 86mOhm secondary impedance against your burden resistor design to ensure proper signal conditioning without excessive loading.

Current Sense Transformers Part Context

This component belongs to the RL-7747 series of current sense transformers from Renco Electronics. The series includes variants with different ratios and thermal ratings, such as the RL-7747-500. This specific part number denotes the 1000:1 ratio variant within the standard product line.

Current Sense Transformers Replacement Considerations

Direct substitutes include other models within the RL-7747 family, such as the RL-7747-500, though the current ratio differs. Verify compatibility with existing thermal management requirements if selecting alternative suffixes like the -F version.