CR7ARL-251

Current Sense Transformers Overview

The CR7ARL-251 is an AC current transformer manufactured by CR Magnetics Inc., designed for commercial and ANSI metering class applications. It features a donut-style core with a 2.5-inch inner diameter, accommodating conductors up to 250 AAC input range. The device provides a proportional output of 0-5 AAC, suitable for integration with standard metering instruments. Constructed with free-hanging in-line mounting capabilities, it operates within a frequency range of 50Hz to 400Hz. The unit includes two feet of 16AWG fly leads for straightforward electrical connection.

Current Sense Transformers Feature Summary

• ANSI metering class accuracy for precise energy measurement
• Donut style design allowing easy installation around existing busbars or cables
• Wide frequency operation supporting 50Hz to 400Hz systems
• Integrated wire leads for simplified circuit integration

Current Sense Transformers Applications

• Commercial power distribution metering panels
• Industrial energy monitoring systems
• Utility revenue-grade billing applications
• Electrical load balancing and analysis equipment

Current Sense Transformers Procurement Notes

Verify the specific ordering suffix to ensure compliance with required insulation ratings and lead configurations. Confirm that the inner diameter matches the primary conductor size to prevent air gaps affecting accuracy. Check for RoHS compliance status if environmental regulations apply. Ensure the input current rating aligns with the maximum expected load to avoid saturation. Validate the output specification against the connected metering device requirements.

Current Sense Transformers Selection Notes

Select this model when high-accuracy ANSI metering is required for AC currents up to 250A. Consider the 2.5-inch ID for larger gauge conductors or multiple cable bundles. Evaluate the 50-400Hz range suitability for variable frequency drives or standard utility frequencies. Compare physical dimensions against panel space constraints. Assess the need for fly leads versus other termination styles based on assembly methods.

Current Sense Transformers Part Context

This component belongs to the CR Magnetics AC current transformer series, specifically engineered for metering applications. It complements other models like the CR5ARL-251 and CR2RL-251, offering distinct advantages in accuracy class and physical form factor. The series supports various industrial and commercial needs, providing reliable current sensing solutions for power management infrastructure.

Current Sense Transformers Replacement Considerations

Direct substitutes include the CR5ARL-251, which shares similar electrical characteristics but may differ in physical dimensions or specific ANSI certification details. Verify compatibility with existing mounting hardware and wiring configurations before swapping. Cross-reference technical datasheets to ensure identical input/output ratios and frequency responses.