CR7RL-751

Overview

The CR7RL-751 is a commercial grade AC current transformer manufactured by CR Magnetics Inc. It features a donut-style solid core design with a 2.5-inch inner diameter, intended for non-invasive current sensing applications. The device supports an input range of 0 to 750 AAC and provides a corresponding output range of 0 to 5 AAC, establishing a current ratio of 750:5. It operates within a frequency range of 50Hz to 400Hz and utilizes free-hanging in-line mounting. The unit is equipped with two 2-foot fly leads constructed from 16AWG wire for connection purposes.

Feature Summary

• Non-invasive solid core construction for direct conductor insertion
• Commercial grade durability for general industrial use
• Integrated 2-foot 16AWG fly leads for flexible wiring

Applications

• Industrial power monitoring systems
• Electrical panel current measurement
• Motor control circuit analysis

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to ensure compatibility with required current ratings and frequency ranges. Confirm that the physical dimensions, particularly the 2.5-inch inner diameter, accommodate the target conductor size. Ensure the 750:5 ratio aligns with downstream measurement or protection circuit requirements before finalizing procurement orders.

Selection Notes

Select this component when a high-current capacity up to 750A is required for non-invasive monitoring. The 50Hz to 400Hz frequency range suits standard power distribution and variable frequency drive environments. Consider the free-hanging mounting style and lead length for integration into existing electrical assemblies without requiring additional hardware modifications.

Part Context

This model belongs to the CR7RL series of current sense transformers from CR Magnetics Inc., designed for robust commercial applications. The series offers various current ratings, with this specific variant providing a 750A primary rating. It represents a standard solution for isolating and scaling high currents for safe measurement in electrical infrastructure.

Replacement Considerations

Direct substitutes include other models within the CR Magnetics CR7RL family with matching 750A ratings, such as variants differing only in lead length or insulation type. Cross-manufacturer replacements must strictly match the 750:5 ratio, 2.5-inch ID, and 50-400Hz operational bandwidth to maintain system integrity.