CRZ8445-1K5W

Overview

The CRZ8445-1K5W is a zero sequence current transformer manufactured by CR Magnetics Inc. It features a 1:1000:5 current ratio and operates within a frequency range of 50Hz to 60Hz. The secondary winding presents an impedance of 55 Ohms. This component utilizes a free-hanging in-line mounting style, designed for non-invasive current sensing applications in power distribution systems.

Feature Summary

• Zero sequence current detection capability
• Free-hanging in-line mechanical configuration
• Non-invasive solid core design

Applications

• Ground fault protection circuits
• Unbalanced load monitoring
• Power quality analysis systems

Procurement Notes

Verify the specific datasheet version with the manufacturer or authorized distributor before procurement. Confirm that the 55 Ohm secondary impedance matches the connected burden requirements. Ensure the physical dimensions accommodate the intended in-line installation space. Check RoHS compliance status if required by project specifications.

Selection Notes

Select this component when zero sequence current measurement is required at standard power frequencies. The 1:1000:5 ratio suits applications needing precise ground fault indication. The in-line form factor allows integration into existing busbar arrangements without structural modification. Consider thermal limits and insulation ratings relative to the operating environment.

Part Context

This part belongs to the CR Magnetics current sense transformer portfolio. It serves as a specialized sensor for detecting residual currents in three-phase systems. The design supports industrial electrical safety standards by providing accurate isolation between high-voltage conductors and low-voltage measurement circuits.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.