CR8459-2000-N

Overview

The CR8459-2000-N is a revenue-grade current sense transformer manufactured by CR Magnetics Inc. It features a 200 A primary current rating and a 2000:1 turns ratio, designed for high-accuracy alternating current sensing applications. The device operates within a frequency range of 20 Hz to 1 kHz and exhibits a secondary DC resistance of 74 Ohms. Constructed with a solid core for non-invasive installation, it utilizes wire leads for connection and supports free-hanging mounting configurations. This component is part of the CR8400 series and is suitable for precision metering and power monitoring systems requiring reliable isolation and signal integrity.

Feature Summary

• Revenue-grade accuracy for precise energy metering applications
• Non-invasive solid core design for safe current sensing
• High isolation capability with wire lead termination

Applications

• Electricity metering and revenue grade billing systems
• Industrial power quality monitoring
• Motor protection and control circuits

Procurement Notes

Verify the specific datasheet version for exact electrical tolerances and thermal ratings before integration. Confirm that the 200 A primary rating aligns with the maximum expected load current in the target application. Ensure proper insulation coordination is maintained for safety compliance in high-voltage environments. Check for any specific handling requirements regarding the wire leads during assembly.

Selection Notes

Select this model when high-precision AC current measurement is required for commercial or industrial metering. The 2000:1 ratio provides a manageable secondary output for standard analog-to-digital conversion interfaces. Consider the 74 Ohm secondary impedance when designing the burden resistor network to ensure accurate signal transfer across the specified 20 Hz to 1 kHz bandwidth without excessive phase shift.

Part Context

This component belongs to the CR8400 series from CR Magnetics Inc., which specializes in high-performance current transformers. The series is engineered for demanding applications where accuracy and reliability are critical. The CR8459-2000-N specifically addresses the need for robust, non-invasive sensing in high-current scenarios, leveraging the manufacturer's expertise in magnetic component design for power electronics and grid infrastructure.

Replacement Considerations

Direct substitutes may include other CR Magnetics models within the CR8400 series with compatible current ratios and physical dimensions. Verify that alternative parts meet the same revenue-grade accuracy standards and frequency response characteristics. Cross-reference pinout and lead configuration to ensure mechanical compatibility if space constraints exist.