1300

Overview

The Simpson Electric 1300 is a donut-type current transformer designed for use with ammeter shunts or panel meters. It provides electrical isolation between the primary circuit and the measuring instrument. The device features a split-core design, allowing installation around existing conductors without disconnecting the power line. It steps down high primary currents to a standardized low secondary output suitable for standard 5-ampere metering equipment.

Feature Summary

• Split-core construction enables non-intrusive installation on live busbars or cables
• Provides galvanic isolation between high-voltage primary circuits and low-voltage measurement devices
• Standardized secondary output compatible with standard 5A panel ammeters

Applications

• Integration with analog or digital panel ammeters in industrial switchgear
• Monitoring current flow in existing electrical distribution panels
• Energy monitoring systems requiring isolated current sensing

Procurement Notes

Verify that the specific model number corresponds to the required primary-to-secondary ratio (e.g., 300/5 Amps) before ordering. Confirm that the physical aperture of the donut core accommodates the diameter of the conductor being monitored. Ensure compatibility with the connected meter's input impedance requirements. Check for any regional compliance certifications required for the installation environment.

Selection Notes

Select this component based on the maximum continuous primary current expected in the circuit. The transformer must handle the thermal load of the primary conductor without saturation. Consider the accuracy class required for the application, as split-core transformers may have different precision levels compared to solid-core variants. Ensure the secondary wiring length does not exceed limits that would introduce significant burden errors.

Part Context

This component belongs to the Simpson Electric family of test and measurement accessories. It serves as a passive interface device, bridging high-current power lines with sensitive measurement instruments. Unlike active sensors, it relies on electromagnetic induction, requiring no external power supply for its operation within the measurement loop.