5RL-800

Overview

The Instrument Transformer 5RL-800 is a single-phase current transformer designed for indoor electrical metering applications. It features an 80:5 turns ratio, providing a secondary output of 5 amperes from a primary current up to 800 amps. The unit operates at 60 Hz with a solid core construction and includes a 1.56-inch diameter aperture. It meets a 2% accuracy class and supports a 10 kV basic impulse level.

Feature Summary

• Solid core design for single-phase AC measurement
• Metering accuracy class of 2 percent
• High voltage insulation rating of 10 kV BIL

Applications

• Connection with ammeters for current monitoring
• Integration with wattmeters for power measurement
• Cross-current compensation circuits

Procurement Notes

Verify the specific manufacturer origin, as this model designation appears across multiple suppliers including GE divisions and Crompton. Confirm that the required accuracy class matches your metering requirements, as some variants specify ±1% or ±2%. Ensure the frequency range covers your system's operational needs, typically 50-400 Hz.

Selection Notes

Select this component when a standard 80:5 ratio is required for low-voltage indoor distribution systems. The solid core design simplifies installation around existing busbars or cables without disconnection. Verify that the physical aperture size accommodates the conductor diameter in your specific panel layout.

Part Context

This model belongs to the 5RL series of instrument transformers, widely used in industrial automation and electrical panels. These units are typically distributed through industrial electronics suppliers rather than direct OEM channels. The series provides reliable isolation between high-current primary circuits and sensitive measuring instruments.

Replacement Considerations

The 5RL-801 is a documented substitute offering similar specifications but may vary in exact accuracy tolerance or mounting configuration. Cross-reference the physical dimensions and lead wire lengths before substitution to ensure compatibility with existing panel wiring.