2DRL-121

Overview

The Sifam Tinsley Instrumentation Inc. model 2DRL-121 is an Omega series current transformer designed for high-current measurement applications. It features a donut-style core with a 1.05-inch inner diameter and includes 24-inch leads for connection. The device operates with a primary-to-secondary current ratio of 120:5, converting up to 30A primary current into a standard 5A secondary output. This configuration allows for safe interfacing with panel meters or protective relays in industrial electrical systems.

Feature Summary

• Donut-type core design facilitates installation around existing busbars or cables without circuit interruption
• Standardized 120:5 current ratio ensures compatibility with common 5A secondary instrumentation
• Integrated 24-inch leads provide flexible wiring options for panel mounting connections

Applications

• Industrial power distribution monitoring
• Electrical panel metering integration
• Protective relay input conditioning

Procurement Notes

Verify the specific lead length and inner diameter requirements against your installation constraints before ordering. Confirm that the 120:5 ratio aligns with your downstream metering equipment specifications. Ensure the primary current rating of 30A matches the maximum expected load in your circuit to prevent saturation or accuracy degradation during peak operations.

Selection Notes

Select this model when a non-invasive current sensing solution is required for circuits carrying up to 30A. The donut form factor is ideal for retrofitting existing installations where breaking the conductor is not feasible. Consider the 24-inch lead length as a limiting factor for routing distance; longer runs may require signal amplification or different cable configurations to maintain measurement integrity over distance.

Part Context

This component belongs to the Omega series of current transformers from Sifam Tinsley, which are engineered for precision electrical measurement. The series typically adheres to ANSI standards, ensuring reliability in North American industrial environments. These devices are part of a broader portfolio that includes various ratios and core sizes to accommodate diverse current levels and physical space constraints in electrical switchgear.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.