2RL-1250

Overview

The Sifam Tinsley Instrumentation Inc model 2RL-1250 is a non-ANSI rated current transformer designed for electrical monitoring applications. It features a window-type construction with a 26.7 mm inner diameter, suitable for free-hanging or in-line installation. The device operates within a frequency range of 50 Hz to 400 Hz and supports a maximum frequency of 400 Hz. It provides a 125:5 current transformation ratio, delivering a secondary output of 5 A from a primary input of 125 A. The unit has a burden rating of 2.5 VA and meets Class 1 accuracy standards. Terminals are configured for wire connections.

Feature Summary

• Window-type design for in-line conductor passage
• Wide frequency operation up to 400 Hz
• Class 1 accuracy classification

Applications

• Electrical current sensing in power distribution systems
• Monitoring circuits operating between 50 Hz and 400 Hz
• Industrial equipment requiring 125 A primary current measurement

Procurement Notes

Verify that the application does not require ANSI certification, as this component is explicitly non-ANSI rated. Confirm the primary current requirement matches the 125 A specification and that the system frequency falls within the 50 Hz to 400 Hz operational range. Ensure the load connected to the secondary terminals does not exceed the 2.5 VA burden rating. Check that the 26.7 mm window diameter accommodates the target conductor size for proper installation.

Selection Notes

Select this model when a non-ANSI rated transformer is acceptable and high-frequency operation up to 400 Hz is necessary. It is appropriate for applications requiring a 125:5 ratio with Class 1 precision. Consider alternative models if ANSI compliance is mandatory or if the required primary current exceeds 125 A. Evaluate the 2.5 VA burden limit against connected metering loads to ensure accurate performance.

Part Context

This component belongs to the Sifam Tinsley instrumentation portfolio, which includes various transformers and meters for industrial and energy sectors. The 2RL-1250 serves as a specialized sensing element for AC current measurement. It complements other products like the OMEGA series and digital meters by providing isolated current data for monitoring systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.