7SFT-401

Current Sense Transformers Overview

The Sifam Tinsley Instrumentation Inc. model 7SFT-401 is a non-ANSI rated current sense transformer designed for panel mounting applications. It features a window-type construction with a 63.5 mm internal diameter, suitable for accommodating primary conductors of specific dimensions. The device provides a standard 400:5 turns ratio, converting high primary currents into a manageable secondary output for measurement instrumentation. It operates within a frequency range of 50Hz to 400Hz and supports a maximum burden of 15 VA. The unit is classified as Class 1 accuracy, ensuring reliable performance in industrial electrical monitoring systems.

Current Sense Transformers Feature Summary

• Window-type design facilitates easy installation around existing busbars or cables without disconnection
• Robust panel mount configuration ensures secure positioning in control panels and switchgear
• Class 1 accuracy rating provides precise current sensing for metering and protection circuits

Current Sense Transformers Applications

• Industrial power distribution monitoring systems
• Electrical panel metering and instrumentation integration
• Current sensing for protective relay inputs
• Energy management system data acquisition

Current Sense Transformers Procurement Notes

Verify the required accuracy class and burden capacity against your specific metering requirements before ordering. Confirm that the primary conductor size fits within the 63.5 mm window opening. Ensure the operating frequency aligns with your system's 50Hz to 400Hz specification. Check if ANSI compliance is necessary, as this model is explicitly non-ANSI rated. Validate mounting hole patterns for panel integration compatibility.

Current Sense Transformers Selection Notes

Select this component when a non-ANSI rated transformer with a 400:5 ratio is required for frequencies up to 400Hz. Consider the 15 VA burden limit to ensure connected instruments do not exceed specifications. Evaluate the 63.5 mm window size against available cable diameters. This model is suitable for general industrial applications where strict ANSI certification is not mandated but reliable Class 1 performance is essential.

Current Sense Transformers Part Context

The 7SFT series represents Sifam Tinsley's line of current sense transformers engineered for robust industrial environments. These units are typically used in conjunction with analog or digital panel meters to monitor AC current levels. The 7SFT-401 specifically addresses applications requiring a 400A primary current transformation down to 5A secondary output, fitting within the broader portfolio of precision electrical measurement components offered by the manufacturer.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 400:5 ratio, 63.5 mm window size, and Class 1 accuracy. Verify frequency range compatibility (50Hz-400Hz) and 15 VA burden rating. Non-ANSI designation may require alternative models if regulatory compliance is strictly enforced.