19SHT 202

Overview

The Sifam Tinsley Instrumentation Inc 19SHT 202 is an AC current transformer designed for panel mounting applications. It features a solid core construction with a primary current rating of 2000 A and a secondary nominal current of 5 A. The device provides a sensing window diameter of 4.25 inches (approximately 108 mm) to accommodate busbars or cables. It operates within a frequency range of 50 Hz to 400 Hz and maintains an accuracy class of ±1%. The unit is compliant with ANSI standards and RoHS regulations, utilizing an 8-32 terminal stud with nut for electrical connections.

Feature Summary

• Solid core non-invasive design for direct busbar or cable insertion
• ANSI rated performance ensuring compatibility with standard industrial instrumentation
• Wide frequency operational range supporting 50 Hz to 400 Hz systems
• Robust mechanical construction with dedicated terminal stud for secure wiring

Applications

• Industrial power distribution panels requiring high-current monitoring
• Electrical metering systems for primary currents up to 2000 A
• Substation equipment integration for AC current transformation
• Heavy machinery control circuits involving large conductors

Procurement Notes

Verify the specific terminal configuration matches the receiving instrument's input requirements before installation. Confirm that the ambient operating environment remains within the specified thermal limits for the transformer core material. Ensure the primary conductor fits securely within the 4.25-inch aperture without excessive movement that could affect measurement stability. Cross-reference the ANSI compliance markings against local regulatory standards for the intended deployment region.

Selection Notes

Select this model when a robust, ANSI-compliant solution is required for transforming high AC currents in industrial settings. The 2000:5 ratio suits applications where standard 5A secondary instruments are utilized. Consider the physical dimensions of the sensing window to ensure compatibility with existing busbar sizes. The solid core design eliminates the need for complex split-core mechanisms, offering a permanent and stable installation method for fixed electrical infrastructure.

Part Context

This component belongs to the Omega series of current transformers from Sifam Tinsley Instrumentation Inc. The brand specializes in both digital and analog instrumentation solutions for power and energy sectors. The 19SHT 202 represents a traditional analog interface component, providing a reliable secondary signal for panel-mounted ammeters or recorders. It complements the company's broader portfolio of electrical measurement devices used in manufacturing and utility applications.

Replacement Considerations

Direct substitutes must match the 2000:5 ratio, 4.25-inch aperture, and ANSI compliance. Verify terminal type compatibility, as some alternatives may use screw terminals instead of studs. Ensure the replacement supports the same 50-400 Hz frequency range to maintain accuracy across varying grid conditions.