MODEL 19

Current Sense Transformers Overview

The CR Magnetics Model 19 is a general-purpose wire lead current transformer featuring a solid core design with a 0.29-inch inner diameter and 235 turns. It provides non-contact, isolated measurement of AC currents up to 25 Arms maximum input, with a continuous primary current rating of 4 times the rated current (IR). The device operates within a frequency bandwidth of 50 Hz to 1 kHz and withstands an insulation voltage of 3500 VAC for one minute. Encased in black thermoplastic with epoxy encapsulation, it delivers a proportional voltage output across a resistive burden, suitable for remote monitoring and control system inputs.

Current Sense Transformers Feature Summary

• Non-contact, isolated measurement capability via solid core design
• Epoxy encapsulated construction for ruggedness and environmental protection
• Proportional voltage output relative to AC input current

Current Sense Transformers Applications

• Remote monitoring of electrical loads
• Input to electrical control systems
• Detection of open heater elements
• Indication of phase loss
• Monitoring of motor operation

Current Sense Transformers Procurement Notes

Verify the specific part number against official manufacturer documentation to ensure compatibility with required current ratings and physical dimensions. Confirm that the 0.29-inch opening accommodates the target conductor size. Check for updated datasheets regarding insulation voltage and frequency response limits to ensure compliance with safety standards and application requirements before finalizing procurement.

Current Sense Transformers Selection Notes

Select this component when a low-cost, non-invasive solution for AC current sensing is required. Ensure the primary current does not exceed 25 Arms and the operating frequency falls between 50 Hz and 1 kHz. Verify that the 3500 VAC insulation rating meets the system's isolation requirements. Consider the 0.29-inch aperture size to confirm fitment around the current-carrying wire without modification.

Current Sense Transformers Part Context

The Model 19 belongs to CR Magnetics' line of rugged wire lead current transformers designed for versatile industrial applications. It complements other models like the Model 18, which supports higher current ratings. The series is characterized by its simple installation around existing wiring and reliable performance in monitoring and control environments.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided data. Consult manufacturer guidelines for cross-referencing alternatives based on specific current and voltage requirements.

Current Sense Transformers FAQ

What is the maximum continuous primary current rating for the Model 19?

The maximum continuous primary current is 4 times the rated current (IR), with a maximum input current range of 25 Arms.

Does the Model 19 provide galvanic isolation?

Yes, it offers non-contact, isolated measurement with an insulation voltage rating of 3500 VAC for one minute.