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Product Detailed Parameters
- Description：CURR SENSE XFMR
- Series：TT
- Mfr：LEM USA Inc.
- Package：Bulk
- Frequency Range：50/60Hz
- Type：Non-Invasive (Split Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：-
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：-
- Size / Dimension：1.280" L x 0.925" W (32.50mm x 23.50mm)
- Height - Seated (Max)：1.693" (43.00mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：-
- Current Rating (Amps)：-
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Overview
The LEM TT 50-SD is a split-core current transformer designed for the electronic measurement of AC waveform currents. It operates at 50Hz and 60Hz frequencies, providing galvanic isolation between primary and secondary circuits. The device features an 8mm maximum conductor diameter bore and delivers a current output with a ratio of 0.333 mA/A. Its physical dimensions are 1.280 inches in length, 0.925 inches in width, and a maximum seated height of 1.693 inches.
Feature Summary
- Split-core design allows for non-invasive installation around existing conductors without circuit interruption.
- Provides galvanic insulation between primary and secondary circuits to ensure safety and signal integrity.
- Engineered for high accuracy and low phase shift during AC current measurement.
Applications
- Electronic measurement of AC waveform currents
- Current sensing in power monitoring systems
- Galvanically isolated current feedback applications
Procurement Notes
Verify that the required bore size matches the 8mm conductor diameter specification for this specific model. Confirm the operating frequency aligns with your system's 50Hz or 60Hz requirements. Ensure the output ratio of 0.333 mA/A is compatible with your downstream signal conditioning electronics. Check datasheet details for mounting constraints related to the specified physical dimensions.
Selection Notes
Select the TT 50-SD when non-invasive access to the primary conductor is necessary. This model is suitable for measuring AC currents up to 100A with high accuracy. Consider the 8mm bore limit when choosing cable sizes. The split-core architecture simplifies retrofitting into existing electrical panels compared to solid-core alternatives.
Part Context
This component belongs to the LEM TT Series of current transformers. These devices are part of LEM's portfolio for energy and mobility solutions, focusing on reliable electrical measurement. The series includes variants like the TT100-SD, which offers different bore sizes, but the TT 50-SD is specifically optimized for smaller conductor diameters.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing mounting hardware and signal processing circuits before considering alternative models from other manufacturers.
