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High accuracy split core AC current sensor LEM TT 50-SD with isolated plastic case and 8 mm aperture

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High accuracy split core AC current sensor LEM TT 50-SD with isolated plastic case and 8 mm aperture

Product Overview

The LEM TT 50-SD is a split-core AC current transformer designed for the electronic measurement of AC waveform currents. It provides galvanic isolation between the primary and secondary circuits, making it suitable for applications requiring accurate current measurement and monitoring. Key features include a 8 mm sensing aperture, cable output, and an isolated plastic case recognized according to UL 94-V0. This transducer offers high accuracy, low phase shift, and high isolation, making it a cost-effective and easy-to-install solution for energy and automation sectors. Applications include power meters, energy sub-meters, power quality monitoring, condition monitoring of motor loads, and distributed measurement systems.

Product Attributes

  • Brand: LEM
  • Model: TT 50-SD
  • Type: Split core transducer
  • Sensing Aperture: 8 mm
  • Output: Cable (1m)
  • Case Material: Isolated plastic case recognized according to UL 94-V0
  • Protection Degree: IP40
  • Certifications: IEC 61010-1 standards (Reinforced isolation, CAT III, PD2)

Technical Specifications

ParameterValueUnit
Primary nominal current (rms) (IPN)50A
Output current (IOUT)16.66mA
Output clamping voltage (VSZ)7.5V
Overload capability - continuous100A
Overload capability - 1 min1200A
Overall accuracy @ IPN, TA = 25C< 1%
Linearity error (L)0.1%
Temperature coefficient of IOUT (TCIOUT)60ppm/K
Phase shift ()1.5 1
Frequency bandwidth (BW) ( 1dB)50/60Hz
Ambient operating temperature (TA)-25 .. +70C
Ambient storage temperature (TS)-30 .. +90C
Mass (m)80g
Rated isolation voltage rms (Vb) 1)300V
Rms voltage for AC isolation test (Vd), 50Hz, 1min3.5kV
Impulse withstand voltage (Vw) 1.2/50ms6.5kV
Creepage distance (dCp)6m
Clearance distance (dCl)6m
Comparative tracking index (CTI) (Group I)600
Primary aperture diameter8mm
Output cable length1000mm
General tolerance1mm

2411220608_LEM-TT-50-SD_C5807419.pdf

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