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Closed loop Hall effect current sensor LEM LT308-S7 SP1 for accurate DC AC pulse current measurement

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Closed loop Hall effect current sensor LEM LT308-S7 SP1 for accurate DC AC pulse current measurement

working temperature : -10℃~+70℃

Current Range : ±500A

Voltage - Supply : -15V~-12V;12V~15V

Band Width : 100kHz

Bidirectional Current Detection : Support

Description : ±500A Current Sensors RoHS

Mfr. Part # : LT308-S7/SP1

Model Number : LT308-S7/SP1

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Product Overview

The LEM LT 308-S7 is a closed-loop Hall effect current sensor designed for measuring DC, AC, and pulse currents. It provides electrical isolation between the primary and secondary sides, offering excellent accuracy, linearity, low temperature drift, fast response time, wide bandwidth, no insertion loss, and high immunity to external disturbances, making it suitable for various industrial applications.

Product Attributes

  • Brand: LEM
  • Certifications: EN 50178, IEC 61010-1, UL 94-V0 (insulating case)
  • Origin: Shanghai Jaren (for socket)

Technical Specifications

Parameter Description Value Notes
Electrical Parameters Primary nominal RMS current (IPN) 300 A
Primary current, measuring range (IPM) 0 .. 500 A
Secondary nominal RMS current (ISN) 150 mA
Conversion ratio (KN) 1 : 2000
Supply voltage (VC) ( 5 %) 12 .. 15 V
Accuracy Total accuracy @ IPN, TA = 25C (XG) 0.5 %
Linearity (L) < 0.1 % Typ
Electrical offset current @ IP = 0, TA = 25C (IOE) 0.20 mA Max
Magnetic offset current (IOM) 0.20 mA @ IP = 0, overload through 3 x IPN
Temperature drift of IO (IOT) (- 10C .. + 70C) 0.20 .. 0.64 mA
Dynamic Parameters Response time to 10% of IPN (tra) < 500 ns
Response time to 90% of IPN (tr) < 1 s @ 100 A/s di/dt
di/dt following accuracy > 100 A/s
Bandwidth (- 3 dB) (BW) DC .. 100 kHz
Measurement resistance (RM) 0 .. 30 with 12 V @ 300 A max
0 .. 7 with 12 V @ 500 A max
0 .. 43 with 15 V @ 300 A max
0 .. 17 with 15 V @ 500 A max
Environmental Parameters Ambient operating temperature (TA) - 10 .. + 70 C
Ambient storage temperature (TS) - 25 .. + 80 C
Secondary coil resistance @ TA = 70C (RS) 21
Isolation Performance AC isolation test voltage (Vd) 3.52 kV RMS, 50 Hz, 1 minute, primary to secondary
Impulse withstand voltage (Vw) 6.5 kV 1.2/50 s
Creepage distance (dCp) 10 mm
Clearance distance (dCI) 6 mm
Comparative tracking index (CTI) 275 (group IIIa)
General Mass 79 g
Dimensions See diagram (in mm)

Advantages

  • Excellent accuracy
  • Good linearity
  • Low temperature drift
  • Optimal response time
  • Wide bandwidth
  • No insertion loss
  • Strong immunity to interference
  • Current overload capability

Application Scenarios

  • AC variable speed drives, servo motors
  • DC motor traction static converters
  • Battery power supplies
  • Uninterruptible Power Supplies (UPS)
  • Switch Mode Power Supplies (SMPS)
  • Welding power supplies
  • Industrial applications

2508141725_LEM-LT308-S7-SP1_C5891291.pdf


Cheap Closed loop Hall effect current sensor LEM LT308-S7 SP1 for accurate DC AC pulse current measurement for sale

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