Industrial Hall Effect Current Transducer LEM LT108-S7SP1 for Precise Electronic Current Measurement

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Product Description

Product Overview

The LEM Current Transducer LT 108-S7/SP1 is a closed-loop Hall effect transducer designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation. It offers excellent accuracy, very good linearity, low temperature drift, optimized response time, and a wide frequency bandwidth, making it suitable for various industrial applications including AC and DC motor drives, UPS, SMPS, and welding power supplies.

Product Attributes

Brand: LEM
Model: LT 108-S7/SP1
Case Material: Isolated plastic case recognized according to UL 94-V0
Secondary Connection: Socket JTB450-00
Certifications: EN 50178, IEC 61010-1, UL 94-V0
Application Domain: Industrial

Technical Specifications

Parameter	Value	Unit	Notes
Primary nominal current rms (IPN)	100	A
Primary current, measuring range	0 .. 150	A
Measuring resistance (RM) with 12 V	0 .. 136		@ 100 A max
Measuring resistance (RM) with 12 V	0 .. 74		@ 150 A max
Measuring resistance (RM) with 15 V	0 .. 175		@ 100 A max
Measuring resistance (RM) with 15 V	0 .. 106		@ 150 A max
Secondary nominal current rms (ISN)	50	mA
Conversion ratio (KN)	1 : 2000
Supply voltage (VC) ( 5 %)	12 .. 15	V
Current consumption (IC)	20 (+ IS)	mA	(@ 15 V)
Overall accuracy @ IPN, TA = 25C (XG)	0.6	%
Linearity error (L)		%	Typ
Electrical offset current (IOE) @ IP = 0, TA = 25C	0.15	mA
Magnetic offset current (IOM) @ IP = 0, and specified RM, after an overload of 3 x IPN	0.10	mA	1)
Temperature variation of IO (IOT) - 10C .. + 70C	0.20 / 0.64	mA	Typ / Max
Reaction time to 10 % of IPN step (tra)		ns
Response time to 90 % of IPN step (tr)		s	2)
di/dt accurately followed (di/dt)	> 100	A/s
Frequency bandwidth (- 3 dB) (BW)	DC .. 100	kHz
Ambient operating temperature (TA)	- 10 .. + 70	C
Ambient storage temperature (TS)	- 25 .. + 80	C
Secondary coil resistance @ TA = 70C (RS)	32
Mass	76	g
Rms voltage for AC insulation test (Vd) 50 Hz, 1 min	3.52	kV	1)
Impulse withstand voltage (Vw) 1.2/50 s	6.5	kV
Creepage distance (dCp) 2)	10	mm
Clearance (dCI) 2)	6	mm
Comparative Tracking Index (CTI) (group IIIa)	275