Hall effect current sensor LEM LT108-S7SP12 designed for precise DC AC and pulse current measurement

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Product Description

Product Overview

The LEM LT 108-S7/SP12 is a closed-loop (compensated) current sensor utilizing Hall effect technology. It is designed for measuring DC, AC, and pulse currents with galvanic isolation between the primary and secondary sides. The sensor offers excellent accuracy, good linearity, low temperature drift, and a wide bandwidth, making it suitable for various industrial applications.

Product Attributes

Brand: LEM
Certifications: UL 94-V0, EN 50178, IEC 61010-1
Material: Insulated housing
Origin: Not specified
Color: Not specified

Technical Specifications

Parameter	Value	Unit	Notes
Primary Current (IPN)
Rated RMS Primary Current	100	A
Measuring Range	0 .. 150	A
Secondary Current (ISN)
Rated RMS Secondary Current	50	mA
Conversion Ratio (KN)
Ratio	1 : 2000
Power Supply (VC)
Voltage	12 .. 15	V	( 5 %)
Current Consumption	28 (@ 12V) + IS	mA
Accuracy
Total Accuracy @ IPN, TA = 25C	0.6	%
Linearity	< 0.1	%	Typ
Electrical Offset Current @ IP = 0, TA = 25C	0.15	mA
Magnetic Offset Current @ IP = 0, overload 3 x IPN	0.10	mA	1)
Temperature Drift of IOE (-10C .. +70C)	0.20 0.64	mA
Dynamic Parameters
Response Time to 10% of IPN	< 500	ns
Response Time to 90% of IPN	< 1	s	2)
di/dt Follower Accuracy	> 100	A/s
Bandwidth (- 3 dB)	DC .. 100	kHz
General Parameters
Ambient Operating Temperature	- 10 .. + 70	C
Ambient Storage Temperature	- 25 .. + 80	C
Secondary Coil Resistance @ TA = 70C	32
Mass	73	g
Electrical Strength
AC Isolation Test Voltage RMS (50 Hz, 1 min)	3.52	kV	1)
Impulse Withstand Voltage (1.2/50 s)	6.5	kV
Minimum Creepage Distance (dCp)	10	mm	2)
Minimum Clearance Distance (dCl)	6	mm	3)
Comparative Tracking Index (CTI) (Group III a)	275
Mechanical Dimensions (mm)
Primary Through-Hole Diameter	20	mm
Mounting Holes	2 holes 5.4 mm