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LEM LT208-S7SP1 insulated current sensor designed for SMPS UPS and variable speed drive applications

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LEM LT208-S7SP1 insulated current sensor designed for SMPS UPS and variable speed drive applications

working temperature : -10℃~+70℃

Current Range : ±300A

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

Band Width : 100kHz

Response Time (tr) : 1us

Bidirectional Current Detection : Support

Description : ±300A Current Sensors RoHS

Mfr. Part # : LT208-S7/SP1

Model Number : LT208-S7/SP1

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Product Overview

The LEM LT 208-S7/SP1 is an insulated current sensor designed for measuring DC, AC, and pulse currents. It utilizes Hall effect technology in a closed-loop (compensated) system, offering excellent accuracy, linearity, low temperature drift, and fast response times. Its design features an insulated housing compliant with UL 94-V0 standards, providing strong interference immunity and current overload capability. This sensor is suitable for various industrial applications including variable speed drives, DC motor traction, battery power, UPS, SMPS, and welding power supplies.

Product Attributes

Brand: LEM
Certifications: EN 50178, UL 94-V0
Origin: Not specified
Material: Not specified
Color: Not specified

Technical Specifications

Parameter	Value	Unit	Notes
Product Name	LT 208-S7/SP1		Current Sensor
Primary Rated RMS Current (IPN)	200	A
Primary Current Measuring Range (IPM)	0 .. 300	A
Secondary Rated RMS Current (ISN)	100	mA
Transduction Ratio (KN)	1 : 2000
Supply Voltage (VC) ( 5 %)	12 .. 15	V
Current Consumption (IC)	28 (@ 12V) + IS	mA
Total Accuracy @ IPN, TA = 25C (XG)	0.5	%
Linearity (L)	< 0.1	%	Typ
Electrical Offset Current (IOE) @ IP = 0, TA = 25C	0.20	mA
Magnetic Offset Current (IOM) 1) @ IP = 0, overload 3 x IPN	0.20	mA
Temperature Drift of IO (IOT) (- 10C .. + 70C)	0.20 / 0.64	mA
Reaction Time to 10% of IPN (tra)	< 500	ns
Response Time to 90% of IPN (tr) 2)	< 1	s	@ 100 A/s di/dt
di/dt Follower Accuracy	> 100	A/s
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)	21
Mass (m)	82	g
AC Isolation Test Voltage (Vd) 1), 50 Hz, 1 min	3.52	kV	Primary-Secondary
Impulse Withstand Voltage (Vw) 1.2/50 s	6.5	kV
Creepage Distance (dCp) 2)	10	mm	Primary to external surface terminals
Electrical Clearance Distance (dCI) 3)	6	mm	Primary to external surface terminals
Comparative Tracking Index (CTI) (group IIIa)	275

1912111437_LEM-LT208-S7-SP1_C454765.pdf

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