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Specifications
working temperature:
-10℃~+70℃
Current Range:
±300A
Voltage - Supply:
-15V~-12V;12V~15V
Band Width:
100kHz
Bidirectional Current Detection:
Support
Mfr. Part #:
LT208-S7
Key Attributes
Model Number:
LT208-S7
Product Description
Product Overview
The LEM LT 208-S7 is an isolated current sensor designed for measuring DC, AC, and pulse currents. It offers excellent accuracy, linearity, low temperature drift, and fast response times, making it suitable for a wide range of industrial applications including variable speed drives, servo motors, and power supplies.
Product Attributes
- Brand: LEM
- Model: LT 208-S7
- Certifications: EN 50178, UL 94-V0 (insulation housing)
- Origin: China (implied by Shanghai Jiaren mention)
Technical Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Primary Rated RMS Current (IPN) | 200 | A | |
| Primary Current Measuring Range (IPM) | 0 .. 300 | A | |
| Secondary Rated RMS Current (ISN) | 100 | mA | |
| Conversion Ratio (KN) | 1 : 2000 | ||
| Supply Voltage (VC) | 12 .. 15 | V | ( 5 %) |
| Current Consumption (IC) | 28 (@ 12V) + IS | mA | |
| Total Accuracy @ IPN, TA = 25C (XG) | 0.5 | % | |
| Linearity (L) | < 0.1 | % | Typ |
| Zero Offset Voltage @ IP = 0, TA = 25C (IO) | 0.20 | mA | |
| Magnetic Offset Current (IOM) | 0.20 | mA | @ IP = 0, overload through 3 x IPN |
| Temperature Drift of IO (IOT) | 0.20 .. 0.64 | mA | (- 10C .. + 70C) |
| Response Time to 10% of IPN (tra) | < 500 | ns | |
| Response Time to 90% of IPN (tr) | < 1 | s | 2) |
| di/dt Following 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) | 79 | g | |
| AC Isolation Test Voltage (Vd) | 3.52 | kV | 50 Hz, 1 min, primary-secondary |
| Impulse Withstand Voltage (Vw) | 6.5 | kV | 1.2/50 s |
| Creepage Distance (dCp) | 10 | mm | 2) |
| Clearance Distance (dCI) | 6 | mm | 2) |
| Comparative Tracking Index (CTI) | 275 | (group IIIa) | |
| Load Voltage Category | OV 3 | According to EN 50178 | |
| Pollution Degree | PD2 | According to EN 50178 |
1912111437_LEM-LT208-S7_C454772.pdf
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