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Specifications
Mfr. Part #:
LT58-S7/SP8
Key Attributes
Model Number:
LT58-S7/SP8
Product Description
Product Overview
The LT 58-S7/SP8 is a closed-loop (compensated) current transducer utilizing Hall effect technology for precise electronic measurement of DC, AC, and pulsed currents. It provides galvanic isolation between the primary and secondary circuits, offering excellent accuracy, linearity, low temperature drift, and a wide frequency bandwidth. This transducer is suitable for industrial applications, including AC and DC motor drives, UPS, SMPS, and welding power supplies.
Product Attributes
- Brand: LEM
- Certifications: UL 94-V0, EN 50178, IEC 61010-1
- Material: Isolated plastic case
- Origin: Not specified
- Color: Not specified
Technical Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Product Name | LT 58-S7/SP8 | ||
| Primary Nominal Current (IPN) | 50 | A rms | |
| Primary Current Measuring Range (IPM) | 0 .. 70 | A | |
| Secondary Nominal Current (ISN) | 50 | mA rms | |
| Conversion Ratio (KN) | 1 : 1000 | ||
| Supply Voltage (VC) | 12 .. 15 | V ( 5 %) | |
| Current Consumption (IC) | 20 + IS | mA | @ 15 V |
| Overall Accuracy (XG) | 0.8 | % | @ IPN, TA = 25C |
| Linearity Error (L) | < 0.2 | % | Typ |
| Electrical Offset Current (IOE) | 0.10 | mA | @ IP = 0, TA = 25C |
| Magnetic Offset Current (IOM) | 0.20 | mA | @ IP = 0, specified RM, after 3 x IPN overload |
| Temperature Variation of IO (IOT) | 0.35 / 0.64 | mA | - 25C .. + 70C |
| Reaction Time to 10% of IPN step | < 500 | ns | |
| Response Time to 90% of IPN step | < 1 | s | With a di/dt of 100 A/s, IPN = 50 A |
| di/dt Accurately Followed | > 100 | A/s | |
| Frequency Bandwidth (- 3 dB) (BW) | DC .. 100 | kHz | |
| Ambient Operating Temperature (TA) | - 25 .. + 70 | C | |
| Ambient Storage Temperature (TS) | - 40 .. + 85 | C | |
| Secondary Coil Resistance (RS) | 11 | @ TA = 70C | |
| Mass | 68 | g | |
| Rms Voltage for AC Insulation Test (Vd) | 3.52 | kV | 50 Hz, 1 min, between primary and secondary |
| Impulse Withstand Voltage (Vw) | 6.5 | kV | 1.2/50 s, between primary and secondary |
| Creepage Distance (dCp) | 10 | mm | On housing, OV 3, PD2 |
| Clearance (dCI) | 6 | mm | On housing, OV 3, PD2 |
| Comparative Tracking Index (CTI) | 275 | Group IIIa | |
| Rated Insulation Voltage (Basic) | 600 | V | EN 50178 / IEC 61010-1 |
| Rated Insulation Voltage (Reinforced) | 300 | V | EN 50178 / IEC 61010-1 |
| Primary Through-hole Diameter | 20 | mm | |
| Fastening | 2 holes 5.4 mm (M5 screws, 1.5 Nm) or 2 notches 4.2 mm (M4 screws, 0.75 Nm) | General tolerance 0.5 mm |
2411280107_LEM-LT58-S7-SP8_C454798.pdf
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