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Specifications
working temperature:
-40℃~+85℃
Current Range:
±100A
Voltage - Supply:
-15V~-12V;12V~15V
Band Width:
200kHz
Bidirectional Current Detection:
Support
Mfr. Part #:
LA55-P/SP1
Package:
Through Hole
Key Attributes
Model Number:
LA55-P/SP1
Product Description
Product Overview
The LEM LA 55-P/SP1 is a closed-loop (compensated) current transducer utilizing the Hall effect for the electronic measurement of DC, AC, and pulsed currents. It provides galvanic separation between the primary and secondary circuits, featuring an insulating plastic case recognized according to UL 94-V0. This transducer offers excellent accuracy, linearity, and low temperature drift, with a wide frequency bandwidth and no insertion losses, making it suitable for various industrial applications including AC variable speed drives, static converters, UPS, and SMPS.
Product Attributes
- Brand: LEM
- Model: LA 55-P/SP1
- Certifications: UL 94-V0, EN 50178, UL 508
- Application Domain: Industrial
Technical Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Primary nominal RMS current (IP N) | 50 | A | |
| Primary current, measuring range (IP M) | 0 ... 100 | A | |
| Secondary nominal RMS current (IS N) | 25 | mA | |
| Turns ratio (NP/NS) | 1 : 2000 | ||
| Supply voltage (UC) (5 %) | 12 ... 15 | V | |
| Current consumption (IC) (2) | 10 (@ 15 V) + IS | mA | |
| Error @ IP N, TA = 25 C (@ 15 V) | 0.65 | % | |
| Error @ IP N, TA = 25 C (@ 12 15 V) | 0.90 | % | |
| Linearity error (L) | < 0.15 | % | Typ Max |
| Electrical Offset current (IO E) @ IP = 0, TA = 25 C | 0.10 | mA | |
| Magnetic offset current (IO M) @ IP = 0 | 0.15 | mA | after an overload of 3 IP N |
| Temperature variation of IO (IO T) 25 C +85 C | 0.05 ... 0.30 | mA | |
| Temperature variation of IO (IO T) 40 C 25 C | 0.10 ... 0.50 | mA | |
| Delay time to 10 % (tD 10) for IP N step | < 500 | ns | |
| Delay time to 90 % (tD 90) for IP N step | < 1 | s | For a di/dt = 100 A/s. |
| Frequency bandwidth (1 dB) (BW) | DC 200 | kHz | |
| Ambient operating temperature (TA) | 40 +85 | C | |
| Ambient storage temperature (TA st) | 40 +90 | C | |
| Resistance of secondary winding (RS) @ TA = 70 C | 145 | ||
| Resistance of secondary winding (RS) @ TA = 85 C | 150 | ||
| Mass (m) | 18 | g | |
| RMS voltage for AC insulation test (Ud) 50 Hz/1 min | 2.5 | kV | |
| Impulse withstand voltage (UNi) 1.2/50 s | 4.5 | kV | |
| Creepage distance (dCp) | 3.8 | mm | |
| Clearance (dCI) | 3.8 | mm | |
| Comparative tracking index (CTI) | 600 | (group I) |
2410311332_LEM-LA55-P-SP1_C454751.pdf
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