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Closed loop (compensated) current transducer using the Hall effect
| Primary Current, Measuring Range | −380 ... 380 A |
| Supply Voltage | 4.75 ... 5.25 V |
| Accuracy @ IPN | −0.83 ... 0.83 % of IPN |
| Operating Temperature Range | −40 ... 105 °C |
| Isolation Test Voltage | 4.3 kV |
| Primary Nominal RMS Current (IPN) | 250 A |
IEC 62109-1: 2010, IEC 61800-5-1: 2007, IEC 62477-1: 2012, IEC 61000-6-2: 2016, IEC 61000-6-3: 2006+A1/2010, IEC 61800-3: 2017, UL 508: 2018. Application Domain, Industrial.
The LWSR 250-P is a closed loop (compensated) current transducer from LEM for the electronic measurement of currents: DC, AC, pulsed..., with galvanic isolation.
Typical applications include IEC 62109-1: 2010, IEC 61800-5-1: 2007, IEC 62477-1: 2012 and IEC 61000-6-2: 2016.
Key characteristics from the official datasheet: linearity error −0.15 ... 0.15 % of IPN; frequency bandwidth 200 kHz; operating temperature −40 ... 105 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LWSR |
| Product Reference | LWSR 250-P |
| Primary Nominal Current | 250 A |
| Supply Voltage | 4.75 ... 5.25 V |
| Measurement | currents: DC, AC, pulsed... |
| Mounting | PCB Mount |
| Application Domain | Industrial |
| Electrical Data — LWSR 250-P | |
|---|---|
| Primary Nominal RMS Current (IPN) | 250 A |
| Primary Current, Measuring Range (IPM) | −380 ... 380 A |
| Supply Voltage (UC) | 4.75 ... 5.25 V |
| Current Consumption (IC) | 1600 mA |
| Accuracy & Dynamic Performance | |
|---|---|
| Accuracy @ IPN | −0.83 ... 0.83 % of IPN |
| Linearity Error (εL) | −0.15 ... 0.15 % of IPN |
| Electrical Offset Voltage (VO E) @ IP = 0 | −1.57 ... 1.57 mV |
| Response Time to 90 % of IPN Step | 2 µs |
| Frequency Bandwidth | 200 kHz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 4.3 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 8 kV |
| Comparative Tracking Index (CTI) | 600 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 ... 105 °C |
| Ambient Storage Temperature (TA st) | −55 ... 125 °C |
| Mass (m) | 76 g |
| Standards & Certifications | |
|---|---|
| IEC 62109-1 | Compliance |
| IEC 61800-5-1 | Compliance |
| IEC 62477-1 | Compliance |
| IEC 61000-6-2 | Compliance |
| IEC 61000-6-3 | 2006+A1/2010 |
| IEC 61800-3 | Compliance |
| UL 508 | 2018. |
Note: Specifications are taken from the official LWSR 250-P datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LWSR 250-P.
Outline dimensions, pin layout and connection diagrams of the LWSR 250-P are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 76 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the LWSR 250-P.
The characteristic curves of the LWSR 250-P from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Accuracy @ IPN | −0.83 ... 0.83 % of IPN |
| Linearity Error (εL) | −0.15 ... 0.15 % of IPN |
| Response Time to 90 % of IPN Step | 2 µs |
| Frequency Bandwidth | 200 kHz |
Note: Refer to the datasheet for the complete set of characteristic curves.
