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Closed loop (compensated) current transducer using the Hall effect
| Primary Current, Measuring Range | 0 .. ± 300 A |
| Supply Voltage | ± 12 .. 15 V |
| Operating Temperature Range | - 10 .. + 85 °C |
| Isolation Test Voltage | 6 kV |
| Current Consumption (IC) | 20 (@ ± 15 V) + I mA |
| Primary nominal current rms (I) | 200 A |
AC variable speed drives and servo motor drives, Static converters for DC motor drives, Battery supplied applications, Uninterruptible Power Supplies (UPS), Switched Mode Power Supplies (SMPS), Power supplies for welding applications
The LA 205-S is a closed loop (compensated) current transducer from LEM.
It offers excellent accuracy, very good linearity, low temperature drift and wide frequency bandwidth. Typical applications include AC variable speed drives and servo motor drives, Static converters for DC motor drives, Battery supplied applications and Uninterruptible Power Supplies (UPS).
Key characteristics from the official datasheet: linearity error < 0.1 %; frequency bandwidth DC .. 100 kHz; operating temperature - 10 .. + 85 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LA |
| Product Reference | LA 205-S |
| Primary Nominal Current | 200 A |
| Supply Voltage | ± 12 .. 15 V |
| Measurement | — |
| Mounting | Busbar Mount |
| Application Domain | Industrial |
| Electrical Data — LA 205-S | |
|---|---|
| Primary Current, Measuring Range (IPM) | 0 .. ± 300 A |
| Supply Voltage (UC) | ± 12 .. 15 V |
| Current Consumption (IC) | 20 (@ ± 15 V) + I mA |
| Primary nominal current rms (I) | 200 A |
| Primary current, measuring range (I) | 0 .. ± 300 A |
| Measuring overload (î) | 600 A |
| Secondary nominal current rms (I) | 100 mA |
| Supply voltage (± 5 %) (V) | ± 12 .. 15 V |
| Accuracy & Dynamic Performance | |
|---|---|
| Linearity Error (εL) | < 0.1 % |
| Frequency Bandwidth (BW) | DC .. 100 kHz |
| Linearity error | < 0.1 % |
| Temperature variation of I (I) | - 10°C .. + 85°C ± 0.15 ± 0.30 mA |
| Response time 3) @ 90 % of I step (t) | < 1 µs |
| BW Frequency bandwidth (- 3 dB) | DC .. 100 kHz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 6 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 18 kV |
| Creepage Distance (dCp) | 25 mm |
| Rated Insulation Voltage (reinforced) | 1250 V |
| Overvoltage Category / Pollution Degree | Over voltage category OV · Pollution degree PD2 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | - 10 .. + 85 °C |
| Ambient Storage Temperature (TA st) | - 40 .. + 90 °C |
| Mass (m) | 110 g |
| Ambient operating temperature (T) | - 10 .. + 85 °C |
| Ambient storage temperature (T) | - 40 .. + 90 °C |
| Standards & Certifications | |
|---|---|
| EN 50178 | Compliance |
| Standards EN 50178: | 1997 |
Note: Specifications are taken from the official LA 205-S datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LA 205-S.
Outline dimensions, pin layout and connection diagrams of the LA 205-S are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 110 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the LA 205-S.
Characteristic curve diagrams are not included in the LA 205-S datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Linearity Error (εL) | < 0.1 % |
| Frequency Bandwidth (BW) | DC .. 100 kHz |
| Linearity error | < 0.1 % |
| Response time 3) @ 90 % of I step (t) | < 1 µs |
| BW Frequency bandwidth (- 3 dB) | DC .. 100 kHz |
Note: For the full set of performance data, refer to the datasheet.
Other models of the LA 205 305 -S -T share the same measurement principle, mounting concept and output interface family.
