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Closed loop (compensated)
| Primary Current, Measuring Range | 0 .. ± 500 |
| Supply Voltage | ± 12 .. 18 V |
| Operating Temperature Range | - 10 .. + 85 |
| Current Consumption (IC) | 20 (@ ± 15 V) + I S mA • High immunity to external |
| Primary nominal r.m.s. current (I) | 250 A |
| Measuring overload (Î) | 600 A |
UNVERIFIED
The LA 255-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 UNVERIFIED.
Key characteristics from the official datasheet: linearity error < 0.1 %; frequency bandwidth DC .. 100 kHz; operating temperature - 10 .. + 85.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LA |
| Product Reference | LA 255-S |
| Supply Voltage | ± 12 .. 18 V |
| Measurement | — |
| Mounting | — |
| Application Domain | — |
| Electrical Data — LA 255-S | |
|---|---|
| Primary Current, Measuring Range (IPM) | 0 .. ± 500 |
| Supply Voltage (UC) | ± 12 .. 18 V |
| Current Consumption (IC) | 20 (@ ± 15 V) + I S mA • High immunity to external |
| Primary nominal r.m.s. current (I) | 250 A |
| Primary current, measuring range (I) | 0 .. ± 500 A |
| Measuring overload (Î) | 600 A |
| Secondary nominal r.m.s. current (I) | 125 mA |
| Supply voltage (± 5 %) (V) | ± 12 .. 18 V |
| R.m.s. rated voltage 2), safe separation (V) | 1625 V |
| Accuracy & Dynamic Performance | |
|---|---|
| Linearity Error (εL) | < 0.1 % |
| Frequency Bandwidth (BW) | DC .. 100 kHz |
| Linearity error | < 0.1 % |
| Thermal drift of I (I) | - 10°C .. + 85°C ± 0.15 ± 0.30 mA |
| Frequency bandwidth (- 3 dB) (f) | DC .. 100 kHz |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | - 10 .. + 85 |
| Ambient Storage Temperature (TA st) | - 40 .. + 90 |
| Mass (m) | 110 g |
| Ambient operating temperature (T) | - 10 .. + 85 °C |
| Ambient storage temperature (T) | - 40 .. + 90 °C |
| Standards & Certifications | |
|---|---|
| 5) EN | |
| Standards 5) EN | 50178 |
Note: Specifications are taken from the official LA 255-S datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LA 255-S.
Outline dimensions, pin layout and connection diagrams of the LA 255-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 255-S.
Characteristic curve diagrams are not included in the LA 255-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 % |
| Frequency bandwidth (- 3 dB) (f) | 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.
