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Closed loop (compensated) current transducer using the Hall effect
| Primary Current, Measuring Range | 0 ... ±2000 A |
| Conversion Ratio (KN) | 1 : 5000 |
| Secondary Nominal RMS Current (ISN) | 200 mA |
| Response Time to 90 % of IPN Step | < 1 µs |
| Isolation Test Voltage (50 Hz, 1 min) | 12 kV |
| Operating Temperature Range | −40 ... +85 °C |
Single or three phase inverter, Propulsion and braking chopper, Propulsion converter, Auxiliary converter, Battery charger. Application Domain, Railway (fixed installations and onboard).
The LF 2005-S/SP9 is a closed loop (compensated) current transducer from LEM for the electronic measurement of currents: DC, AC, pulsed..., I = 1000 A, with galvanic isolation.
It offers excellent accuracy, very good linearity, low temperature drift and wide frequency bandwidth. Typical applications include Single or three phase inverter, Propulsion and braking chopper, Propulsion converter and Auxiliary converter.
Key characteristics from the official datasheet: linearity error < 0.1 %; frequency bandwidth DC ... 100 kHz; operating temperature −40 ... +85 °C; nominal secondary output 200 mA.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LF |
| Product Reference | LF 2005-S/SP9 |
| Primary Nominal Current | 1000 A |
| Supply Voltage | ±15 ... 24 V |
| Measurement | currents: DC, AC, pulsed..., I = 1000 A |
| Mounting | Busbar Mount |
| Application Domain | Railway (fixed installations and onboard) |
| Electrical Data — LF 2005-S/SP9 | |
|---|---|
| Primary Nominal RMS Current (IPN) | 1000 A |
| Primary Current, Measuring Range (IPM) | 0 ... ±2000 A |
| Secondary Nominal RMS Current (ISN) | 200 mA |
| Conversion Ratio (KN) | 1 : 5000 |
| Supply Voltage (UC) | ±15 ... 24 V |
| Current Consumption (IC) | 33 (@ ±24 V) + IS mA |
| Turns Ratio (NP/NS) | 1 : 5000 |
| Accuracy & Dynamic Performance | |
|---|---|
| Linearity Error (εL) | < 0.1 % |
| Response Time to 90 % of IPN Step (tr) | < 1 µs |
| Frequency Bandwidth (-1 dB) (BW) | DC ... 100 kHz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 12 kV |
| Creepage Distance (dCp) | 51.5 mm |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 ... +85 °C |
| Ambient Storage Temperature (TA st) | −40 ... +85 °C |
| Secondary Coil Resistance @ TA = 70 °C (RS) | 33 Ω |
| Case Material | Insulating plastic case recognized according to UL 94-V0. |
| Standards & Certifications | |
|---|---|
| EN 50155 | 2021 |
| EN 50121-3-2 | Compliance |
Note: Specifications are taken from the official LF 2005-S/SP9 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LF 2005-S/SP9.
Outline dimensions, pin layout and connection diagrams of the LF 2005-S/SP9 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Case Material | Insulating plastic case recognized according to UL 94-V0. |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the LF 2005-S/SP9.
Characteristic curve diagrams are not included in the LF 2005-S/SP9 datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Linearity Error (εL) | < 0.1 % |
| Response Time to 90 % of IPN Step (tr) | < 1 µs |
| Frequency Bandwidth (-1 dB) (BW) | DC ... 100 kHz |
Note: For the full set of performance data, refer to the datasheet.
Other models of the LF Series share the same measurement principle, mounting concept and output interface family.
