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Closed loop (compensated) current transducer using the Hall effect
| Primary Current, Measuring Range | 0 .. ± 2000 A |
| Conversion Ratio (KN) | 1 : 4000 |
| Secondary Nominal RMS Current (ISN) | 250 mA |
| Response Time to 90 % of IPN Step | < 1 µs |
| Impulse Withstand Voltage (1.2/50 µs) | 38 kV |
| Operating Temperature Range | - 40 .. + 85 °C |
Single or three phase inverters, Propulsion and braking chopper, Propulsion converter, Auxiliary converter, Battery charger. Application Domain, Traction.
The LT 1005-S/SP4 is a closed loop (compensated) current transducer from LEM for the electronic measurement of currents: DC, AC, pulsed..., with galvanic isolation.
It offers excellent accuracy, very good linearity, low temperature drift and wide frequency bandwidth. Typical applications include Single or three phase inverters, Propulsion and braking chopper, Propulsion converter and Auxiliary converter.
Key characteristics from the official datasheet: linearity error < 0.1 %; frequency bandwidth DC .. 150 kHz; operating temperature - 40 .. + 85 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LT |
| Product Reference | LT 1005-S/SP4 |
| Primary Nominal Current | 1000 A |
| Supply Voltage | ± 15 .. 24 V |
| Measurement | currents: DC, AC, pulsed... |
| Mounting | Busbar Mount |
| Application Domain | Traction |
| Electrical Data — LT 1005-S/SP4 | |
|---|---|
| Primary Nominal RMS Current (IPN) | 1000 A |
| Primary Current, Measuring Range (IPM) | 0 .. ± 2000 A |
| Secondary Nominal RMS Current (ISN) | 250 mA |
| Conversion Ratio (KN) | 1 : 4000 |
| Supply Voltage (UC) | ± 15 .. 24 V |
| Current Consumption (IC) | 30 (@ ± 24 V) + IS mA |
| Accuracy & Dynamic Performance | |
|---|---|
| Overall Accuracy @ IPN, TA = 25 °C (XG) | ± 0.4 % |
| Linearity Error (εL) | < 0.1 % |
| Offset Current @ IP = 0, TA = 25 °C (IO) | ± 0.50 mA |
| Temperature Variation of IO (Max) | ± 0.80 mA |
| Response Time to 90 % of IPN Step (tr) | < 1 µs |
| di/dt Accurately Followed | > 50 A/µs |
| Frequency Bandwidth (-1 dB) (BW) | DC .. 150 kHz |
| Insulation Coordination | |
|---|---|
| Impulse Withstand Voltage (1.2/50 µs) UNi | 38 kV |
| Creepage Distance (dCp) | 61.9 mm |
| Clearance (dCI) | 53.1 mm |
| Comparative Tracking Index (CTI) | 225 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | - 40 .. + 85 °C |
| Ambient Storage Temperature (TA st) | - 50 .. + 95 °C |
| Secondary Coil Resistance @ TA = 70 °C (RS) | 26 Ω |
| Mass (m) | 850 g |
| Standards & Certifications | |
|---|---|
| EN 50155 | Compliance |
Note: Specifications are taken from the official LT 1005-S/SP4 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LT 1005-S/SP4.
Outline dimensions, pin layout and connection diagrams of the LT 1005-S/SP4 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 850 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the LT 1005-S/SP4.
Characteristic curve diagrams are not included in the LT 1005-S/SP4 datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Overall Accuracy @ IPN, TA = 25 °C (XG) | ± 0.4 % |
| Linearity Error (εL) | < 0.1 % |
| Response Time to 90 % of IPN Step (tr) | < 1 µs |
| di/dt Accurately Followed | > 50 A/µs |
| Frequency Bandwidth (-1 dB) (BW) | DC .. 150 kHz |
Note: For the full set of performance data, refer to the datasheet.
Other models of the LT Series share the same measurement principle, mounting concept and output interface family.
