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Closed loop (compensated) current transducer using the Hall effect
| Primary Current, Measuring Range | @ ±24 V 0 ... |
| Secondary Nominal Current | 125 mA |
| Supply Voltage | ±15 ... 24 V |
| Operating Temperature Range | −40 ... +85 °C |
| Primary Nominal RMS Current (IPN) | 500 A |
| Secondary Nominal RMS Current (ISN) | 125 mA |
Single or three phase inverter, Propulsion and braking chopper, Propulsion converter, Auxiliary converter, Battery charger. Application Domain, Railway (fixed installations and onboard).
The LTC 500-T is a None 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 inverter, Propulsion and braking chopper, Propulsion converter and Auxiliary converter.
Key characteristics from the official datasheet: total error ±0.6 %; linearity error < 0.1 %; frequency bandwidth DC ... 100 kHz; operating temperature −40 ... +85 °C; nominal secondary output 125 mA.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LTC |
| Product Reference | LTC 500-T |
| Primary Nominal Current | 500 A |
| Supply Voltage | ±15 ... 24 V |
| Measurement | currents: DC, AC, pulsed... |
| Mounting | Busbar Mount |
| Application Domain | Railway (fixed installations and onboard) |
| Electrical Data — LTC 500-T | |
|---|---|
| Primary Nominal RMS Current (IPN) | 500 A |
| Primary Current, Measuring Range (IPM) | @ ±24 V 0 ... |
| Secondary Nominal RMS Current (ISN) | 125 mA |
| Turns Ratio (NP/NS) | 1 : 4000 |
| Supply Voltage (UC) | ±15 ... 24 V |
| Current Consumption (IC) | < 35 (@ ±24 V) + I S mA |
| Accuracy & Dynamic Performance | |
|---|---|
| Total Error (εtot) @ IPN | ±0.6 % |
| Linearity Error (εL) | < 0.1 % |
| Frequency Bandwidth (BW) | DC ... 100 kHz |
| Insulation Coordination | |
|---|---|
| Creepage Distance (dCp) | 58.24 mm |
| Clearance (dCI) | 48.8 mm |
| Comparative Tracking Index (CTI) | 600 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 ... +85 °C |
| Ambient Storage Temperature (TA st) | −45 ... +90 °C |
| Mass (m) | 620 g |
| Case Material | Insulating plastic case recognized |
| General Tolerance | ±1 mm |
| Standards & Certifications | |
|---|---|
| EN 50155 | 20172) |
| EN 50121-3-2 | Compliance |
Note: Specifications are taken from the official LTC 500-T datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LTC 500-T.
Outline dimensions, pin layout and connection diagrams of the LTC 500-T are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| General Tolerance | ±1 mm |
| Mass | 620 g |
| Case Material | Insulating plastic case recognized |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the LTC 500-T.
Characteristic curve diagrams are not included in the LTC 500-T datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Total Error (εtot) @ IPN | ±0.6 % |
| Linearity Error (εL) | < 0.1 % |
| Frequency Bandwidth (BW) | DC ... 100 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.
