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Closed loop (compensated)
| Primary Current, Measuring Range | −500 ... 500 mA |
| Output Voltage Range | 0.001 ... 1.7 V (typ 1.2 V) |
| Supply Voltage | 4.75 ... 5.25 V |
| Operating Temperature Range | −40 ... 105 °C |
| Isolation Test Voltage | 6 kV |
| Primary Nominal RMS Current (IPN) | 300 mA |
Residual current measurement, Leakage current measurement in transformerless PV inverters, First human contact protection of PV arrays, Failure detection in power sources, Symmetrical fault detection (e.g. after motor inverter), Leakage current detection in stacked DC sources, Single phase or three phase nominal current measurement.
The CTSR 0.3-TP/SP14 is a closed loop (compensated) current transducer from LEM for the electronic measurement of current: DC, AC, pulsed…, with galvanic isolation.
Typical applications include Residual current measurement, Leakage current measurement in transformerless PV inverters, First human contact protection of PV arrays and Failure detection in power sources.
Key characteristics from the official datasheet: linearity error 0.5 ... 1 % of IPRM; frequency bandwidth 3.5 ... 500 kHz; operating temperature −40 ... 105 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | CTSR |
| Product Reference | CTSR 0.3-TP/SP14 |
| Primary Nominal Current | 300 mA |
| Supply Voltage | 4.75 ... 5.25 V |
| Measurement | current: DC, AC, pulsed… |
| Mounting | PCB Mount |
| Application Domain | Industrial, Suitable to fulfil VDE 0126-1-1, UL 1741 and IEC 62109-2 |
| Electrical Data — CTSR 0.3-TP/SP14 | |
|---|---|
| Primary Nominal RMS Current (IPN) | 300 mA |
| Primary Current, Measuring Range (IPM) | −500 ... 500 mA |
| Supply Voltage (UC) | 4.75 ... 5.25 V |
| Current Consumption (IC) | 17.5 ... 21.6 mA |
| Accuracy & Dynamic Performance | |
|---|---|
| Linearity Error (εL) | 0.5 ... 1 % of IPRM |
| Response Time to 90 % of IPN Step | 50 ... 500 µs |
| Frequency Bandwidth | 3.5 ... 500 kHz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 6 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 11.2 kV |
| Creepage Distance (dCp) | 6.7 mm |
| Clearance (dCI) | 6.7 mm |
| Comparative Tracking Index (CTI) | 600 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 ... 105 °C |
| Ambient Storage Temperature (TA st) | −50 ... 105 °C |
| Mass (m) | 55 g |
| Standards & Certifications | |
|---|---|
| EN 50178 | Compliance |
| IEC 61010-1 | Compliance |
| UL 508 | 2010. |
Note: Specifications are taken from the official CTSR 0.3-TP/SP14 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the CTSR 0.3-TP/SP14.
Outline dimensions, pin layout and connection diagrams of the CTSR 0.3-TP/SP14 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 55 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the CTSR 0.3-TP/SP14.
The characteristic curves of the CTSR 0.3-TP/SP14 from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Linearity Error (εL) | 0.5 ... 1 % of IPRM |
| Response Time to 90 % of IPN Step | 50 ... 500 µs |
| Frequency Bandwidth | 3.5 ... 500 kHz |
Note: Refer to the datasheet for the complete set of characteristic curves.
Other models of the CTSR Series share the same measurement principle, mounting concept and output interface family.
