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Closed loop (compensated) voltage transducer using the Hall effect
| Primary Current, Measuring Range | 0 … ±14 mA |
| Secondary Nominal Current | 25 mA |
| Supply Voltage | ±12 … 15 V |
| Operating Temperature Range | 0 … +70 °C |
| Primary Nominal RMS Current (IPN) | 10 mA |
| Secondary Nominal RMS Current (ISN) | 25 mA |
AC variable speed drives and servo motor drives, Static converters for DC motor drives, Battery supplied applications, Uninterruptible Power Supplies (UPS), Power supplies for welding applications.
The LV 25-P is a closed loop (compensated) current transducer from LEM for the electronic measurement of voltages: DC, AC, pulsed..., U = 10 ... 500 V d d, with galvanic isolation.
It offers excellent accuracy and very good linearity. Typical applications include AC variable speed drives and servo motor drives, Static converters for DC motor drives, Battery supplied applications and Uninterruptible Power Supplies (UPS).
Key characteristics from the official datasheet: linearity error < 0.2 %; operating temperature 0 … +70 °C; nominal secondary output 25 mA.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | LV |
| Product Reference | LV 25-P |
| Primary Nominal Current | 10 mA |
| Supply Voltage | ±12 … 15 V |
| Measurement | voltages: DC, AC, pulsed..., U = 10 ... 500 V d d |
| Mounting | PCB Mount |
| Application Domain | Industrial |
| Electrical Data — LV 25-P | |
|---|---|
| Primary Nominal RMS Current (IPN) | 10 mA |
| Primary Current, Measuring Range (IPM) | 0 … ±14 mA |
| Secondary Nominal RMS Current (ISN) | 25 mA |
| Turns Ratio (NP/NS) | 2500 : 1000 |
| Supply Voltage (UC) | ±12 … 15 V |
| Current Consumption (IC) | 10 (@ ±15 V) + I mA resistor R which is selected by |
| Accuracy & Dynamic Performance | |
|---|---|
| Linearity Error (εL) | < 0.2 % |
| Insulation Coordination | |
|---|---|
| Impulse Withstand Voltage (1.2/50 µs) UNi | 16 kV |
| Creepage Distance (dCp) | 19.5 mm |
| Clearance (dCI) | 19.5 mm |
| Comparative Tracking Index (CTI) | 175 |
| Rated Insulation Voltage (basic) | 1600 V |
| Rated Insulation Voltage (reinforced) | 800 V |
| Overvoltage Category / Pollution Degree | Over voltage category OV · Pollution degree PD2 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | 0 … +70 °C |
| Ambient Storage Temperature (TA st) | −25 … +85 °C |
| Mass (m) | 22 g |
| Case Material | Insulating plastic case recognized according to UL 94-V0. |
| Standards & Certifications | |
|---|---|
| EN 50178 | Compliance |
| UL 508 | Compliance |
Note: Specifications are taken from the official LV 25-P datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the LV 25-P.
Outline dimensions, pin layout and connection diagrams of the LV 25-P are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 22 g |
| 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 LV 25-P.
Characteristic curve diagrams are not included in the LV 25-P datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Linearity Error (εL) | < 0.2 % |
Note: For the full set of performance data, refer to the datasheet.
Other models of the LV25 Series share the same measurement principle, mounting concept and output interface family.
