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Voltage transducer
| Primary Nominal RMS Voltage | 250 V |
| Primary Voltage Measuring Range | ± 375 V |
| Secondary Nominal RMS Current | 50 mA |
| Operating Temperature Range | −40 … 85 °C |
| RMS Voltage for AC Insulation Test | 8.5 kV |
| Measuring Resistance (RM) | 0 .. 120 Ohm |
AC variable speed and servo motor drives, Static converters for DC motor drives, Battery supplied applications, Uninterruptible Power Supplies (UPS), Switched Mode Power Supplies (SMPS), Power supplies for welding applications, Renewable Energy (Solar and Wind), Single or three phase inverters, Propulsion and braking choppers, Propulsion converters, Auxiliary converters, High power drives, Substations.
The DVL 250 is a None current transducer from LEM for the electronic measurement of voltage: DC, AC, pulsed..., with galvanic isolation.
It offers excellent accuracy. Typical applications include AC variable speed and servo motor drives, Static converters for DC motor drives, Battery supplied applications and Uninterruptible Power Supplies (UPS).
Key characteristics from the official datasheet: total error ± 1 % (−40 … 85 °C); linearity error ± 0.5 %; frequency bandwidth 14 kHz (−3 dB); operating temperature −40 … 85 °C; nominal secondary output 50 mA.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | DVL |
| Product Reference | DVL 250 |
| Nominal Primary Voltage | 250 V |
| Supply Voltage | ±13.5 .. ±26.4 V |
| Measurement | voltage: DC, AC, pulsed... |
| Mounting | — |
| Application Domain | Railway (fixed installations and onboard), Industrial |
| Electrical Data — DVL 250 | |
|---|---|
| Primary Nominal RMS Voltage (UPN) | 250 V |
| Primary Voltage, Measuring Range (UPM) | ± 375 V |
| Measuring Resistance (RM) | 0 .. 120 Ohm |
| Secondary Nominal RMS Current (ISN) | 50 mA |
| Secondary Current (IS) | ± 75 mA |
| Supply Voltage (UC) | ±13.5 .. ±26.4 V |
| Sensitivity (S) | 200 µA/V |
| Resistance of Primary (RP) | 2.7 MOhm |
| Total Primary Power Loss | 23 mW |
| Insulation Resistance (RINS) | 200 MOhm |
| Accuracy & Dynamic Performance | |
|---|---|
| Sensitivity Error | ± 0.2 % |
| Temperature Variation of Sensitivity Error | ± 0.5 % |
| Linearity Error (εL) | ± 0.5 % |
| Total Error (εtot) | ± 1 % (−40 … 85 °C) |
| Delay Time @ 10 % of UPN Step | 30 µs |
| Delay Time @ 90 % of UPN Step | 50 .. 60 µs |
| Frequency Bandwidth (BW) | 14 kHz (−3 dB) |
| Start-up Time | 190 .. 250 ms |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 8.5 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 16 kV |
| Comparative Tracking Index (CTI) | 600 |
| Partial Discharge Test Voltage (Ut) | 2700 V |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 … 85 °C |
| Ambient Storage Temperature (TA st) | −50 … 90 °C |
| Mass (m) | 300 g |
| Case Material | V0 according to UL 94 |
| Standards & Certifications | |
|---|---|
| EN 50155 | 2021 |
| EN 50178 | 1997 |
| EN 50124-1 | 2017 |
| EN 50121-3-2 | 2016 |
| UL 508 | 2013 |
| IEC 61010-1 | 2010/AMD1: 2016 |
Note: Specifications are taken from the official DVL 250 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the DVL 250.
Outline dimensions, pin layout and connection diagrams of the DVL 250 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 300 g |
| Case Material | V0 according to UL 94 |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the DVL 250.
The characteristic curves of the DVL 250 from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Sensitivity (S) | 200 µA/V |
| Sensitivity Error | ± 0.2 % |
| Temperature Variation of Sensitivity Error | ± 0.5 % |
| Linearity Error (εL) | ± 0.5 % |
| Total Error (εtot) | ± 1 % (−40 … 85 °C) |
| Frequency Bandwidth (BW) | 14 kHz (−3 dB) |
Note: Refer to the datasheet for the complete set of characteristic curves.
Other models of the DVL Series share the same measurement principle, mounting concept and output interface family.
