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Voltage transducer
| Primary Nominal RMS Voltage | 4200 V |
| Primary Voltage Measuring Range | ± 6000 V |
| Secondary Nominal RMS Current | 50 mA |
| Operating Temperature Range | −40 … 85 °C |
| RMS Voltage for AC Insulation Test | 18.5 kV |
| Measuring Resistance (RM) | 0 .. 140 Ohm |
Single or three phase inverters, Propulsion and braking choppers, Propulsion converters, Auxiliary converters, High power drives, Substations, On-board energy meters, Energy metering
The DV 4200/SP8 is a None current transducer from LEM for the electronic measurement of voltage: DC, AC, pulsed..., with galvanic isolation.
It offers excellent accuracy and low temperature drift. Typical applications include Single or three phase inverters, Propulsion and braking choppers, Propulsion converters and Auxiliary converters.
Key characteristics from the official datasheet: total error ± 0.7 % (−25 … 70 °C) / ± 1 % (−25 … 85 °C) / ± 1 % (−40 … 85 °C); linearity error ± 0.1 %; frequency bandwidth 12 kHz (−3 dB); operating temperature −40 … 85 °C; nominal secondary output 50 mA.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | DV |
| Product Reference | DV 4200/SP8 |
| Nominal Primary Voltage | 4200 V |
| Supply Voltage | ±13.5 .. ±26.4 V |
| Measurement | voltage: DC, AC, pulsed... |
| Mounting | — |
| Application Domain | Railway (fixed and onboard) |
| Electrical Data — DV 4200/SP8 | |
|---|---|
| Primary Nominal RMS Voltage (UPN) | 4200 V |
| Primary Voltage, Measuring Range (UPM) | ± 6000 V |
| Measuring Resistance (RM) | 0 .. 140 Ohm |
| Secondary Nominal RMS Current (ISN) | 50 mA |
| Secondary Current (IS) | ± 71.4 mA |
| Supply Voltage (UC) | ±13.5 .. ±26.4 V |
| Current Consumption (IC) | 20 + IS mA @ ±UC = ±24 V |
| Sensitivity (S) | 11.9048 µA/V |
| Resistance of Primary (RP) | 23 MOhm |
| Total Primary Power Loss | 0.77 W |
| Insulation Resistance (RINS) | 200 MOhm |
| ⎓ Supply voltage (±UC) | Min ±13.5 / Typ ±24 / Max ±26.4 V |
| U Rise time of (10-90 %) C (trise) | Max 100 ms |
| ⎓ Current consumption (IC) | Typ I 20 + S / Max I 25 + S mA |
| Electrical Offset current (IOE) | Min −50 / Typ 0 / Max 50 μA |
| Sensitivity error (εS) | Min −0.2 / Typ 0 / Max 0.2 % |
| Temperature variation of sensitivity error (εST) | Min −0.5 −0.8 −0.8 / Max 0.5 0.8 0.8 % |
| RMS noise current (Ino) | Typ 10 μA |
| Start-up time (tstart) | Typ 190 / Max 250 ms |
| Resistance of primary (winding) (RP) | Typ 23 MΩ |
| Absolute Maximum Ratings | |
|---|---|
| ⎓ Maximum supply voltage (working) (−40 … 85 °C) (±UCmax) | ±26.4 V |
| Absolute Maximum Ratings | |
|---|---|
| Maximum primary voltage (−40 … 85 °C) (UPmax) | 6 kV |
| Absolute Maximum Ratings | |
|---|---|
| Maximum steady state primary voltage (−40 … 85 °C) (UPNmax) | 4200 V see derating on figure 2 |
| Accuracy & Dynamic Performance | |
|---|---|
| Sensitivity Error | ± 0.2 % |
| Temperature Variation of Sensitivity Error | ± 0.8 % (−25 … 85 °C) / ± 0.8 % (−40 … 85 °C) |
| Linearity Error (εL) | ± 0.1 % |
| Total Error (εtot) | ± 0.7 % (−25 … 70 °C) / ± 1 % (−25 … 85 °C) / ± 1 % (−40 … 85 °C) |
| RMS Noise Current | 10 µA |
| Delay Time @ 10 % of UPN Step | 21 µs |
| Delay Time @ 90 % of UPN Step | 48 .. 60 µs |
| Frequency Bandwidth (BW) | 12 kHz (−3 dB) |
| Start-up Time | 190 .. 250 ms |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 18.5 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 30 kV |
| Comparative Tracking Index (CTI) | 600 |
| Partial Discharge Test Voltage (Ut) | 5000 V |
| Pollution Degree | 4 |
| Rated Altitude | 2000 m |
| Mean failure rate (λ) | Typ 1/1883371 h-1 |
| RMS voltage for AC insulation test, 50 Hz, 1 min (Ud) | 18.5 kV |
| Impulse withstand voltage 1.2/50 µs (UNi) | 30 kV |
| Partial discharge extinction RMS voltage @ 10 pC (Ut) | 5000 V |
| Clearance (pri. - sec.) (dCI) | see dimensions mm |
| Creepage distance (pri. - sec.) (dCp) | drawing on page 10 mm |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 … 85 °C |
| Ambient Storage Temperature (TA st) | −50 … 90 °C |
| Mass (m) | 655 g |
| Case Material | V0 according to UL 94 |
| Ingress Protection Rating | IP40 |
| Relative humidity (RH) | Max 95 % |
| Altitude | Max 1) 2000 m |
| Standards & Certifications | |
|---|---|
| EN 50155 | 2021 |
| EN 50124-1 | 2017 |
| EN 50121-3-2 | 2016 |
Note: Specifications are taken from the official DV 4200/SP8 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the DV 4200/SP8.
Outline dimensions, pin layout and connection diagrams of the DV 4200/SP8 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 655 g |
| Resistance of primary (winding) (RP) | Typ 23 MΩ |
| Case Material | V0 according to UL 94 |
| Ingress Protection Rating | IP40 |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the DV 4200/SP8.
The characteristic curves of the DV 4200/SP8 from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Sensitivity (S) | 11.9048 µA/V |
| U Rise time of (10-90 %) C (trise) | Max 100 ms |
| Sensitivity error (εS) | Min −0.2 / Typ 0 / Max 0.2 % |
| Temperature variation of sensitivity error (εST) | Min −0.5 −0.8 −0.8 / Max 0.5 0.8 0.8 % |
| Sensitivity Error | ± 0.2 % |
| Temperature Variation of Sensitivity Error | ± 0.8 % (−25 … 85 °C) / ± 0.8 % (−40 … 85 °C) |
| Linearity Error (εL) | ± 0.1 % |
| Total Error (εtot) | ± 0.7 % (−25 … 70 °C) / ± 1 % (−25 … 85 °C) / ± 1 % (−40 … 85 °C) |
| Frequency Bandwidth (BW) | 12 kHz (−3 dB) |
Note: Refer to the datasheet for the complete set of characteristic curves.
Other models of the DV Series share the same measurement principle, mounting concept and output interface family.
