High Voltage and Current Measurement on Rolling Stock
Railway | Rolling Stock
Sector
Monitoring and control of traction motors, monitoring of DC link voltage in traction power converters or on-board converters
Application
Up to ±4500 V DC / ±3000 V AC, isolation of up to 4800 V AC/DC continuous, isolation Test Voltage of up to 20 kV AC
Measured Parameter/Signal converted/isolated
SIL2/SIL3 safety
Key Requirements
The Most Space Saving High Voltage Transducer for Rolling Stock
The P45000 series transducers are designed for measuring high DC and AC voltages on heavy vehicles, especially rolling stock. Monitoring and control of traction motors, monitoring of DC link voltage in traction power converters or on-board converters are some application examples.
The voltage measurement input is highly isolated from output and auxiliary power. The current output is compatible with commercially available control inputs. The housing offers flexible mounting options: upright or horizontal screwed or snapped onto 35 mm DIN rails. The devices can even be mounted in a stack, allowing for very tight space requirements.
For the first time, applications with functional safety requirements can be properly carried out. The high-voltage transmitter is certified for use in SIL2 systems and, redundantly, SIL3. Thus, for example, the presence of dangerously high voltages can be reliably detected.
Product highlights for Measurements on Rolling Stock
P45000 – High Voltage Measurement
The P45000 high-voltage transducer for all DC and AC rail vehicles including diesel-electric vehicles for measurements up to 4500 V DC and 3000 V AC. Test voltage 20 kV AC and reinforced insulation up to 4800 V DC and 3700 V AC
P51000 – Current Measurement via Shunt
The P51000 transducer has been designed for verload-protected current measurements via shunt resistor from amps to kiloamps. Even strong electromagnetic fields cannot influence the measurement result. This yields highly precise current detection.
P52000 – Voltage Measurement
High voltage transducer featuring a compact design for voltage measurement up to 4800 V. High-voltage contacts and connections are encapsulated. There is no danger of interaction with other components. When dimensioning, additional space between junction blocks is no longer needed: The P52000 functions with complete safety.
P52000VPD – Voltage Presence Detection
The P52000VPD voltage presence detector is designed to perceive voltages between 50 and 4200 V. The input signal is compared to a threshold value and the resulting binary information is galvanically isolated and transmitted to the output circuit. When the input voltage exceeds the set threshold value, a solid state relay opens, signaling the presence of voltage at the input.