SMARTE Messtechnik für Gleichstrom – Spannung – Kabel – Isolation
Guideline VN 37 Earthing and measures for protection against dangerous body currents in distribution networks up to 10 kV.
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| Approvals | Witt |
|---|---|
| Standard | Customer requirement, EN 50121-05, EN 50122-02, EN 50123-01, EN 50163, EN 50526-02 |
| DC System voltage (UA) | 750 V DC |
| Auxiliary voltage | 110 V DC, 240 V / 50 Hz, 60 V DC |
| Protection class EN 60529 | Witt, Witt |
Below you can read about the typical areas of application of the system:
To reduce excessive touch voltage on the premises of Deutsche Bundesbahn AG, an existing PÜWE (potential monitoring device) or an EKS (Earthing short-circuiter) switches on at a voltage difference of > 50 V and briefly connects the network operator’s PEN system to the railroad earthing system, if appropriate switching devices are available. The temporary connection of the earthing systems of the network operator and the railroad reduces the total earthing resistance and thus the touch voltage. Fault rectification must be arranged. Before working within these systems, the PÜWE or the EKS must always be switched on.
Find out more at Stromnetz Berlin GmbH
Guideline VN37 Earthing and measures for protection against dangerous body currents in distribution networks up to 10 kV
The following messages are generated by the WITT PÜWE and are available on potential-free contacts:
Here you will find an overview of products and services for the monitoring and equalization of potential imbalances with the WITT EscS systems.
The testing device „WITT EKS 1000 P“ is used for testing of switching behavior of VLD.
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Witt Solutions GmbH offers different installations for walls for VLD systems incl. mounting.
monitors DC and AC voltage differences between the return conductor of the traction current
monitors direct current – contact line voltages up to 750 VDC – fixed threshold values – no auxiliary voltage
Brief description of the project …
