Name: WITT PÜWE
SKU: 00000093

WITT PÜWE

Guideline VN 37 Earthing and measures for protection against dangerous body currents in distribution networks up to 10 kV.

WITT PÜWE meets the requirements of the V37 directive
If the values specified in guideline V37 are exceeded, the WITT PÜWE responds and short-circuits the potentials.
Potential-free contacts are used for signaling.
The PÜWE is designed for wall mounting.
All parameters are stored in the factory settings so that you can use them directly.

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

Application

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

Digital values

The following messages are generated by the WITT PÜWE and are available on potential-free contacts:

Operation WITT PÜWE in normal operation, open
Short circuit WITT PÜWE is closed
Error PÜWE has carried out more than 5 switching operations per hour
Overtemperature WITT PÜWE Internal temperature has reached the limit value, device is inactive