Studer Innotec SA
next3
38 V 1.3 © Studer-Innotec SA next3 Tech manual
5.3.2.1 Stationary installation and neutral continuity
In a stationary installation where the neutral is connected to the earth at a single installation point
upstream of the next3, it is permissible to carry out a connection of the neutrals to preserve an
unchanged earthing system downstream, independent of the operating mode of the next3. This is
called “Solid Neutral”.
That can also be performed with the proper programming of the unit, controlling the internal earthing
relay, but it may not be accepted for security reasons. Please check your local installation rules.
Example of solid neutral connection inside of the connexion box:
Safety is guaranteed by the equipotential bonding and by any RCD circuit breakers placed
downstream.
This connexion can be done inside of the next3 with an internal relay and the proper programming.
See the earthing relay configuration in the system configuration.
This solid neutral connection is not permitted if a socket is installed upstream of the next3 (typically in
mobile application).
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