Gtec Saturn Manual Del Usuario página 79

RESIDUAL CURRENT DEVICE
In the standard version, without an input separation transformer, the neutral originating from the mains is connected to
the CPS output neutral. The system neutral point treatment is not modified:
THE INPUT NEUTRAL IS CONNECTED TO THE OUTPUT NEUTRAL
THE DISTRIBUTION SYSTEM WHICH POWERS THE CPS IS NOT MODIFIED BY THE CPS
The neutral point treatment is only modified if a barrier is present or when the CPS operates with the neutral
isolated upstream.
Ensure the correct connection of the input neutral because its absence could damage the CPS.
DUAL INPUT versions: the neutral for the input line and bypass line are shared inside the device.
A single differential switch must be fitted upstream of the point at which the line divides to supply the trip
switch-protected rectifier and bypass inputs for the CPS. See following diagram:
PARALLEL versions: In order to prevent false activations where several machines are connected in parallel,
a single differential switch should be fitted upstream of the entire system. See following diagram:
When operating with mains voltage present, a residual current device may intervene because the output circuit is not
isolated from the input circuit.
In any case, it is always possible to insert further residual current devices on the output, where possible coordinated with
those present on the input.
The residual current devices located upstream must have the following characteristics:
▪
residual current adequate for the sum of CPS + load; it is advisable to allow a suitable margin in order to avoid
inopportune interventions (500mA min) *
▪
type B
▪
delay greater of equal to 0.1s
* The load leakage current is added to that of the CPS on
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the earth protection conductor.