Grid Confi Guration And Consumer Distribution - Viessmann Vitocharge VX3 Backup-Box 3PH A Installationsanleitung

2.1.4 Grid confi guration and consumer distribution

All-pole disconnection in the customer system is essential!
DANGER

TN(C)-S

TN-S

TT
DANGER
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ATTENTION: No TN-C grid allowed in the customer system!
Grid operator: 4 wire (joint PE and N)
Customer system: 5 wire (separate PE and N)
Grid operator: 5 wire (separate PE and N)
Customer system: 5 wire (separate PE and N)
Grid operator: 4 wire (no PE, only N)
Customer system: 4 wire (only N, PE has no grid connection; PE only locally)
The Automatic Transfer Switch „Vitocharge VX3 Backup-Box 3PH Typ A" enables the entire household to
be supplied by the power storage system during a mains failure.
If the loads are separated into loads with backup and loads without backup, the neutral conductors of
the two loads must NOT have an electrical connection to each other.
Schematic layout of a consumer distribution
Installationsanleitung_10016712_Viessmann_Vitocharge VX3_3PH_V1.0