low-voltage electrical system consisting of a distribution network and an electrical installation
Note 1 to entry: The distribution system usually includes an electrical installation of building which is connected to the low-voltage distribution network consisting of a step-down transformer substation and an overhead line or an underground cable (see Figure B.1).
Note 2 to entry: The smallest distribution system includes a power source and one item of a current-using equipment (see Figure B.2).
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