Siemens 7SJ82 Manual page 41

Power Supply
The individual functional units of the device are powered by an internal power supply. Brief interruptions in
the supply voltage, which can occur during short circuits in the system auxiliary voltage supply are generally
bridged by capacitor storage (see also the Technical Data).
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
Introduction
1.1 General
41