Introduction
1.1 Overall Operation
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
20
Power Supply
A power supply unit (Vaux or PS) delivers power to the functional units using the different voltage levels. Voltage
dips may occur if the voltage supply system (substation battery) becomes short-circuited. Usually, they are
bridged by a capacitor (see also Technical Data).
A buffer battery is located under the flap at the lower end of the front cover.
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