Battery And Capacitor Test Facility Of The Recloser - Siemens 7SR224 Technical Manual

7SR224 Argus Description of Operation

2.12 Battery And Capacitor Test Facility Of The Recloser

The quiescent battery voltage V is constantly monitored to ensure that the charging system is connected and
AUX
operating correctly. The capacitor voltage is monitored externally by the Switch Unit Driver and Monitor. The
healthy condition of the capacitor is indicated to the Controller by the state of two binary signals. These signals
are constantly monitored and used to provide alarms and operation blocking for quiescent capacitor voltage levels
which are out of limits.
Battery and capacitor tests are initiated at user set intervals - typically once per week/month. The condition and
state of the Recloser battery and Recloser capacitor are assessed; any unhealthy states are identified and can be
alarmed. Battery and capacitor tests are not carried out at the same time. The battery test is initiated first to avoid
any possible interaction with the capacitor test which is performed 30 minutes afterwards.
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