H - Electricity – 02 – H
Patent
H - Electricity
02
H
317/6.5
H02H 7/16 (2006.01) G05F 1/70 (2006.01) H02J 3/18 (2006.01)
Patent
CA 1158711
Case 2512 ALARM AND CONTROL SYSTEM FOR HIGH VOLTAGES CAPACITOR BANK ABSTRACT OF THE DISCLOSURE The present invention relates to an alarm and control system for a capacitor bank which is connected in shunt circuit relation with a highvvoltage direct current power supply. The capacitor bank comprises a plurality of serially connected groups of capacitors where each capacitor of a group is connected in parallel circuit relation. The alarm and control system comprises a plurality of branch circuits each including a grading resistor and a light source emits are connected in series. The light source emits light in response to an electrical current passing through the source. Each of the branch circuits is connected in shunt circuit relation with a respective one of the capacitor group such that the occurrence of a short circuit or low impedance in one of the capacitors of the group causes electrical current flow to bypass the respective branch circuit which result in no light being emitted from the light source. The system includes optical to electrical converter for converting light emitted from the light sources into corresponding electrical signals and includes a control circuit which in response to the presence of all but a predetermined number of electrical signals generates an alarm signal and a control signal. The power supply in response to the generation of a control signal may discontinue power transmission.
370912
Canadian General Electric Company Limited
Eckersley Raymond A.
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