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How the Oil Surge Relay works? How it protect the OLTC?
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Answer Posted / n. manohara rao
THE OIL SURGE RELAY IS CONNECTED IN BETWEEN OLTC CHAMBER AND CONSERVATOR (SEPARATE FOR FOR OLTC) WITH BREATHER. A SEPAATION SHOULD BE ARRANGE SUCH THAT THE OIL IN OLTC CHAMBER AND TRANSFORMER CHAMBER SHOULD NOT BE MIXED TOGETHER. IN CASE ANY ON LOAD TAPCHANGER A PROBLEMS DEVELOPED DURING OPERATION A GAS IS DEVELOPED AND THAT GAS WILL ACTUTE THE OIL SURGE RELAY AND AND THE RELAY ACTIVATES OTHER CIRCUITS AND MAIN CIRCUIT HT WILL BE OPNED WITH ALARAM INDICATION AND FLAG INDICATION
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