Faults in the Auxiliary Equipments

Faults in the Auxiliary Equipments: These faults argon usually minor faults. They do non affect the transformer immediately but, if allowed to persist, these may cause tho fault to the transformer. So, before they cause any damage to transformer they must(prenominal) be detected and rectified. Following are the various faults in supplementary equipments- 1. Oil Leakage in the Transformer Tank: If the ve imbibeable vegetable anele colour leaks from the transformer tank due to some reason, the oil direct in the tank drops, this result increase the temperature of the windings, would damage the insulation of the windings. consequently conservator tank is provided with an oil level indicant having an solicitude facility. If the oil level drops below a mold level, the warning signal will ring. It allows the operator to initiate incumbent actions. 2. Failure of public exposure system: The temperature of oil and windings will increase due to disappoi ntment of the temperature reduction system of the transformer. The cooling system may discover due to blocking of the radiator, ruefulness of oil pumps or failure of some/all fans. So, an oil temperature indicator with alarm and trigger off facilities along with a winding temperature indicator having similar facilities are used to deflect damage to the transformer by overthaw. 3.

Weakening of insulation in the thick of Laminations of essence and core bolts: Weakening of insulation between core and core bolts will result in increase gimmick current losses and hence rise in the temperature of core. T his may, consequently, deal to the insulat! ion failure of the windings. 4. Improper joints and connections: Local heating generated by improper joints or connections may slowly lead to a deterioration of the oil if joints are oil immersed. oil temperature indicator and winding temperature indicators are used to indicate such(prenominal) problems. 5. Inter- turn faults: If tho few turns of any of the windings are shorted, the electric relays will not operate but the overheating caused by the fault...If you want to get a full essay, order it on our website: BestEssayCheap.com

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