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 in force(p) 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 subsidiary equipments- 1. Oil Leakage in the Transformer Tank: If the ve line upable cover colour leaks from the transformer tank due to some reason, the anoint direct in the tank drops, this willing increase the temperature of the windings, would damage the dissipation of the windings. consequently conservator tank is provided with an oil level index having an solicitude facility. If the oil level drops below a regulate level, the warning signal will ring. It allows the operator to initiate essential actions. 2. Failure of public exposure system: The temperature of oil and windings will increase due to disappoi ntment of the cooling system of the transformer. The cooling system may discover due to blocking of the radiator, lugubriousness of oil pumps or failure of some/all fans. So, an oil temperature index number with alarm and trigger off facilities along with a winding temperature indicator having similar facilities are used to keep down damage to the transformer by overthaw. 3.

Weakening of insulation in the middle of Laminations of event and core bolts: Weakening of insulation between core and core bolts will result in increase winding current losses and hence rise in the temperature of core. This may, consequently, c arry to the insulation failure of the windin! gs. 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 notwithstanding 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

If you want to get a full essay, visit our page: cheap essay