Peut transformateurs être soudé avec de l'huile pour la réparation?
Can transformers be welded with oil for repair? The repair of oil leakage in transformer welding lines is a crucial task for operating personnel. If welding repairs are conducted during a power outage with oil drainage, the transformer body remains inside the oil tank. As the insulation on the transformer...
Pourquoi est-il nécessaire de remplir d'azote et démonter les composants tels que les boyaux pendant le transport? Et pourquoi est-il nécessaire de retirer le réservoir à huile et de la sécurité conduit au cours de l'aspirateur à injection d'huile?
Why is it necessary to fill nitrogen and dismantle components such as casings during transportation? And why is it required to remove the oil storage tank and safety duct during vacuum oil injection? When the transport weight of a large transformer exceeds the carrying capacity of the transport vehicle, it...
Quelles sont les caractéristiques des trois couramment utilisés configurations d'enroulement de transformateurs?
What are the characteristics of the three commonly used winding configurations in transformers? (1) Y-shaped winding characteristics: The Y-shaped winding has a winding current equal to the line current, with a larger wire cross-section, providing excellent mechanical strength. The winding voltage is equal to 1/√3 times the line voltage, resulting...
Ce qui doit être noté lors de la soudure des fils pour les transformateurs avec une tension de 60kV et ci-dessus?
What should be noted during the welding of leads for transformers with a voltage of 60kV and above? When welding leads for transformers with a voltage of 60kV and above, the following precautions should be taken: Before welding the leads, it is essential to wrap the base of the leads...
Comment est l'air chaud de séchage par le vide méthode conduit?
How is the hot air vacuum drying method conducted? The hot air vacuum drying method is currently a widely adopted process. In this method, hot air with a temperature ranging from 105 to 130°C is introduced into a vacuum tank to heat the apparatus, ensuring uniform heating of its interior...
Quel est l'impact de l'altitude sur le fonctionnement des transformateurs?
What impact does altitude have on the operation of transformers? In areas where the altitude does not exceed 1000 meters, transformers can operate without considering the altitude factor. However, in regions with altitudes above 1000 meters, transformers must take into account the impact of thin air on heat dissipation and...
Comment est la protection du parafoudre au point neutre du transformateur réalisé?
How is the protection of the lightning arrester at the neutral point of the transformer carried out? For transformers operating in a system with an effectively grounded neutral point, if the neutral point is not grounded, a lightning arrester should be installed at the neutral point. Similarly, for transformers operating...
Quelle est la fonction de l'évent de sécurité d'un transformateur?
What is the function of the safety vent of a transformer? The safety vent, commonly referred to as an explosion-proof tube in the power supply industry, is a traditional protective device that is rarely used in newly designed transformers. Its main function is to rapidly release a large amount of...
Comment est-Externe Tension de tenue Test effectué?
How is the External Withstand Voltage Test conducted? The External Withstand Voltage Test is a one-minute AC high-voltage test conducted on the tested transformer, also known as the AC Withstand Voltage Test. This test is employed to assess the insulation performance between different winding sides and between windings and ground,...
Quels sont les types de capacitif bagues sont là?
What types of capacitive bushings are there? For voltage levels of 110kV and above, using oil-immersed bushings would result in excessively large dimensions. Therefore, it is necessary to employ solid insulation manufactured based on the principle of capacitive voltage division as the primary insulation, namely by using a capacitive core....
Quel est le concept de base de surtension?
What is the basic concept of overvoltage? In the operation of various electrical equipment in power systems, besides withstanding normal system voltages, they also encounter various types of overvoltages. Overvoltages are generally classified into two categories based on their sources: external overvoltages and internal overvoltages. External overvoltages typically refer to...
Ce sont la routine de tests électriques pour transformateurs?
What are the routine electrical tests for transformers? 1. Voltage Ratio Test: Used to verify the voltage ratio and detect faults such as winding inter-turn or inter-layer short circuits, and check if switch leads are connected incorrectly. 2. Winding Resistance Measurement: Determines the quality of wire welding, detects faults such...
