A core grounding fault in a transformer refers to a short circuit or partial grounding between the transformer's iron core (magnetic core) and the ground, which can potentially lead to electrical system malfunctions. Therefore, it needs to be promptly detected and addressed. Here are some possible causes and treatment methods for core grounding faults:

Causes:

Insulation aging or damage: Aging or external damage to the transformer's insulation material can lead to a decrease in insulation capability, potentially causing core grounding.

Moisture environment: If the transformer is in a humid environment, it may result in decreased insulation, leading to core grounding faults.

Pollution or deposits: Contaminants or deposits on the insulation surface can cause a decline in insulation performance, leading to grounding faults.

Animal intrusion: Small animals such as rodents or birds may chew on insulation materials, causing faults.

Manufacturing defects: Defects in transformer manufacturing can lead to core grounding faults.

Treatment Methods:

Regular inspections: Periodically inspect the transformer, including the condition of insulation materials, external environment, and pollution.

Insulation maintenance: Maintain and clean insulation materials to ensure their proper functioning.

Insulation testing: Perform insulation tests to ensure that insulation resistance is within the normal range. If anomalies are detected, take corrective measures.

Protective measures: Take measures to prevent animal intrusion, such as installing protective covers or barriers.

Address manufacturing defects: If the fault is due to manufacturing defects, contact the manufacturer or professional technicians for repair or replacement of affected components.

Core grounding faults can have a significant impact on the electrical system; therefore, early detection and treatment are crucial. Maintaining and regularly inspecting transformers can help reduce the occurrence of such faults, enhancing the reliability of the electrical system. If a core grounding fault occurs, take immediate actions, including cutting off the power supply and repairing or replacing damaged components.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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