Electrical and Instrumentation Technician @ JESA FARM DAIRY | Electrical Troubleshooting
Reasons why Power Transformer and auxiliary transformer have different earthing/grounding:- Power transformers and auxiliary transformers have different earthings requirements due to their distinct functions and safety considerations: Power Transformer Earthing: 1. Directly connected to the power grid or main electrical distribution system. 2. Earthed to provide a safe path for fault currents. 3. Typically connected to the neutral point of the star-connected primary winding. 4. Provides protection against: - Lightning strikes - Line-to-ground faults - Overvoltages Auxiliary Transformer Earthing: 1. Supplies power to auxiliary systems, such as control circuits, lighting, and instrumentation. 2. Typically isolated from the power transformer to prevent: - Electrical noise and interference - Fault currents from affecting auxiliary systems - Voltage transients 3. Often earthed through a separate grounding system or an isolation transformer. 4. Provides protection against: - Electrical shock - Equipment damage Reasons for separate earthing: 1. Safety: Prevents electrical shock and ensures personnel safety. 2. Noise reduction: Minimizes electrical noise and interference between power and auxiliary systems. 3. Fault isolation: Prevents fault currents from spreading between systems. 4. Regulatory compliance: Meets electrical safety standards and regulations. Best practices: 1. Consult electrical engineers and safety experts. 2. Follow manufacturer recommendations. 3. Ensure proper grounding and earthing. 4. Regularly inspect and maintain earthing systems. #Powersystem
