High-low voltage electrical equipment fault handling method - Database & Sql Blog Articles

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To ensure the safe and efficient operation of both high-voltage and low-voltage electrical equipment, it is essential to implement proper maintenance and troubleshooting procedures. The following guidelines are established to help manage and maintain the reliability of all electrical systems: 1. **High-Voltage Equipment Management** The main goal of troubleshooting in high-voltage systems is to quickly contain any incidents, eliminate potential risks to personnel and equipment, and address the root cause of the problem. When a substation failure occurs, on-duty personnel must promptly report key details such as the time of the incident, observed phenomena, equipment names and numbers, tripped switches, relay protection actions, and ambient voltage levels. In case of an emergency, the duty officer should first assess the situation using meter readings and visible signs of the equipment. If there is an immediate danger, they should take necessary actions, including shutting down the equipment if required. During repairs, all replacements must strictly follow the "Specifications," and detailed records should be kept for future reference. In the event of a fire involving live equipment, only dry powder, carbon dioxide, or 1211 fire extinguishers should be used. Foam extinguishers are strictly prohibited due to the risk of electric shock. 2. **Low-Voltage Equipment Maintenance** On-duty electricians are expected to have a strong understanding of electrical systems and maintain a proactive approach by conducting regular inspections. They should accurately determine if equipment is overloaded based on meter readings and report any issues immediately. In cases where transformers are at risk, power can be redirected from non-critical areas to avoid overloads. Low-voltage components such as circuit breakers, contactors, and knife switches are prone to malfunction due to frequent use. Duty electricians must perform thorough checks and apply timely maintenance. Before any repair work, insulated gloves and shoes must be worn, and the power supply must be disconnected and verified to be off before proceeding. Common issues with low-voltage wiring include overheating, aging insulation, and damage caused by chemical exposure. These problems should be addressed promptly according to production needs, and temporary wiring should only be installed when necessary and in strict compliance with safety regulations. Motor failures often result from phase loss or overload conditions. To prevent these, thermal protection settings must be properly adjusted to match the motor's current rating. Overall, on-duty electricians are encouraged to conduct thorough inspections and remain vigilant in their responsibilities. In case of electrical fires, it is crucial to use the correct type of fire extinguisher as outlined above. Proper training and awareness are essential to ensure quick and safe responses during emergencies.