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

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To ensure the safe and stable operation of high and low voltage electrical equipment, it is essential to implement proper management and maintenance procedures. Below are the detailed guidelines for both high-voltage and low-voltage systems: For the high-voltage section: 1. The main goal of troubleshooting is to quickly contain any potential accidents and eliminate any risks to personnel and equipment. This includes identifying and addressing the root causes of incidents. 2. In case of a substation failure, on-duty personnel must promptly report the time of the incident, its symptoms, the name and number of affected equipment, circuit breakers that tripped, relay protection actions, and the ambient voltage. 3. When an accident occurs, the duty officer should first assess the situation using meter readings and visible signs of equipment malfunction. If there's an immediate danger to people or equipment, they should act swiftly—possibly stopping the equipment if necessary. 4. During repairs, any damaged components must be replaced according to official specifications. All work should be thoroughly documented in the maintenance log. 5. 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 forbidden due to the risk of electric shock. For the low-voltage section: 1. On-duty electricians must maintain a strong sense of responsibility and continuously improve their technical knowledge. Regular inspections are crucial to prevent issues before they occur. 2. Electricians should monitor equipment load using meters. If overloading is detected, they should report it immediately. In critical situations, such as when a transformer is at risk, power can be temporarily reduced in non-essential areas. 3. Low-voltage devices like switches, circuit breakers, and contactors are prone to failure due to frequent use. Duty electricians must conduct regular checks and perform timely maintenance. Before working on any equipment, they must wear insulated gloves and shoes, and verify that the power is off before proceeding. 4. Common issues with low-voltage wiring include overheating, aging insulation, and damage from chemical exposure. These problems should be addressed promptly based on production needs. Temporary wiring may be installed when necessary, but it must follow all relevant low-voltage safety regulations. 5. Motor failures often result from phase loss or overloading. To prevent these issues, thermal protection settings must be properly adjusted to match the motor’s current rating. In summary, on-duty electricians must remain vigilant, perform thorough inspections, and take full responsibility for the safety and reliability of the system. 6. In case of an electrical fire, the correct type of fire extinguisher should be used as outlined above to minimize damage and ensure safety.