2022-12-09 15:21:11
Most companies possess automated machinery and equipment,Electromechanical installationThe industry emerged accordingly. Installation of equipment, lines, pipelines, substations of 35kV and below, and production and installation of non-standard steel components are usually industrial, public, and civil construction projects. Electromechanical installation engineering is a large-scale project. Some large companies relocate, and a single project can take nearly half a year. Moreover, compared to the technical requirements for installation, the requirements are also very high. The project includes industrial boilers, ventilation and air conditioning, refrigeration, electrical equipment, instrumentation, motors, compressor units, broadcasting, film, television, and broadcast control equipment.
(1) When installing isolating switches for electromechanical equipment, insufficient contact force at moving (static) contacts or improper operation may cause electrical oxidation of the contact surfaces, increasing circuit resistance and contacts, and causing fires and other accidents.
(2) During the installation and maintenance of current transformers, accidentally opening a winding resistor can easily generate excessive voltage, seriously endangering life and equipment safety.
(3) Due to incorrect arc contact type or installation of the circuit breaker, the insertion stroke, opening speed, contact force, and synchronization do not meet design requirements, because...Installation of electromechanical equipmentAs the arc extinguishing time increases due to overheating, the contacts decompose the insulation material, causing voltage surges that cause circuit breaker explosions.
(4) Due to installation errors in the adjustment device mechanism or debris generated during assembly, the mechanism cannot operate normally and may cause varying degrees of accidents.
(5) Grounding accidents and short circuits occur inside the main transformer or on the outgoing side to ensure the circuit breaker fails to connect and power outages. Therefore, due to large short-circuit currents, short circuit accidents increase, causing the internal temperature of the main transformer to spike, and transformer oil to rapidly evaporate and decompose into explosive and flammable substances, resulting in serious explosion accidents.
(6) When installing the main transformer core or high-voltage pipes, if keys, nuts, or other debris or waterproof sleeves accidentally fall in, the device body drains incompletely, the sealing device is installed incorrectly or not properly damaged, all of which reduce the insulation strength of the main transformer, causing local insulation damage or penetration, and leading to abnormal accidents.
