发布时间：2023-12-18 来源：/ 浏览量：
Currently, in the low-voltage distribution working environment of power plants and residential buildings, drawer type low-voltage switchgear is widely used, especially MNS drawer type low-voltage switchgear has been widely used. Although there are many manufacturers in the industry that produce MNS low-voltage drawer cabinets, their technology and quality are uneven, and there are safety hazards in the design and assembly of drawer type switchgear. Below is a brief analysis of other fault causes of MNS low-voltage drawer cabinets.
In use, the temperature inside the cabinet is too high, high load operation, prolonged conductor flow, lack of maintenance in the cabinet, resulting in severe dust accumulation, poor overall heat dissipation, lack of dehumidification, lack of air conditioning and refrigeration facilities in the distribution room, high temperature operation of the switch body and wires, resulting in overall performance degradation, shortened service life, and aging of equipment and circuits, all of which can cause faults in the low-voltage cabinet. Since its official operation, the distribution room has been in continuous operation for more than ten years. Due to operating conditions that do not meet the power outage inspection conditions, the core components have not been maintained, tested and replaced in a timely manner, the circuit has aged, and the service life has decreased. The wires for the incoming and outgoing lines in the drawer cabinet should be ordinary low-voltage cables or copper bars wrapped with insulated heat shrink tubes, and installed according to relevant national standards. The distribution room should ensure that the equipment monitoring system is turned on, In order to access and check the operational status of the device.
Statistical analysis of historical data, benchmarking of actual operating data, timely detection of anomalies, elimination of hidden dangers, and strengthening of the management of the supply and exhaust system in the distribution room. The power and efficiency of the supply and exhaust system should meet the requirements of normal operation. The quality of the low-voltage cabinets in the distribution room should be regularly checked, especially internal switches, copper wires, and connectors, and core components should be replaced if necessary. The loads carried by the distribution room should be classified and marked one by one. Necessary protective devices should be added for very important and important loads, and targeted operation and inspection plans should be developed and implemented. Regular inspections should be organized by operation and maintenance personnel and distribution room management personnel. Effective skill training, such as knowledge of power distribution room operation and maintenance, emergency response, safety protection, etc., and regular emergency drills and practical assessments are conducted to comprehensively improve personnel's skills and abilities in handling emergencies.
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