Low voltage drawer switchgear low voltage distribution board low voltage metal clad switchgear

Product knowledge

Precautions for the operation and maintenance of the low-voltage PDC 1, the maintenance and overhaul of electrical equipment should be carried out in principle, and returned to the circuit for work. 2. The front and back channels of the low-voltage distribution cabinet should be covered with insulated rubber carpet, the channels should be stored without debris, the lighting is bright, and the leakage of the house should be treated in time. The import and export of buried cables shall be prevented from blocking the entry of small animals. 3, in the peak load current situation, should check the electrical connection for overheating discoloration phenomenon. Conditions can be used infrared temperature detection, and make a record. 4, the secondary circuit wiring is neat, the line end number is correct and consistent with the drawing. 5, low-voltage distribution cabinet, in the operation of the cabinet name, sign, number is clear and correct, operation handle, button and other positions in line with the actual situation, signal light, mechanical signs are correct. 6, the instrument indication is correct and consistent with the transformer change. 7. Whether the use current and rated current of the low-voltage breaker meet the design requirements. Whether the core specifications meet the design. 8, use 1000V megohm meter to measure the insulation resistance value is not less than 1 megohm. 9, drawer type distribution cabinet, drawer pulling should be flexible, light, no blocking and collision phenomenon. The mechanical or electrical interlocking device should operate correctly, and the lock or release should be reliable. The same type of unit is interchangeable. 10, the secondary circuit wire insulation is damaged, aging, hot melt and other conditions. 11, bus connection and main electrical connection, or contact connection, whether reliable, fastening bolts are loose. 12. Whether the operating mechanism of electrical components is flexible, and there should be no carvin or excessive operating force. 13. Before installation and operation of the power distribution cabinet, check whether the surface coating of the cabinet is damaged, whether the cabinet is dry and clean, whether the arrangement is neat, whether the cabinet is fixed firmly with the foundation, whether the grounding is good, and whether the cabinet door can be locked properly.

Low voltage drawer switchgear low voltage distribution board low voltage metal clad switchgear