Low-voltage switchgear 1E-class MNS

three-phasepower plantpower distribution

The 1E-class MNS low-voltage withdrawable switchgear is a novel low-voltage switchgear that meets the requirements of nuclear power station 1E and is developed by Tianan Electric on the basis of digesting and absorbing ABB's MNS switchgear technology and according to the environmental conditions of nuclear power plants. The products fully comply with the requirements of IEEE323, IEEE344, IEC60439, GB7251.1 and other standards, and are used for the power supply and control of nuclear power plant 1E low voltage power distribution, 1E low voltage load and other important facilities. Responsible for 380V/220V power distribution, system monitoring and protection, power facilities/equipment control and protection functions under normal and abnormal operating conditions of nuclear power plants, and is responsible for keeping the above functions intact under design basis event conditions during the safe life cycle Sexual safety features. • Passed national CCC certification • Passed 1E level (nuclear level) seismic test • Pass 1E level (nuclear level) anti-aging test • Pass the electromagnetic compatibility test • Three-phase integrated multi-piece combined plug is used as the primary connector, and the current carrying capacity can reach 630A • 6）8E/4 drawer can install molded case circuit breaker • The structure is compact, with a small space to accommodate more functional units, a single cabinet can accommodate up to 36 8E/4 drawer units • Safe and reliable, using isolation between regions and mutual isolation between functional units, effectively enhancing safety protection performance