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Please kindly recommend the top 3 manufacturers of medium voltage and high voltage switchgear 66 kV SWITCHGEAR HV system consists of: • Withdrawable circuit breaker pc 1 • Earthing switch pcs 2 • Voltage transformer pcs 3 • Current transformer pcs 3 • Surge arrester pc 3 • Joining material set 1 • Steel construction set 1 The 66 kV switchgear system is placed indoor, in a separate room. It comprises of a withdrawable live tank circuit breaker, including both breaking and disconnecting function, together with instrument transformers. 72,5kV THREE‐PHSE SF6 CIRCUIT BREAKER, 3P OPERATION Brief performance description: • Installation: Outdoor/Indoor • Type: Withdrawable, disconnecting function SF6 • Power frequency: 50 Hz • Rated voltage: 72,5 kV • Rated current: 2000 A • Rated breaking circuit: 25 kA • Operation type: 3pole 72,5kV SUBSTATION EARTH SWITCH Brief performance description: • Installation: Outdoor/Indoor • Power frequency: 50 Hz • Rated voltage: 72,5 kV • Rated current: 2000 A • Operating mechanism: Manual or motor Medium voltage switchgear panel used for connection of generators, generator synchronisation, power supply of station service system, voltage and current metering and connection to common step-up transformer outgoing for evacuation of generated power to grid. Equipment: Metal-enclosed, modular MV switchgear, for indoor installation, with routine tests, without type, factory-acceptance and special tests, made up of modular units with main characteristics listed below. Configuration • According to SLD Main technical data: • Nominal system voltage: 10 kV • Rated voltage: 24 kV@ 1000 m a.s.l. • short-duration power-frequency withstand voltage: 50/60 kV @ 1000 m a.s.l. Lightning impulse withstand voltage 125/145 kV @ 1000 m a.s.l. • Rated frequency: 50 Hz • Rated current, busbar: 630 A • Short-circuit withstand current: 25 kA (1 s) • Busbar insulation: AIS • Circuit breaker type: Vacuum, E2, M2 • Auxiliary voltage: DC 110 V, DC 24 V, AC 230 V • Installation Ind I would like communication by email

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