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LW10B-550
LW10B-550

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PINGGAO GROUP HIGH VOLTAGE SWITCHGEAR CO.,LTD.

Pingdingshan,Henan,China

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LW10B-550

1.General DescriptionLW10B-550 SF6 circuit breaker consists one post, two interrupters and one mechanism each pole. It could operate in single-pole mode and in three-pole mode as well. Tested in CESI, Italy, the equipment was put into service in the year of 1998. Since then, there have been more than 1 000 sets servicing in the power system. Furthermore the equipment has been sold to Iran, Iraq and India.2.Main technical DataTechnical parameters 1: CBItem Unit Value CY YT , CYT Rated voltage kV 550 Rated frequency Hz 50 Rated current A 3150 4000 Rated short-circuit breaking current kA 50 63 Short-line fault breaking current kA 45 56.7 Rated out-of-phase breaking current kA 12.5 15.75 Rated peak withstand current kA 125 160 Rated short-circuit making current (peak) kA 125 160 Rated short-time withstand current kA 50 63 Rated short-circuit duration s 3 Rated line charging breaking current (rms) A 500 5 min power-frequency withstand voltage at zero ga

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