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新余市坝下二级电站是1996年开始进行电气安装的,1997年10月份投产运行,该站总装机为4×400kW,采用的是二机一变的扩大单元接线,高压为10kV,低压为0.4kV。主变低压侧采用的是DW15-2500型的自动空气开关,用于开断和保护主变。发电机出口采用的是DW15-1500型的自动空气开关,开断和保护发电机。两种开关均采用直流电机弹簧贮能。在试运行过程中发现主变的DW15-2500型开关贮能到位后电动机不能自动停止,仍在不断地转动,而发电机出口的DW15-1500型开关贮能运行正常。我们对DW15-2500型开关贮能
Xinyu City dam under the second power plant was started in 1996 for electrical installation, put into operation in October 1997, the station’s total installed capacity of 4 × 400kW, using a two-to-one expansion unit wiring, high voltage of 10kV, low voltage 0.4kV. Low voltage side of the main transformer is used DW15-2500 automatic air switch for breaking and protecting the main transformer. Generator outlet is used DW15-1500-type automatic air switch, breaking and protecting the generator. Two switches are used DC motor spring energy storage. Found in the trial operation of the main transformer DW15-2500 type switch energy storage in place after the motor can not stop automatically, still continue to rotate, while the generator outlet DW15-1500 type switch energy storage operation. We type DW15-2500 switch energy storage