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问题的提出综采工作面供电电压等级的选择包括两方面的内容,一是供制造或选择设备时考虑的电压等级,二是当设备选型已定,由使用单位选择供给设备的电压等级(指设备本身具备两种电压等级者,这是一般综采电气设备都具备的)。这是两个意义不同的问题,不能混为一谈。前者是根据电压等级制造或选择设备,后者是根据设备选择供电电压。
The question put forward The comprehensive working face power supply voltage level of choice includes two aspects, one for the manufacture or selection of equipment to consider the voltage level, the second is when the equipment selection has been set by the use of units to choose the voltage level of equipment Refers to the device itself has two voltage levels, which is generally used in fully mechanized mining equipment. This is a question of two different meanings and can not be confused. The former is based on the voltage level to create or select equipment, the latter is based on equipment selection supply voltage.