【填空题】
18.HXD3电力机车确认只有主牵引回路一点接地, 也可将控制电器柜上对应的接地开关打至___位,继续维持机车运行。
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相关试题
【填空题】
19.HXD3电力机车每组牵引变流器的输出回路中,设有输出电流互感器CTU、CTW,对牵引电机过载及牵引电机___起控制和监视保护作用。
【填空题】
20.HXD3电力机车上的各辅助电动机均通过各自的___与辅助变流器连接。
【填空题】
21.HXD3电力机车空气压缩机的起动受___的控制。
【填空题】
22.HXD3电力机车压缩机控制回路里,设有温度保护开关TS-1和___保护开关PS-1,通过其常闭连锁,实现对压缩机的安全保护。
【填空题】
23.HXD3电力机车采用带有中梁的、___承载的框架式车体结构,有利于提高车体的强度和刚度。
【填空题】
24.HXD3电力机车转向架二系采用___螺旋弹簧。
【填空题】
25.HXD3电力机车转向架采用整体轴箱、推挽式___等技术。
【填空题】
26.HXD3电力机车在网压22.5kV~31kV之间时,机车能发挥___功率。
【填空题】
27.HXD3电力机车大功率牵引电动机设置有___的轴流通风机。
【填空题】
28.HXD3电力机车牵引通风机设在机车机械室地板支架上,由___向主电动机送风。
【填空题】
29.在HXD3电力机车Ⅱ端机械间考虑到空气流动以及功能等问题,集中设置了空压机、空气干燥器、___、空气管路柜等设备。
【填空题】
30.在HXD3电力机车两端的顶盖上设置主电机冷却风___。
【填空题】
31.HXD3电力机车复合冷却器是由油冷和___两种方式构成。
【填空题】
32.HXD3电力机车复合冷却器用冷却风机从___进气→向车外排气。
【填空题】
33.HXD3电力机车主变流器的中间直流电路主要由, 中间电压支撑电容、瞬时过电压限制电路和___电路组成。
【填空题】
34.HXD3电力机车的牵引逆变器是由IGBT元件组成的___逆变单元。
【填空题】
35.HXD3电力机车每组牵引变流器的输入回路中,设有1个输入电流互感器ACCT,起控制和监视变流器充电电流及牵引绕组___电流的作用,其动作保护值为1960A。
【填空题】
36.HXD3电力机车主变压器牵引绕组过流保护发生时,四象限脉冲整流器和逆变器的门极均被___,输入回路中的工作接触器断开,同时向微机控制系统发出跳主断信号。
【填空题】
37.HXD3电力机车主牵引回路正常时,由于只有___点接地,接地保护电路中流过的电流为零,接地信号检测传感器无信号输出。
【填空题】
38.HXD3电力机车机车粘着控制:包括防空转.防滑行控制.轴重转移___控制。
【填空题】
39.HXD3电力机车司机电钥匙开关SA49(SA50)有两个位置:“合”、“分”,当置“合”位置时,该机车操纵室即被设定为___。
【填空题】
40.HXD3电力机车紧急制动按钮SA103(SA104)为___按钮。
【填空题】
41.CCBⅡ制动机送入TCMS的801动力切除信号:即制动机要求TCMS控制牵引变流器___功率输出。
【填空题】
42.HXD3电力机车主变流器低压试验前,应将主变流器试验开关SA75置___位。
【单选题】
HXD1电力机车每节车有___个相互独立的主传动变流系统和辅助变流系统。
A. 1
B. 2
C. 3
【单选题】
HXD1电力机车主变流器从主变压器次边取电,通过___个四象限斩波器(4QC)向两个独立的中间电压直流环节供电。
A. 2
B. 3
C. 4
【单选题】
HXD1电力机车每节车辅助变流系统由___个相同PWM逆变器组成,为机车的辅助设备供电。
A. 1
B. 2
C. 4
【单选题】
HXD1电力机车是一种___轴双节重联重载交流传动电力机车。
A. 4
B. 6
C. 8
【单选题】
HXD1电力机车转向架,采用___,构架强度高,结构合理,适合于重载牵引。
A. 侧向牵引梁
B. 低位牵引杆
C. 轴箱拉杆
【单选题】
HXD1电力机车基础制动采用___制动。
A. 轮盘
B. 闸瓦
C. 电磁
【单选题】
HXD1电力机车主变流器采用___冷IGBT模块。
A. 风
B. 水
C. 油
【单选题】
HXD1电力机车牵引电机为滚动轴承___悬挂。
A. 抱轴式
B. 架悬式
C. 体悬式
【单选题】
HXD1电力机车辅助变压器柜经过辅助变压器进行电压调整后,为机车辅助系统所有负载提供___电源。
A. 单相
B. 三相
C. 直流
【单选题】
HXD1电力机车牵引通风机由___上的百页窗吸风后,经过独立的风道,然后将冷却风吹向牵引电机,带走牵引电机工作时产生的热量。
A. 侧墙
B. 车顶
C. 走廊
【单选题】
HXD1电力机车通过冷却塔通风机从车顶吸风,通过封闭的油回路冷却___的油温。
A. 主变压器
B. 牵引电机
C. 辅助变压器
【单选题】
HXD1电力机车蓄电池充电机将机车辅助系统三相交流___电源变为直流110电源,为机车提供110V电源,并为蓄电池组充电。
A. 220
B. 396
C. 440
【单选题】
HXD1电力机车蓄电池充电机主要有___个功能。
A. 一
B. 两
C. 三
【单选题】
HXD1电力机车蓄电池充电机将直流110Ⅴ电源变为直流___电源,为应急灯、仪表等设备提供电源。
A. 12
B. 24
C. 48
【单选题】
HXD1电力机车___高压电缆上装有原边电流互感器,主要用来提供原边电流信号,同时为原边保护回路提供信号。
A. 主断路器旁
B. 机械间内
C. 主变压器上
【单选题】
HXD1电力机车当受电弓到___前的高压设备故障时,可以通过高压隔离开关进行相关的隔离操作。
A. 主断路器
B. 避雷器
C. 隔离开关
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A. That's OK.
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