《电机和设备》求取 ⇩

1 TRANSFORMERS AND REGULATORS1

1-1 Introduction1

CONTENTS1

1-2 Theory of Operation:No Load2

1-3 Operation under Load4

1-4 Ratings6

1-5 Transformer Construction9

1-6 Transformer Losses and Efficiency11

1-8 Transformer Cooling12

1-7 Transformer Impedance12

1-9 Instrument Transformers14

1-10 Potential Transformers15

1-11 Current Transformers16

1-12 Autotransformens19

1-13 Feeder-Voltage Regulators21

1-14 Voltage Regulator Principle22

2-1 Construction24

2 ALTERNATING-CURRENT GENERATORS24

2-2 AC Generator Excitation29

2-3 Voltage Generation31

2-4 Generator Regulation33

2-5 Generator Voltage Regulators35

2-6 Paralleling Generators;Synchronizing38

2-7 Parallel Operation43

3 POLYPHASE INDUCTION MOTORS45

3-1 Construction45

3-2 The Rotating Magnetic Field49

3-3 Speed of the Rotating Magnetic Field52

3-4 Principle of Operation53

3-5 Speed and Slip55

3-6 Rotor Frequency56

3-7 Torque and Speed of an Induction Motor57

2-4 发电机的电压调节率 157

3-9 Starting Conditions61

3-8 Effect of Load on Power Factor61

3-10 The Double-Squirrel-Cage Motor63

3-11 The Wound-Rotor Motor64

3-12 Speed Control of Squirrel-Cage Motors66

3-13 Starting Induction Motors67

3-14 Across-the-Line Starters69

3-15 Primary-Resistor Starters69

3-16 Autotransformer Starters72

3-17 Part-Winding and Wye-Delta Starters74

3-18 Induction-Motor Losses,Efficiency,and Ratings76

4 SYNCHRONOUS MOTORS78

4-1 Operation of the Synchronous Motor78

4-2 Starting a Synchronous Motor80

4-3 Synchronous Motor Excitation81

4-4 Effect of Load on a Synchronous Motor83

4-5 Power Factor;Effect of Changing Field Excitation86

4-6 Efficiency and Ratings88

4-7 Application of Synchronous Motors89

4-8 Power-Factor Correction89

5 CIRCUIT-PROTECTIVE AND SWITCHING EQUIP-MENT5-1 Short Circuits and Interrupting Rating94

5-2 Electrical Distribution Systems98

5-3 Low-Voltage Fuses101

5-4 Safety Switches104

5-5 Low-Voltage Air Circuit Breakers106

5-6 Panelboards115

5-7 Metal-enclosed Low-Voltage Air-Circuit-Breaker Switchgear118

5-8 Load-Center Unit Substations120

5-9 High-Voltage Fuses122

5-10 High-Voltage Circuit Breakers125

5-11 Protective Relays128

5-12 Metal-clad Switchgear134

5-13 Outdoor Substations136

5-14 Lightning Arresters137

1-1 引言139

参考译文139

1 变压器和调节器139

1-2 工作原理：无载运行140

1-3 负载运行141

1-4 额定值143

1-5 变压器的结构144

1-6 变压器的损耗及效率145

1-7 变压器阻抗146

1-8 变压器的冷却146

1-9 仪表变压器147

1-10 电压互感器147

1-11 电流互感器148

1-12 自耦变压器149

1-13 馈电线路电压调节器151

1-14 电压调节器原理152

2 交流发电机153

2-1 结构153

2-2 交流发电机的励磁155

2-3 电压的产生156

2-5 发电机电压调节器159

2-6 发电机的并列;整步160

2-7 并列运行163

3 多相感应电动机165

3-1 构造165

3-2 旋转磁场167

3-3 旋转磁场的速度168

3-4 工作原理169

3-5 转速和转差171

3-6 转子频率172

3-7 感应电动机的转矩和转速172

3-8 负载对功率因数的影响175

3-9 起动条件175

3-10 双鼠笼电动机176

3-11 绕线式-转子电动机177

3-12 鼠笼式电动机的速度控制178

3-13 感应电动机的起动179

3-14 直接合到电源的（跨线）起动器180

3-15 一次方电阻器起动器181

3-16 自耦变压器起动器181

3-17 部分绕组和星-三角起动器182

3-18 感应电动机的损耗、效率和额定值183

4 同步电动机185

4-1 同步电动机的运行185

4-2 一个同步电动机的起动186

4-3 同步电动机的励磁187

4-4 负载对同步电动机的影响188

4-5 功率因数；改变磁场励磁的影响189

4-6 效率和额定值190

4-7 同步电动机的用途191

4-8 功率因数的校正192

5 电路保护设备和开关设备196

5-1 短路及遮断定额196

5-2 电力配电系统199

5-3 低压熔断器200

5-4 保安开关203

5-5 低压空气断路器204

5-6 盘式配电柜210

5-7 有金属外壳的低压空气断路器开关柜211

5-8 负载中心的单元式变电站213

5-9 高压熔断器214

5-10 高压断路器215

5-11 保护用继电器218

5-12 金属外壳开关柜221

5-13 户外变电所222

5-14 避雷器223

总词汇表225