发电机专业术语(英语词汇十三)

发电机专业术语（英语词汇十三）

Terminator

A resistive load placed at the end of a cable to prevent data signals from reflecting back into the data path.

终结器

终结器就是置于电缆终端的一个电阻负荷，用来防止数据信号又反射回到线路中去。Transfer Switch

A transfer switch is an electrical device for switching loads between alternate power sources. An automatic transfer switch monitors the condition of the sources and connects the load to the alternate source if the preferred source fails.

转换开关

转换开关是能够把负载在备用电源和常规电源之间进行转换的电气设施。自动转换开关能够进行监控，如果首选电源供应失败，就自动把负载连接到备用电源。

u

Undershoot

Undershoot refers to the amount by which voltage or frequency drops below the nominal value as the voltage regulator or governor responds to changes in load.

下超调

下超调指电压调整器或控制器在应对负荷变化时，电压或频率低于额定的量。

Utility

The utility is a commercial power source that supplies electrical power to specific facilities from a large central power plant.

市电

市电是商业电源，从大型中央电站向各设施供电。

V

V oltage Control

The voltage control is a rheostat that sets the operating point of the voltage regulator and therefore controls the output voltage of the generator set, within its design limits.

电压控制

电压控制是设定电压调整器的运行点从而在设计范围内控制发电机组的输出电压的变阻器。

V oltage Dip

V oltage dip is the dip in voltage that results when a load is added, occurring before the regulator can correct it, or resulting from the functioning of the voltage regulator to unload an overloaded engine-generator.

电压暂降

电压暂降是在负荷增加而调整器还未能进行校正时、或电压调整器正在为过载的发动机卸载时出现的电压下降。

V oltage Regulation

V oltage regulation is a measure that states the difference between maximum and minimum steady-state voltage as a percentage of nominal voltage.

电压调整率

电压调整率描述的是最大和最小稳态电压差与额定电压之间的百分比。

W

Watt-Hour Meter

A watt-hour meter records the total power output at a specific point in a system. Typical recording increment is in kW-hours.

电度表

电度表记录系统中某一点的总电力输出，通常以千瓦时为记录单位。

Wye Connections

A Wye connection is the same as a star connection. It is a method of interconnecting the phases of a three-phase system to form a configuration resembling the letter Y. A fourth (neutral) wire can be connected at the center point.

Y连接

Y连接就是星形连接，也就是把三相系统中的相按照字母Y的形状连接起来，还可以在中心点接上第四根（中性）线。

Z

Zero Sequence

Zero sequence is a method of ground fault detection that utilizes a sensor (CT) that encircles all the phase conductors as well as the neutral conductors. The sensor will produce an output proportional to the imbalance of ground fault current in the circuit. This output is then measured by a relay to initiate circuit breaker tripping or ground fault alarm.