發電機(ji)組專業(ye)術語(yu)中(zhong)英文(wen)對(dui)照大全（U、V、W、Z）

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.

下超調

下超(chao)調指(zhi)電壓(ya)調整(zheng)器或(huo)控(kong)制器在(zai)應(ying)對負荷變化時，電壓(ya)或(huo)頻率低于額定的量。

Utility

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

市電

市電(dian)(dian)是(shi)商業電(dian)(dian)源，從(cong)大型中央電(dian)(dian)站(zhan)向(xiang)各設施(shi)供電(dian)(dian)。

V

Voltage 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.

電壓控制

電(dian)壓(ya)(ya)控(kong)制(zhi)是設定電(dian)壓(ya)(ya)調整器的運(yun)行點(dian)從而在設計范圍內控(kong)制(zhi)發電(dian)機組的輸出(chu)電(dian)壓(ya)(ya)的變阻器。

Voltage Dip

Voltage 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.

電壓暫降

電壓暫降(jiang)是(shi)在負荷增加而調整器(qi)還未能進行校正時、或電壓調整器(qi)正在為過載(zai)的(de)發動機(ji)卸載(zai)時出現的(de)電壓下降(jiang)。

Voltage Regulation

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

電壓調整率

電(dian)壓調(diao)整率(lv)描述(shu)的是最(zui)大和最(zui)小(xiao)穩態電(dian)壓差與額定電(dian)壓之間的百分比。

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.

電度表

電(dian)度表記錄系統(tong)中(zhong)某一點的總電(dian)力輸出，通常以千瓦時為記錄單位。

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連接

Y連(lian)接(jie)(jie)就是星形連(lian)接(jie)(jie)，也(ye)就是把三相(xiang)系(xi)統(tong)中(zhong)的相(xiang)按照(zhao)字母Y的形狀連(lian)接(jie)(jie)起來，還可(ke)以(yi)在中(zhong)心點接(jie)(jie)上第(di)四(si)根（中(zhong)性）線。

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.

零序

零序是一(yi)(yi)種接(jie)地(di)故障檢測方法，它使用一(yi)(yi)個傳(chuan)感器（CT）來(lai)把所有相導體和中性導體連接(jie)在一(yi)(yi)起，傳(chuan)感器會按照線路中接(jie)地(di)故障電流的不(bu)平(ping)衡程(cheng)度(du)等比例地(di)產生輸出(chu)，再由一(yi)(yi)臺(tai)繼(ji)電器來(lai)測量這(zhe)一(yi)(yi)輸出(chu)，并斷(duan)(duan)開斷(duan)(duan)路器或(huo)釋放接(jie)地(di)故障警報。