The ohm is a unit of electrical resistance. One volt will cause a current of one ampere to flow through a resistance of one ohm.
歐姆
歐姆是電阻單位。1伏特的電壓通過(guò)1歐姆的電阻能產(chǎn)生1安培的電流。
One-Line Diagram
A one-line diagram is a schematic diagram of a three-phase power distribution system which uses one line to show all three phases. It is understood when using this easy to read drawing that one line represents three.
單線圖
單線圖是用一條線來(lái)表示三相電力分布系統(tǒng)的示意。，
Overcrank
Overcrank is an alarm function provided with most generator sets that indicate that the generator set has failed to start.
盤(pán)車(chē)失敗
盤(pán)車(chē)失敗是機(jī)組的預(yù)警功能，表示發(fā)電機(jī)組啟動(dòng)失敗，大多數(shù)機(jī)組都有這種功能。
Overshoot
Overshoot refers to the amount by which voltage or frequency exceeds the nominal value as the voltage regulator or governor responds to changes in load
超調(diào)
超調(diào)是指電壓調(diào)節(jié)器或控制器響應(yīng)負(fù)載的變化時(shí)，導(dǎo)致電壓或頻率超出正常值的那部分。
P
Paralleling Breaker
A paralleling breaker is the circuit breaker that connects the generator set to the emergency bus, and across which all the individual generator synchronizing functions occur.
并聯(lián)開(kāi)關(guān)
并聯(lián)開(kāi)關(guān)是連接發(fā)電機(jī)組和應(yīng)急母排的線路斷路器，所有的單個(gè)發(fā)電機(jī)通過(guò)它完成同步運(yùn)行。
Paralleling Control
A paralleling control contains the electrical equipment provided in a paralleling system for control of a single generator set.
并聯(lián)控制
并聯(lián)控制是并聯(lián)系統(tǒng)中用來(lái)控制單個(gè)發(fā)電機(jī)組的電氣設(shè)備。
Peak Load
Peak load is the highest point in the kilowatt demand curve of a facility. This is used as the basis for the utility company's demand charge.
峰值功率
峰值功率是用電設(shè)備的功率需求曲線中的最大值。
Peer-To-Peer
A network operating system where any device on the main network bus can initiate communication.
點(diǎn)對(duì)點(diǎn)
點(diǎn)對(duì)點(diǎn)是一種網(wǎng)絡(luò)運(yùn)行系統(tǒng)，任何設(shè)施都可以發(fā)起信息交換。
Phase Angle
Phase angle refers to the relation between two sine waves which do not pass through zero at the same time. Considering one full cycle to be 360 degrees, the phase angle expresses how far apart the two waves are in relation to each other in degrees.
相角
相角指的是兩個(gè)不同時(shí)經(jīng)過(guò)零點(diǎn)的正弦波之間的關(guān)系。一個(gè)完整周期為360度，相角就是用度數(shù)來(lái)表示兩個(gè)波的距離。
Phase Rotation
Phase rotation (or phase sequence) describes the order (A-B-C, R-S-T, or U-V-W) of the phase voltages at the output terminals of a three-phase generator. The generator phase rotation must match the facility phase rotation. This must be checked prior to operation of the electrical loads in a facility with an on-site generator.
相序
相序表示的是三相發(fā)電機(jī)輸出終端相電壓的順序。在用電負(fù)載運(yùn)轉(zhuǎn)之前必須檢查確保發(fā)電機(jī)的相序與用電設(shè)施的相序一致。
Port
The external connector on a device at which the network cable or medium is attached.
接口
設(shè)備的外接口，用于連接網(wǎng)絡(luò)線或者其它介質(zhì)。
Power Factor
Power factor is the cosine of the angle between the active power (kW) and apparent power (kVA) in a circuit.
功率因數(shù)
功率因數(shù)是電路中有功功率(kW)和視在功率(kVA)之間夾角的余弦值。
Prime Power
Prime Power describes an application where the generator set(s) must supply power on a continuous basis and for long periods of time between shutdowns. No utility service is present in typical prime power applications.
常載
常載是指發(fā)電機(jī)組可長(zhǎng)時(shí)間和連續(xù)的運(yùn)行。通常在沒(méi)有市電供應(yīng)，發(fā)電機(jī)組作為首要電源的場(chǎng)合使用。
Priority Control
Priority control is the process by which the total loads on the bus is limited to the most critical loads in the system until adequate generation capacity is available to serve all loads.
優(yōu)先級(jí)控制
優(yōu)先級(jí)控制是指當(dāng)總負(fù)載電力需求大于發(fā)電機(jī)組的輸出時(shí)，首先要滿(mǎn)足最關(guān)鍵負(fù)載的電力需求。
Protocol
A set of rules used mutually by two or more devices to communicate. Also, known as the "language" used in a network.
協(xié)議
兩個(gè)或多個(gè)設(shè)施共同遵守的一些通訊規(guī)則，在網(wǎng)絡(luò)中常稱(chēng)為“語(yǔ)言”。
R
Radio Interference
Radio interference refers to the interference with radio reception caused by a generator set.
無(wú)線電干擾
無(wú)線電干擾是指發(fā)電機(jī)組對(duì)無(wú)線電信號(hào)接收造成的干擾。
Reactive Power
Reactive power is power that flows back and forth between the inductive windings of the generator and the inductive windings of motors, transformers, etc., which are part of the electrical load. This power does no useful work in the electrical load nor does it present load to the engine. It does apply load to the generator and limits the capacity of the generator.
無(wú)功功率
無(wú)功功率是指電流在發(fā)電機(jī)、電動(dòng)機(jī)、變壓器等的感應(yīng)線圈之間往復(fù)流動(dòng)，這也構(gòu)成了電力負(fù)載的一部分。它并沒(méi)做有用功，而且也不是發(fā)動(dòng)機(jī)的負(fù)載，但是作為發(fā)電機(jī)負(fù)載，限制了發(fā)電機(jī)的容量。
Reverse Power Relay
A reverse power relay is a relay with a wattmeter movement that senses the direction of power flow. In paralleled sets, a flow of reverse power (i.e., power flow into set) will actuate the reverse power relay and disconnect the set from the system. If one set stops and reverse power protection is not provided, the set still running will drive the set that has stopped. The generator on the set that has stopped will act as a motor.
逆功率繼電器
逆功率繼電器是指帶瓦特計(jì)的繼電器，用來(lái)感知電流的方向。在并聯(lián)機(jī)組中，反方向電流（例如流回發(fā)電機(jī)組的電流）會(huì)啟動(dòng)逆功率繼電器，把該機(jī)組與系統(tǒng)斷開(kāi)。如果一臺(tái)發(fā)電機(jī)組沒(méi)有運(yùn)轉(zhuǎn)，并且沒(méi)有逆功率繼電器保護(hù)，運(yùn)轉(zhuǎn)的機(jī)組就會(huì)驅(qū)動(dòng)這個(gè)機(jī)組，這臺(tái)機(jī)組上的發(fā)電機(jī)則變成電動(dòng)機(jī)運(yùn)行。
Router
A device for passing network messages over another media and sometimes protocol. Our network router is programmed as a "repeater" to create another channel on the main network bus. Each channel can have a 4,600 ft. network bus and is capable of having 44 nodes. The PowerCommand Network can have up to twenty (20) channels.
路由器
路由器是把網(wǎng)絡(luò)信息通過(guò)另外一種介質(zhì)（有時(shí)是協(xié)議）傳送出去的裝置。我們的網(wǎng)絡(luò)路由器被設(shè)定為“轉(zhuǎn)發(fā)器”，在主網(wǎng)絡(luò)上創(chuàng)建另外一個(gè)信道。每個(gè)信道有4,600 ft網(wǎng)絡(luò)母排，可容納44個(gè)接點(diǎn)。 PowerCommand 網(wǎng)絡(luò)最多可有20個(gè)信道。
S
SCR
Silicon Controlled Rectifier -- a three-electrode solid-state device which permits current to flow in one direction only, and does this only when a suitable potential is applied to the third electrode, called the gate.
可控硅整流器
可控硅整流器——三電極固態(tài)元件，只有當(dāng)匹配的電壓作用于第三電極（選通電極）時(shí)，才能夠保證電流朝一個(gè)方向流動(dòng)。
Short Circuit
A short circuit is generally an unintended electrical connection between current carrying parts.
短路
短路通常是指帶電流的組件之間意外的電路連接。
Shunt Trip
Shunt trip is a feature added to a circuit breaker or fusible switch to permit the remote opening of the breaker or switch by an electrical signal.
分勵(lì)脫扣
分勵(lì)脫扣是線路斷路器或可熔電閘的一個(gè)特性，可通過(guò)遠(yuǎn)程信號(hào)來(lái)進(jìn)行分?jǐn)嗷蜣D(zhuǎn)換。
Soft Loading
Soft loading refers to the ramping of load onto or off of a generator in a gradual fashion for the purpose of minimizing voltage and frequency transients on the system.
軟加載
軟加載是指在給發(fā)電機(jī)組增加或減少負(fù)載時(shí)要逐漸進(jìn)行，以減少電壓和頻率對(duì)系統(tǒng)的瞬變影響。
Sound Level Meter
A sound level meter measures sound pressure level. It has several frequency-weighted decibel (dB) scales (A, B, C) to cover different portions of the range of measured loudness. Sound level meters indicate RMS sound, unless the measurements are qualified as instantaneous or peak sound level.
聲級(jí)表
聲級(jí)表是用來(lái)測(cè)量聲壓級(jí)別的，它根據(jù)聲音的頻率分為幾個(gè)分貝級(jí)（A, B, C）。聲級(jí)表表征的是均方根聲音，除非是適合瞬間或峰值的度量。
Sound Pressure Level (SPL)
Sound pressure level is a measurement of the pressure fluctuations of a sound wave as it propagates through the air. Because of the wide range of pressures to which the ear responds, a logarithmic scale is used and is expressed as a ratio of the measured pressure referenced to a pressure of 2x10-5 N/m2 (20 m Pa) which is the threshold of human hearing at 1000 Hz. The measure is expressed in decibels (dB). The Bel unit is named after Alexander Graham Bell.
聲壓級(jí)別
聲壓級(jí)別是表示在空氣中傳播的聲波的起伏壓。由于耳朵能感知的聲壓范圍很大，所以采用其對(duì)數(shù)值，并以2x10-5 N/m2 (20 m Pa)的比率表示，這是人類(lèi)在1000 Hz所能聽(tīng)到的極限，單位是分貝(dB)。貝爾（十分貝）是以亞歷山大·格雷姆·貝爾的名字命名的。
Standby System
A standby system is an independent power system that allows operation of a facility in the event of normal power failure.
備用系統(tǒng)
備用系統(tǒng)是一個(gè)獨(dú)立的電力供應(yīng)系統(tǒng)，當(dāng)常規(guī)電力供應(yīng)失敗時(shí)，備用系統(tǒng)就會(huì)運(yùn)行。
Star Connection
See Wye Connection.
星形連接
參見(jiàn)Y形連接。
Starting Current
The initial value of current drawn by a motor when it is started from standstill.
啟動(dòng)電流
當(dāng)發(fā)動(dòng)機(jī)從停止?fàn)顟B(tài)啟動(dòng)時(shí)帶來(lái)的初始電流值就是啟動(dòng)電流。
Surge
Surge is the sudden rise in voltage in a system, usually caused by load disconnect.
突變
突變是指系統(tǒng)中電壓突然升高，通常是由于負(fù)載斷開(kāi)而引起的。
Surge Suppressor
Surge suppressors are devices capable of conducting high transient voltages. They are used for protecting other devices that could be destroyed by the transient voltages.
突變抑制器
突變抑制器是能夠抑制瞬間高電壓的設(shè)施，用來(lái)保護(hù)其他設(shè)備免受瞬間電壓的破壞。
Sync Check Relay
A sync check relay is an electrical device that monitors the phase relationship between two voltage sources and provides a signal when the voltage sources are within specific preset parameters.
同步檢查繼電器
同步檢查繼電器是監(jiān)測(cè)兩個(gè)電壓源之間的相位關(guān)系的電氣設(shè)備，如果電壓源間的關(guān)系在預(yù)定的參數(shù)范圍內(nèi)，它就會(huì)發(fā)出相應(yīng)信號(hào)。
Synchronizer
A synchronizer is an electronic device that monitors the phase relationship between two voltage sources and provides a connection signal to an engine governor, to force the generator set to synchronize to the system bus.
同步器
同步器是用來(lái)監(jiān)測(cè)兩個(gè)電壓源之間的相位關(guān)系的電子設(shè)備，它向發(fā)動(dòng)機(jī)調(diào)速器發(fā)出信號(hào)，以促使發(fā)電機(jī)組與系統(tǒng)母排能夠同步。
Synchronous Generator
A synchronous generator is an AC generator having a DC exciter. Synchronous generators are used as stand-alone generators for emergency power and can also be paralleled with other synchronous generators and the utility system.
同步發(fā)電機(jī)
同步發(fā)動(dòng)機(jī)是配有直流勵(lì)磁機(jī)的同步交流發(fā)電機(jī)。同步發(fā)動(dòng)機(jī)能作為獨(dú)立的緊急電源，也可以與其他同步發(fā)電機(jī)或市電并聯(lián)。
T
Terminator
A resistive load placed at the end of a cable to prevent data signals from reflecting back into the data path.
終結(jié)器
終結(jié)器就是置于電纜終端的一個(gè)電阻負(fù)荷，用來(lái)防止數(shù)據(jù)信號(hào)又反射回到線路中去。
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.
轉(zhuǎn)換開(kāi)關(guān)
轉(zhuǎn)換開(kāi)關(guān)是能夠把負(fù)載在備用電源和常規(guī)電源之間進(jìn)行轉(zhuǎn)換的電氣設(shè)施。自動(dòng)轉(zhuǎn)換開(kāi)關(guān)能夠進(jìn)行監(jiān)控，如果首選電源供應(yīng)失敗，就自動(dòng)把負(fù)載連接到備用電源。
- 2019-02-21● 柴油發(fā)電機(jī)組氣門(mén)的常見(jiàn)故障
- 2019-02-19● 柴油發(fā)電機(jī)的每周保養(yǎng)
- 2019-02-15● 發(fā)電機(jī)不能瞬間加速的原因
- 2019-02-14● 柴油發(fā)電機(jī)的油耗問(wèn)題
- 2019-02-13● 發(fā)電機(jī)曲軸的工作條件
- 2019-02-12● 柴油發(fā)電機(jī)怠速太高要檢查哪些部位？
- 隨機(jī)推薦
- 2014-08-09● MTAA11-G3重慶康明斯發(fā)電機(jī)組技術(shù)參數(shù)
- 2014-07-18● J258ZA33南通股份發(fā)電機(jī)組技術(shù)參數(shù)
- 2018-08-13● 柴油發(fā)電機(jī)組排氣煙色不正常的現(xiàn)象
- 2014-08-09● QSM11-G2東風(fēng)康明斯發(fā)電機(jī)組參數(shù)
- 2016-02-11● 發(fā)電機(jī)在使用時(shí)增壓器為何發(fā)紅
- 2016-02-04● 珠海發(fā)電機(jī)組：交流電及交流發(fā)電機(jī)的介紹