选型常识
发电机组专业术语中英文对照大全（I、L、M、N）
I Insulation Insulation is non-conductive material used to prevent leakage of electric current from a conductor. There are several classes of insulatio
I
Insulation
Insulation is non-conductive material used to prevent leakage of electric current from a conductor. There are several classes of insulation in use for generator construction, each recognized for a maximum continuous-duty temperature.
绝缘
绝缘体就是非导电材料，用来防止导体中电流的泄露。按最高持续耐热度划分，发电设备中使用的绝缘体有多种等级。
L
Lagging Power Factor
Lagging power factor in AC circuits (a power factor of less than 1.0) is caused by inductive loads, such as motors and transformers, which cause the current to lag behind the voltage. See Power Factor.
滞后功率因数
交流电路中的滞后功率因数（小于1.0）是由感应负荷引起的，例如发动机、变压器，使电流滞后于电压。（参照功率因数）
Leading Power Factor
Leading power factor in AC circuits (0.0 to -1.0) is caused by capacitive loads or overexcited synchronous motors which cause the current to lead the voltage. See Power Factor.
超前功率因数
交流电路中的超前功率因数(0.0 to -1.0)是由电容负荷或者过励的同步电动机引起的，使电流超前于电压。（参照功率因数）
Line-To-Line Voltage
Line-to-line voltage is the voltage between any two phases of an AC generator.
线电压
线电压是指交流发电机任何两相间的电压。
Line-To-Neutral Voltage
In a 3-phase, 4-wire, Y-connected generator, line-to-neutral voltage is the voltage between a phase and the common neutral where the three phases are tied together.
相电压
在三相四线星形连接的发电机中，相电压是指三相连接点与每相之间的电压。
Load Demand负载需求
Load Demand is a paralleling system operating mode in which the system monitors the total kW output of the generator sets, and controls the number of operating sets as a function of the total load on the system. The purpose of load demand controls is to reduce fuel consumption and limit problems caused by light load operation of reciprocating diesel generator sets.
负载需求是并联系统的一种运行模式，系统监控发电机组总的输出功率，根据系统总负载量决定运行机组的数量。负载需求控制的目的是降低燃料的消耗量，减少往复式柴油发电机组因低负荷造成的故障。
Load Factor
The load factor is the ratio of the average load to the generator set power rating.
负荷系数
负荷系数指的是机组的平均负荷与额定功率之间的比率。
Load Shedding
Load shedding is the process by which the total load on a paralleling system is reduced, on overload of the system bus, so that the most critical loads continue to be provided with reliable electrical service.
卸载
在超载的系统母排上，并联系统的总负载被降低的过程称为卸载，以确保最关键负载获得可靠的电力供应。
Local-Area Network (LAN)
A computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings.
局域网
局域网（LAN）是指覆盖相对较小区域的计算机网络，大多数局域网局限在单一的建筑或建筑群内。
Low Voltage
AC system operating voltages from 120 to 600 VAC.
低压
交流电系统中从120到600 VAC的电压称为低压。
M
Main Breaker
A main breaker is a circuit breaker at the input or output of the bus, through which all of the bus power must flow. The generator main breaker is the device, usually mounted on the generator set, that interrupts the genset's power output. Main breakers provide overcurrent protection and a single disconnect point for all power in a switchboard or device.
主开关
主开关是在母排输入或输出端的线路断路器，所有的电流都要从那通过。主开关通常安装在发电机组上，用来切断输出电流。主开关能够提供过电流保护，是配电盘或设备的电源断开点。
Mains
Mains is a term used extensively outside of the United States to describe the normal power service (utility).
市电
市电是美国以外的区域对常规电力服务的广泛称谓。
Master Control
A control section in a typical paralleling system that provides total system metering and the interface point between the paralleling system and the facility.
主控制
主控制是典型的并联系统计量控制设备，也是并联系统与用电设施之间的接口。
Medium Voltage
AC system operating voltages from 601 to 15000 VAC.
中压
交流电系统中从601 到15000 VAC的电压称为中压。
Modbus “专用名词”
An industrial networking system that uses RS-232 serial master-slave communications at data transfer rate of up to 19.2 KBPS.
一种工业网络，它使用RS232主从通讯模式传输数据，最快可达19.2kBPS。
Modbus Plus
An industrial networking system that uses token-passing peer-to-peer communications at data transfer rates of one megabit per second (MBPS). The network media is shielded twisted-pair cable.
一种工业网络，它使用令牌环点对点通讯模式传输数据，可达一百万位每秒。网络介质使用屏蔽双绞线。
Modules
Modules are also called nodes or devices. These are devices such as Genset Communication Modules (GCMs), Control Communication Modules (CCMs), and Digital Input/Output Modules (DIMs).
模块
模块也可以称作接点或组件，例如机组通讯模块(GCMs)、控制通讯模块(CCMs)以及数字输入/输出模块(DIMs)。
Molded Case Circuit Breaker
A molded case circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker. Molded case refers to the use of molded plastic as the medium of electrical insulation for enclosing the mechanisms, and for separating conducting surfaces from one another and from grounded (earthed) metal parts. Molded case circuit breakers usually contain thermal-magnetic trip units, although larger sizes can be equipped with solid state trip sensors.
塑壳断路器
塑壳断路器能够自动切断电流在电流超过跳脱设定后。塑壳指的是用塑料绝缘体来作为装置的外壳，用来隔离导体之间以及接地金属部分。塑壳断路器通常含有热磁跳脱单元，而大型号的塑壳断路器会配备固态跳脱传感器。
N
NEMA
National Electrical Manufacturers Association
国家电力制造协会
国家电力制造协会
NFPA
National Fire Protection Association
国家防火协会
国家防火协会
Network
A collection of Nodes that communicate with one another over a common medium.
网络
在共同的介质上互相通讯的接点的集合就是网络。
Network Data
A signal that carries messages between nodes. PowerCommand Networks use Manchester Encoding that makes the signal insensitive to polarity. The signal is transformer-coupled to the network data wire at a rate of 78 KBPS.
网络数据
接点之间传送信息的信号就叫做网络数据。PowerCommand 网络利用Manchester编码使信号不受极性影响，信号通过变压器传送到网络数据线的速度是78 KBPS。
Network Gateway Module
A device acting as an interface between a modem or PC and the network wire. The Gateway takes the UTP wire and then provides an RS-232 port for connection to either a modem or PC.
网关模块
网络模块是调制解调器或PC与网络线之间的接口。网关与UTP线相连，并为调制解调器或PC提供了RS-232连接端口。
Neutral Current
Neutral current is the current that flows in the neutral leg of a paralleling system. Often, this term is used in reference to circulating currents or cross currents.
零线电流
零线电流指的是通过并联系统零线的电流，在谈及环流电流或者交叉电流时常会提到这个术语。
Node
A module that can communicate over the network data to other modules. A module contains a Neuron Chip. Certain devices are nodes such as Genset Communication Modules (GCMs) and Control Communication Modules (CCMs). Other devices are not nodes, as they cannot communicate with other devices, but only receive messages. An example is the Network Annunciator Module (NAM).
接点
接点是含有神经元芯片的模块，可以通过网络数据与其他模块通讯。有些模块是接点，例如机组通讯模块(GCMs)和控制器通讯模块(CCMs)，而那些只能接受信息，而不能与其它设施实现通讯的模块则不是接点，例如网络示警模块(NAM)。
Nonlinear Load
A nonlinear load is a load for which the relationship between voltage and current is not a linear function. Some common nonlinear loads are fluorescent lighting, SCR motor starters and UPS systems. Nonlinear loads cause abnormal conductor heating and voltage distortion.
非线性负载
电压和电流之间是非线性关系的负载称为非性形负载。一些常见的非线性负载有荧光灯、可控硅电动机启动器以及UPS系统。非线性负载能导致反常的导体发热和电压畸变。