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。
O
Ohm
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.
欧姆
欧姆是电阻单位。1伏特的电压通过1欧姆的电阻能产生1安培的电流。
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.
单线图
单线图是用一条线来表示三相电力分布系统的示意。，
Overcrank
Overcrank is an alarm function provided with most generator sets that indicate that the generator set has failed to start.
盘车失败
盘车失败是机组的预警功能，表示发电机组启动失败，大多数机组都有这种功能。
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
超调
超调是指电压调节器或控制器响应负载的变化时，导致电压或频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.
并联开关
并联开关是连接发电机组和应急母排的线路断路器，所有的单个发电机通过它完成同步运行。
Paralleling Control
A paralleling control contains the electrical equipment provided in a paralleling system for control of a single generator set.
并联控制
并联控制是并联系统中用来控制单个发电机组的电气设备。
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
峰值功率是用电设备的功率需求曲线中的最大值。
Peer-To-Peer
A network operating system where any device on the main network bus can initiate communication.
点对点
点对点是一种网络运行系统，任何设施都可以发起信息交换。
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
相角指的是两个不同时经过零点的正弦波之间的关系。一个完整周期为360度，相角就是用度数来表示两个波的距离。
Phase Rotation
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本文关键字：专业 发电机组 电工技术，电工技术 - 电工技术
