R
Radio Interference
Radio interference refers to the interference with radio reception caused by a generator set.
无线电干扰
无线电干扰是指发电机组对无线电信号接收造成的干扰。
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.
无功功率
无功功率是指电流在发电机、电动机、变压器等的感应线圈之间往复流动,这也构成了电力负载的一部分。它并没做有用功,而且也不是发动机的负载,但是作为发电机负载,限制了发电机的容量。
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.
逆功率继电器
逆功率继电器是指带瓦特计的继电器,用来感知电流的方向。在并联机组中,反方向电流(例如流回发电机组的电流)会启动逆功率继电器,把该机组与系统断开。如果一台发电机组没有运转,并且没有逆功率继电器保护,运转的机组就会驱动这个机组,这台机组上的发电机则变成电动机运行。
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
路由器是把网络信息通过另外一种介质(有时是协议)传送出去的装置。我们的网络路由器被设定为“转发器”,在主网络上创建另外一个信道。每个信道有4,600 ft网络母排,可容纳44个接点。 PowerCommand 网络最多可有20个信道。
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——三电极固态元件,只有当匹配的电压作用于第三电极(选通电极)时,才能够保证电流朝一个方向流动。
Short Circuit
A short circuit is generally an unintended electrical connection between current carrying parts.
短路
短路通常是指带电流的组件之间意外的电路连接。
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.
分励脱扣
分励脱扣是线路断路器或可熔电闸的一个特性,可通过远程信号来进行分断或转换。
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.
软加载
软加载是指在给发电机组增加或减少负载时要逐渐进行,以减少电压和频率对系统的瞬变影响。
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.
声级表
声级表是用来测量声压级别的,它根据声音的频率分为几个分贝级(A, B, C)。声级表表征的是均方根声音,除非是适合瞬间或峰值的度量。
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.
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