有功功率 有功功率（kW），是指發(fā)電機組實際供應(yīng)給負載的功率，它由發(fā)電機組的發(fā)動機提供，受到發(fā)動機馬力大小的限制。發(fā)熱和驅(qū)動馬達轉(zhuǎn)動靠有功功率完成。 Active Power Active power is the real power (kW) supplied by the generator set to the electrical load. Active power creates a load on the generator set's engine and is limited by the horsepower of the engine. Active power does the work of heating, turning motor shafts, etc.
后備保護裝置 后備保護裝置是在其他保護裝置動作失敗或發(fā)生故障時動作的保護裝置。 Backup Protection Backup protection consists of protective devices, which are intended to operate only after other protective devices have failed to operate or detect a fault.
基本負荷 基本負荷是指建筑負荷需求量中不變的那一部分，是構(gòu)成負荷需求曲線的基數(shù)。 Base Load Base load is that portion of a building load demand which is constant. It is the "base" of the building demand curve.
交流 交流是指電流在正負最大值之間以特定的頻率變動，通常頻率為50或60赫茲。 AC Alternating Current (AC) is electric current that alternates between a positive maximum value and a negative maximum value at a characteristic frequency, usually 50 or 60 cycles per second (Hertz).
波特率 串行數(shù)據(jù)傳輸速率，約等于每秒鐘傳輸?shù)谋忍財?shù)。比特/秒也可以用BPS表示，kBPS表示千比特/秒。 Baud Rate The speed of data transmission in serial data communications approximately equal to the number of code elements (bits) per second (BPS). Bits per second are also termed BPS, with the prefix (k) denoting thousands.
差動繼電器 作為保護裝置，差動繼電器由位于系統(tǒng)中兩個不同位置的電流互感器提供反饋信息。差動繼電器對電流進行比較，如果存在不同則表示受保護區(qū)域內(nèi)有故障存在。這些裝置常被用于保護發(fā)電機或變壓器的線圈。 Differential Relay A differential relay is a protective device that is fed by current transformers located at two different series points in the electrical system. The differential relay compares the currents and picks up when there is a difference in the two, which signifies a fault in the zone of protection. These devices are typically used to protect windings in generators or transformers.
