基于翻译校准标准和电气工程术语
东方欲晓，莫道君行早 —— 李德胜
A device that connects a circuit, such as the shunt field of a synchronous converter, to a source of separate excitation during the starting sequence.
在启动过程中，在电路街道上激磁场的电源上，如同步换流器的分激磁场。
A device that operates on a predetermined value of power flow in a given direction, such as reverse power flow resulting from the motoring of a generator upon loss of its prime mover.
它是一种在功率整流器的正负电路中由反向电弧引起的反向功率下移动的装置。
A device that makes or breaks contact when the main device or piece of apparatus that has no device function number reaches a given position.
当该代号的主要部件或设备部件的工作位置达到指定位置时，接通或断开接触。
A device such as a motor-operated multi-contact switch (or the equivalent), or a programmable device, that establishes or determines the operating sequence of the major devices in equipment during starting and stopping, or during sequential switching operations.
一种设备，如电机多接点开关或可编程装置，在启动或停止或其他程序切换过程中建立或确定设备中主要设备的操作顺序。
A device for raising, lowering, or shifting the brushes of a machine; short-circuiting its slip rings; or engaging or disengaging the contacts of a mechanical rectifier.
用于提升、降低或移动电机的电枢，或短接滑环，或连接或切断机械整流器的接头。
A device that operates, or permits the operation of, another device on a predetermined polarity only, or that verifies the presence of a polarizing voltage in equipment.
一种装置只在规定的极性下移动，或允许另一个设备移动，或验证设备中是否有极化电压。
A device that functions when the current or power flow decreases below a predetermined value.
当电流或功率降低到定值时
A device that activates upon excessive bearing temperature or on other abnormal mechanical conditions associated with bearings, such as undue wear, which may eventually result in excessive bearing temperature or failure.
一种在轴承温度过高或与轴承相关的其他异常机械条件下移动的设备。（如过度磨损，最终可能导致轴承温度过高或故障。
A device that activates upon the occurrence of an abnormal mechanical condition (except conditions associated with bearings as covered under device function 38), such as excessive vibration,eccentricity, expansion, shock, tilting, or seal failure.
一种发生异常机械状况时动作的设备(不包括与轴承有关的38号装置)，如过度振动、偏心、膨胀、冲击、倾斜或密封失效。
A device that activates upon a given or abnormally high or low value or failure of machine field current, or on an excessive value of the reactive component of armature current in an ac machine indicating abnormally high or low field excitation
.
在电机的磁场电流达到一定值，或降到不正常的低值，或没有磁场的电流时动作，或在一个指示不正常的低磁场激励的交流电机中，电枢无功电流异常高时动作。
A device that functions to apply or remove the field excitation of a machine.
是一种用来为电机加励磁或去励磁的装置。
A device whose function is to connect a machine to its source of running or operating voltage. This function may also be used for a device, such as a contactor, that is used in series with a circuit breaker or other fault-protecting means, primarily for frequent opening and closing of the circuit.
一种装置，其作用是将电机接到它的运行或工作电压源上。这一功能也可像接触器一类的装置，用于与断路器或其他故障保护装置串联使用，主要用于电路的频繁开合的断路器。
A manually operated device that transfers control or potential circuits in order to modify the plan of operation of the associated equipment or of some of the associated devices.
用来转换控制电路，以便修改开关设备或某些装置的运行逻辑。
A device that functions to start the next available unit in multiple-unit equipment upon the failure or nonavailability of the normally preceding unit.
用于多单元（机组）设备中，由于前一单元（机组）发生故障或不能正常运行时，起动下一单元（机组）的装置。
A device that functions upon the occurrence of an abnormal atmospheric condition, such as damaging fumes, explosive mixtures, smoke, or fire.
一种能在异常的大气条件下(如有害的烟雾、爆炸性混合物、烟雾或火灾)起作用的装置。
A device in a polyphase circuit that operates when the polyphase currents are of reverse-phase sequence, or when the polyphase currents are unbalanced, or when the negative phase-sequence current exceeds a preset value.
是一种当多相电流为负相序，或当多相电流不平衡，或包含的负序分量超过定值时动作的继电器。
A device in a polyphase circuit that functions upon a predetermined value of polyphase voltage in the desired phase sequence when the polyphase voltages are unbalanced, or when the negative phase-sequence voltage exceeds a preset value.
一种多相电路中的装置，当多相电压不平衡或负相序电压超过预定值时，它在所要求发相序下对锁定的多相电压起作用。
A device that returns the equipment to the normal or off position and locks it out if the normal starting,operating, or stopping sequence is not properly completed within a predetermined time.
是一种在预定的时间内，不能正确的完成正常的起动、运转、或停机程序时，通常使设备回到正常或断开位置，并将其闭锁的继电器。
A device that functions when the temperature of a machine armature winding or other load-carrying winding or element of a machine or power transformer exceeds a predetermined value.
当电机电枢绕组或其他负载绕组或电机元件或电力变压器的温度超过预定值时起作用的一种装置。
A device that operates with no intentional time delay when the current exceeds a preset value. The suffix TD should be used (e.g., 50TD) to describe a definite time overcurrent function. Use 50BF for a currentmonitored breaker failure function.
一种当电流超过预设值时不经过延时而瞬时动作的装置。后缀TD应该用来描述一个明确的时间过流函数(例如，50TD)。 使用50BF作为电流监测断路器故障功能。