基于翻译校准标准和电气工程术语
成功不需要在我身上，但是功力不需要唐捐 —— 胡适
A device that functions when the circuit admittance, impedance, or reactance increases or decreases beyond a predetermined value.
A device that serves to control or make and break the equalizer or the current balancing connections for a machine field, or for regulating equipment, in a multi-unit installation.
A device that functions to control the temperature of a machine or other apparatus, or of any medium, when its temperature falls below or rises above a predetermined value.
NOTE—An example is a thermostat that switches on a space heater in a switchgear assembly when the temperature falls to a predetermined value. This should be distinguished from a device that is used to provide automatic temperature regulation between close limits, which would be designated as device function 90T.
A device that operates when the ratio of voltage to frequency is above a preset value or is below a different preset value. The relay may have any combination of instantaneous or time-delayed characteristics.
A synchronizing device that produces an output that causes closure of a circuit breaker between twocircuits whose voltages are within prescribed limits of magnitude, phase angle, and frequency. It may or may not include voltage or speed control. A synchronism-check relay permits the paralleling of two circuits that are within prescribed (usually wider) limits of voltage magnitude, phase angle, and frequency.
A device that functions when the temperature of the protected apparatus (other than the load-carrying windings of machines and transformers as covered by device function number 49), or that of a liquid orother medium, exceeds a predetermined value; or when the temperature of the protected apparatus or that of a liquid or other medium,exceeds a predetermined value or decreases below a predetermined value.
当受保护装置的温度（不包括电机和变压器的负载绕组）或液体或其他介质超过预定值时； 或当受保护装置或液体或其它介质的温度超过预定值或下降到预定值以下时。
A device that operates when its input voltage is less than a predetermined value.
A device that monitors the presence of the pilot or main flame in such apparatus as a gas turbine or a steam boiler.
A device that is used expressly for disconnecting one circuit from another for the purposes of emergency operation, maintenance, or testing.
A nonautomatically reset device that gives a number of separate visual indications upon the functioning of protective devices and that may also be arranged to perform a lockout function.