熔断电阻说明 英语翻译 时间紧迫,急需高手帮助翻译!谢谢

来源:百度知道 编辑:UC知道 时间:2024/06/11 08:26:33
熔断特性
a. 定义:对电阻器施加规定的过负荷时,阻值显著增大,使流过电阻器的电流下降到最初试验电流的1/50以下时,称为熔断。电阻器从加上规定的过负荷时,到发生熔断时所需的时间,称为熔断时间,这种性能,称为熔断特性。
b. 要求:在规定的额定功耗倍率过负荷条件下,熔断时间应不超过下表规定值。
c.试验方法:使用直流稳压电源。按规定的过负荷和标称阻值计算出施加在被试电阻器上的试验电压和电流值;试验时,先在试验电路中接入被试电阻值相同的大功率电阻器,根据试验电流,调节电压,使试验电流达规定值,断开电源,换上被试电阻器,接通电源,若电流不在规定值时,应在2秒钟内调至规定值,此后不再调整电流,观察电流表,计算熔断时间。

Fuse characteristic
a. Definition: Exerts the stipulation when to the resistor the load, at the first resistance number obviously increases, causes to wind through resistor's electric current to drop to when experiments the electric current below 1/50, is called the fuse. The resistor from when adds on the stipulation the load, the time which to has when fuse needs, is called the melting time, this performance, is called the fuse characteristic.
b. Request: Under the stipulation fixed power loss percentage load condition, the melting time should not surpass the next table rating.
c. testing method: Use cocurrent voltage-stabilized source. The load and the rated resistance calculate according to the stipulation exert, in is tried on resistor's testing voltage and the magnitude of current; When experiment, turns on first in the breadboard circuit is tried the resistance value same high efficiency resistor, according to the experimental electric current, the a