□RN1型戶內(nèi)高壓限流熔斷器，用于電力線路的過載及短路保護(hù)。所謂限流就是熔斷器在短路電流達(dá)到峰值之前就將其切斷的功能。 □The product is in overload or short-circuit protection for elctric transformer. The current limiting means that the fuse will cut off the circuit before the shortcircuit current reaches the peak value. 
◆熔斷特性
當(dāng)通過熔斷器的電流為其額定電流的1.3倍時(shí)，1小時(shí)不熔斷；當(dāng)通過熔斷器的電流為其額定電流的2倍時(shí)，1小時(shí)內(nèi)熔斷；熔斷器的熔斷特性曲線如圖1，供選擇熔斷器時(shí)參考。 Current which passes the fuse when being 1.3 times of its specified electric current, Do not fusing for an hour; When the current through the fuse is 2 times of its specined electric current, fusing in an hour; Refer to its fusing feature curve in chart 1 when select the fuse.
◆技術(shù)數(shù)據(jù) Technique data
◆熔斷管結(jié)構(gòu) Structure of fuse link
熔斷管是熔斷器的主要部件，它是由熔絲裝在瓷管中，并在瓷管中充填石英砂，兩端密封而成。額定電流在7.5A以下及額定電壓 為35V的熔管，其熔絲是繞在特制的瓷芯上，如圖2.a；額定電流在7.5A以上的熔體管，其熔絲是懸掛在瓷管中如圖2.b。 The fuse pipe is the main part of fuse,it is made by installing the fuse wire in the porcelain pipe,filling the quartz sand in the porcelain pipe and sealing to-ends of pipe.For the fuse pipe with rated current below 7.5Aand 35V rated voltage,its fuse wire is rolled on the special por- celain core,referening to chart 2.a.for the fuse pipe with rated current above 7.5A,its fuse wire is hang in the porcelain pipe,referening to the chart.