The continuous working temperature of mineral cables is 250 ℃, and they can sustain power supply for 3 hours at 950 ℃ -1000 ℃. They can work close to the melting point of copper at 1083 ℃ for short or extraordinary periods. Due to the excellent performance of Mineral-insulated copper-clad cable, it is suitable for lines with rated voltage below 1000V.
Test method for fault points of power cables
Analysis of Several Causes of Aging of Electric Wires and Cables
List of main types of wires and cables RV, RVV, RVVP, RVVY, RVVYP, KVVRP, (N)2YSLC, ZR-RE, ZR-REE, ZR-REEP, PUR, LIYY, LIYCY, LIYY(TP), LIYCY(TP), LI2YCY, PIMF, LIHH , LIHCH. The characteristics of commonly used cables are as follows CEF——Ethylene-propylene rubber insulated neoprene sheath, flame-retardant power cable for ships CVV——PVC insulated, PVC sheathed flame-retardant power cable for ships Oxygen cabin wires often use BV, BX, RV, RVV series wires, of which: BV-copper core PVC insulated wire, long-term allowable temperature 65℃, minimum temperature -15℃, working voltage AC 500V, DC 1000V, fixedly laid indoors and outdoors, and can be laid in the open or in the dark. BX——Copper core rubber insulated wire, the highest operating temperature is 65℃, for indoor use. RV——PVC insulated single-core flexible cord, maximum operating temperature 65℃, minimum operating temperature -15℃, working voltage AC 250V, DC 500V, used as internal wiring of instruments and equipment. RVV——Copper core PVC insulated and sheathed flexible wire, allowing long-term working temperature of 105℃, working voltage of AC 500V, DC 1000V, used in damp, high mechanical protection requirements, frequent movement and bending occasions. Common cable models VV means: PVC insulation (the first V), PVC sheath (the second V) YJV22 means: cross-linked polyvinyl chloride insulation (YJ), polyvinyl chloride sheath (V), steel tape Kaizhuang (22) type plus "ZR" or "FR" are flame-retardant cables (wires). Add "L" for aluminum wire Wire and cable model naming rules The model of wire is relatively simple: BVV--PVC insulated and sheathed copper core wire, BV--PVC insulated copper core wire, BVR--PVC insulated copper core cord, BX--rubber insulated copper core wire, RHF--chloroprene rubber sheathed copper core cord.
Safety measures for fire resistant cable wiring
Method for distinguishing genuine and fake mineral insulated fireproof cables
Commonly used cable models and their meanings, as well as a comprehensive collection of cable specifications (collectible)
Mineral insulated cable is also called Mi cable. In the standard GB 50016-2014 jointly issued by China's housing, urban and rural areas and China's General Administration of quality supervision, inspection and Quarantine on May 1, 2015, page 377 clearly stipulates that mineral insulated non combustible cable is composed of copper core, mineral insulating material, copper and other metal sheath.