Ng-a (btly) series isolated fire-resistant ACSR Cables are flame-retardant and fire-resistant cables. The insulating layer is phlogopite tape (fire resistance temperature 750 ℃ ~ 800 ℃), the sheath is aluminum tube (fire resistance temperature 660 ℃), and the outer sheath is plastic. It is not in the same category as yttw and bttz mineral insulated … Read more
2.1 catalytic aging of copper is an important reason for rubber hair adhesion The experiment of the former Soviet Union Institute of AAAC Cable science proved that copper infiltrated into the insulating rubber from the contact with rubber during vulcanization, and the thickness of 1.0-2.0mm contained 0.009-0.0027% copper. As we all know, trace copper has … Read more
1、 Wire and AAC Cable material consumption The conventional calculation method of copper weight without conversion: sectional area * 8.89 = kg / km For example: 120 * 8.89 = 1066.8kg/km 1. Quantity of Conductor: （Kg/Km）=d^2 * 0.7854 * G * N * K1 * K2 * C / D = diameter of copper wire, … Read more
1. Manhole and drainage pipe (1) water samples were taken for chemical analysis. (2) remove the water in the well and remove the sludge. (3) paint the iron parts such as cable bracket and hook. (4) check the well cover and ventilation, and check the well body for settlement and cracks. (5) dredge the spare … Read more
To analyze the cause of the fault, first of all, we need to investigate the field situation of the fault and check the real fault, and collect the following installation and operation data. (1) inspection and analysis of AAAC Cable or connector and terminal fault 1. Connector or terminal failure (1) whether the joint sleeve … Read more
In recent years, the city has developed rapidly Subway, station, hospital, school, high-rise housing Expansion of public facilities construction The number of high-rise buildings has soared The demand for urban electricity is rising Such a densely populated focus area Serious consequences of fire In recent years, the fire spread trend of such sites presents similar … Read more
When multiple cables are running in parallel, load measurement shall be conducted regularly to understand the load distribution and correctly grasp the operation status of ACSR Cables. The load distribution of multiple cables is uneven when running in parallel, and even one phase load of one cable will be close to zero. The main reason … Read more
Figure 6 t5000-3 transmitter and receiver Instrument: t5000-3 color screen intelligent pipeline instrument Signal output part: transmitter, direct connection, coupling clamp, LCC module Direct connection: direct connection signal output line, used when finding the route of power cut cable Coupling clamp: clamp method signal output line, used when finding live cable path LCC module: it … Read more
The structure of mineral insulated ABC Cables with different names is convenient for us to design and select better, and there is no confusion about many naming rules. What are (rigidity) and (flexibility)? For a long time, the domestic mineral insulated cables are divided into two types: rigidity and flexibility. The internationally used magnesium oxide … Read more
The main function of wire and cable is to transmit electric energy, signal and realize electromagnetic conversion. The transmission of electric power, such as power cable, overhead line, etc., is the same as shaft ABC Cable, and the wire with electromagnetic conversion is like paint wrapped wire. If you choose a wire or cable, you … Read more