How to skillfully use aluminum alloy cable in photovoltaic system?

The cost of control system is very important in the era of photovoltaic affordable Internet access. Over the past decade, the price of modules and inverters has decreased by 90%, which has made a great contribution to the overall cost reduction of photovoltaic system, but the cost of cables has not decreased. In large projects, … Read more

What are the advantages of overhead cables over underground cables?

(1) The power transmission is not easily affected by the surrounding environment and has high reliability. (2) The insulation distance between wires is small, the land occupation is small, and there is no interference with radio waves. (3) When laying underground, it does not occupy the ground and space, which is not only safe and … Read more

What are the maintenance items of bridge cable and special cable bridge?

Project Name: design and processing of high voltage ACSR Cable bridge Innovative ideas: there are three 10kv High-voltage incoming lines for 112201 fully mechanized coal mining face, which are laid from 11 panel substation to equipment train of working face. The high-voltage cable enters the rubber conveying chute section and is suspended along the coal … Read more

Differences in use of brass, phosphor copper and red copper

Pure copper is a purplish red metal, commonly known as “red copper”, “red copper” or “red copper”. Pure copper is ductile. Pure copper, the size of a drop of ACSR Cable, can be drawn into two kilometers of filaments or rolled into almost transparent foil larger than a bed. The most valuable property of pure … Read more

Testing of sheath and corrosion protection

The intact cable sheath can effectively protect the insulation: it can prevent liquid water from immersing in the insulation, and the enclosed metal sheath can also prevent moisture from diffusing into the insulation, so it can obviously prevent the formation of water branches in PE / XLPE insulated cables. The sheath and anti-corrosion layer test … Read more

Why are mineral insulated cables so hot?

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

Instruments and accessories for cable path detection

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 causes and solutions of overheating of wires and cables

When the power cable passes through a certain load current, it will be heated. With the increase of load current, the higher the cable surface temperature is. If it is not managed in time, the consequences can be imagined. For example, PVC cable is considered with core temperature of 70 ℃ as the upper limit, … Read more