AVVG cable - a detail that is the distribution of electric current in the fixed installations in the rated voltage.Often electricity concentration therein ranges from 650 to 1000 V. The frequency of the current supply can be 50 Hz or more.Where this wire is used and what is the cable AVVG specifications?
Appointment
This device is used in power supply systems and serves as a kind of conductor between the current source and the consumer.He laid underground, sometimes in the open air or in cable ducts.And if we consider the scope of AVVG cable more, then it is used almost everywhere, but only in places where the potential for damage and large tensile stress is reduced to zero.
about design
AVVG cable can be both single and multicore.Moreover, these wires are made from solid aluminum wire.Depending on the material used and the detail with section from 2.5 to 240 millimeters (first class) or from 70 to 240 millimeters (second class).They are solid and stranded product.
The design AVVG cable insulation and the elements are present.This is mainly of PVC plastic, which insulates the wire surface from the effects of external factors.Cores can be digital (0, 1, 2, 3, etc.) and color (white, green, raspberry) marking.The first type of cable is used mainly in large wire with a cross-section of 70 mm2.
Talking about the elements of isolation, it should be noted that the filling of PVC material is applied to the coated wire at the same time separates it from external environmental influences.For items with a cross section of 16 square millimeters and more used insulation fleece.As the protective cover is used a double layer of PET films and tapes of PVC film.In addition, the production may be operated with the bitumen, galvanized tape surface and the PET film.The shell is made from PVC plastic.
AVVG aluminum cable and specifications
This type of wire is intended for use in a stationary state in environments with air temperature from -49 to +49 degrees Celsius.The maximum ambient humidity may reach 98 percent.
maximum temperature at which AVVG cable keeps the properties of the conductor is 70 degree Celsius.Maximum temperature of conductor wires in overload is 80 degrees (provided that the duration of heating is not more than 8-9 hours per day, or one thousand hours of operation for the entire service life).If a short circuit at a temperature of up to 160 oC lived AVVG cable can maintain their properties and do not deform for 4 seconds.
Thus, the cable type AVVG is one of the best devices, conducting an electric current, so it is used in all fire and hazardous areas, tunnels, mines, cable racks and just outdoors.
