In this article, we have examined the characteristic signs of cables. In the German standard, which is common in Iran, the structure of cables is marked with the letters of the alphabet. In this method, the first letter indicates the conductor, N is the symbol of copper and NA is the symbol of aluminum.. The second letter indicates the insulation of the wires. Y is the sign of copper and NA is the sign of aluminum. .
The second letter identifies the insulation of the wires. Y is a plastic symbol and G is a rubber symbol, and if there is no letter, paper insulation is desired.. The next part determines the type of pod. Y is a plastic sheath, K is a lead sheath and KL is an aluminum sheath. The next part specifies the type of particle, b specifies the steel wire and b specifies the galvanized steel wire.
Finally, the last part specifies the material of the outer covering, and in that A determines the vegetable fibers (jute) Below are some low voltage cables that are used in power supply .
Characteristics of cables for all types of wires and cables
NYY copper conductor cable, insulation and plastic sheath
NAYY cable with aluminum conductor, insulation and plastic sheath
NGG cable with copper conductor, insulation and plastic sheath
NAGG cable with aluminum conductor, insulation and plastic sheath
NYKB cable with copper conductor, plastic insulation, lead sheath and steel armor .
NYYGB cable with copper conductor, insulation and plastic sheath and galvanized steel armor .
NKBA cable with copper conductor, paper insulation, lead sheath, steel armor and vegetable fiber outer covering .
Different uses of electric cables
Energy transfer to homes: NYC cable can be used for terrestrial network, and aerial cable with YTY steel seal is usually used for aerial network..
Street lighting: In the terrestrial network, nyy and nycy cables are used, in the aerial network, ymt self-supporting cable is used, which has a metal sheath and supports the weight of the cable..
Local network: From NYY.NYCY cables,NYCWY and also from NKL cables(Y)Y
Chemical factories: From NYY cable,NYC,NYCWY is used.
Gas stations, oil fields and refineries: PVC cable with NYKY lead sheath is used.
Networks power plants: From NYY PVC cables,NYC,NYCWY is used.
Rivers, large water streams, pools: NYKY PVC cable is used.
