Low Voltage Cables Are Suitable For Buried Underground
Low-voltage cable distribution box according to its electrical composition is divided into two categories:
1 is a box of one or more switch protection equipment, its structure is more complex;
2 the other is not any switching equipment, the box only the cable end of the connection to connect the attachment, simple structure, a single function;
In short, Low Voltage XLPE Insulated Electric Cable all cables are used to distribute power to multiple other users or devices.
Low voltage cable common basic model:
VV ---- PVC insulated PVC sheathed (copper core) power cable;
YJV --- XLPE insulated PVC sheathed (copper core) power cable.
If it is (aluminum core) conductor, then the middle plus L, that is, respectively, VLV, YJLV;
Flame retardant cable, then in front of ZR, that is, ZR-VV, ZR-YJV;
Fire-resistant cable, in front of N (or NH), that is, NH-VV, NH-YJV;
Halogen-free low smoke, model WD-YJY, cross-linked polyethylene insulated polyolefin jacket;
The above functions together, there are:
WDZAN-YJY- (halogen-free low smoke) XLPE insulated polyolefin sheathed, Low Voltage XLPE Insulated Electric Cable Class A flame retardant fire power cable.
Low Voltage XLPE Insulated Electric Cable and also:
Pre - branch cable, plus F (or YF);
Irradiation cross - linked cable, plus FZ;
Rubber cable, YQYZYC (YQWYZWYCW), respectively, corresponding to light, medium and heavy.
There are many types, such as fire cables (mineral insulated cables), etc., Low Voltage XLPE Insulated Electric Cable the general occasions less than.
Wire diameter of 1.5,2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300 and so on;
Cable with a single core and multi-core combination of a variety of commonly used is 3,4,5 core, of which 4,5 core equal diameter and not equal diameter, that is often said that the 4 core, 5 core corresponds to 3 +1 and 4 + 1 or 3 + 2, unequal diameter cable N line, PE line according to national standards, such as 4 * 185 + 1 * 95 or 3 * 185 +2 * 95.
First, PVC insulated PVC sheathed power cable
1, Uses: Suitable for fixed laying in the exchange 50HZ, rated voltage 0.6 / 1 kV and below the transmission line.
2, Features: In addition to the cable has a reliable electrical performance, Low Voltage XLPE Insulated Electric Cable but also has a strong anti-chemical corrosion, acid, alkali and organic solvents, cables from the laying of the limit, can be any drop or even vertical laying.
3, the working temperature: 0 ℃ ~ +70 ℃.
4, product model, name and related instructions
(1) VV VLV copper (aluminum) core PVC insulated PVC sheathed power cable
Applicable to laying in the room, cable channel, pipe, can not be subject to mechanical external force
(2) VV22 VLV22 copper (aluminum) core PVC insulated steel tape armored PVC sheathed power cable
Applicable to buried underground, Low Voltage XLPE Insulated Electric Cable the cable can withstand mechanical external force, but can not be a large pull
(3) ZR-VV ZR-VLV copper (aluminum) core PVC insulated flame-retardant PVC sheathed power (hu4 tao4 dian4 li4) cable
Used to require resistance to the transmission field on the circuit
(4) ZR-VV22 ZR-VLVV copper (aluminum) core PVC insulated steel tape armored flame retardant PVC sheathed power cable
Used for the requirements of the flame retardant field on the transmission and distribution circuit