● Product Standard
The product, which is manufactured according to national standard GB/T12706.1-2002 or International Electrotechnical Commission Standard LEC 502-199, is applicable to transmission and distribution lines with an AC rated voltage (u/) of 0.6/1kv and below.
Flame-retardant cables, which are manufactured according to company standard, are in accordance with the requirement of national standard GB12666.5 in terms of flame-retardant performance.
Flame-resistant cables, which are manufacture according to company standard, are in accordance with the requirement of national standard GB12666.6 in terms of flame-resistant performance, and are divided into A and B flame-resistant types (950-1,000℃/90min, 750-800℃/90min) according to national standard GB12666.6.
Low-smoke low-halogen flame-retardant cables are manufactured according to company standard, with the flame-retardant performance in accordance with the requirement of national standard GB 12666.5, and smoke concentration in accordance with the requirement of GB12666.7, PH value and electric conductivity in accordance with the specification of International Electrotechnical Commission Standard IEC60754-2.
● Product Model, Name, Application Range
|
Model |
Name |
Application Range |
|
YJV |
Copper-cored Cross-linked Polyethylene Insulated and PVC Sheathed Power Cable |
laid indoors, in tunnels and pipelines, the cable can endure certain traction, but cannot endure external mechanical force, and single core cable is not allowed to be laid in magnetic material pipelines |
|
YJV22 |
copper-cored cross-linked polyethylene insulation steel tape armored and PVC sheathed power cable |
laid indoors, in tunnels and pipelines and underground, the cable can endure external mechanical force, but cannot endure large tensile force. Single-cored cable is not allowed to be laid in magnetic material pipelines |
Note:
1) ZR- is added before the number of common flame-retardant cables; the flame-retardant cables are characterized by difficult combustion or secondary combustion in a certain range when combusting, and application to occasions with higher intensity of cables, such as power plant, metro, tunnel, high-rise building, large industrial and mining enterprises, oil fields and coal mines.
2) NH- is added before the number of common flame-resistant cables; the flame-resistant cables are characterized by power transmission under normal working condition, normal operation in certain time when combusting, and application to occasions related to fire-proof safety and fire-fighting and lifesaving, such as nuclear power plant, metro and high-rise buildings.
3) DDZ- is added before the number of common low-smoke low-halogen flame-retardant cables; the low-smoke low-halogen flame-retardant cables are characterized by flame-retardant performance, lower smokiness, low hydrogen chloride release amount, and application to occasions with certain requirement on smoke concentration of cable ignition and release amount of hydrogen chloride gas.
4) WDZ- is added before the number of common low-smoke halogen-free flame-retardant cables; the low-smoke halogen-free flame-retardant cables are characterized by flame-retardant performance, low smokiness and harmlessness (small toxicity and corrosion), and application to occasions with special requirement on cable flame retardancy, smoke concentration and toxicity indexes, such as metro tunnels and nuclear power plant.
● Product Specification
|
Cable Model |
Core Number |
Nominal Cross Sectional Area
（m㎡） |
Cable Model |
Core Number |
Nominal Cross Sectional Area
（m㎡） |
|
YJVYJV22 |
1 |
1.5～63010～630 |
YJVYJV22 |
2 |
1.5～1854～185 |
|
YJVYJV22 |
3 |
1.5～3004～300 |
YJVYJV22 |
3+1 |
4～3004～300 |
|
YJVYJV22 |
3+2 |
4～3004～300 |
YJVYJV22 |
4+1 |
4～3004～300 |
|
YJVYJV22 |
4 |
4～3004～300 |
YJVYJV22 |
5 |
4～3004～300 |
● Product Service Characteristics
1. Highest rated temperature
when the cables are used for a long term, the highest working temperature of the cables is 90℃; when in short circuit (the longest sustaining time does not exceed 5 seconds), the highest temperature of cable conductor does not exceed 250℃.
2. Installation Requirement
During laying, the cables are not restricted by head drop, the environmental temperature is not lower than 0℃, and the allowed minimum bend radius is: single-cored cable 15 (D+d), and multi-cored cable 50 (D+d) (D is outer diameter of cables, d is diameter of main conductor).
● Major Technical Performance
|
Cable Rated Voltage（KV） |
0.63/KV |
|
Conductor DC Resistance |
According to requirement of GB/T3956-1997 or IEC338-78 |
|
200℃ Insulation Hot-drawing Test |
?Maximum Extensibility under Load% |
175 |
|
Maximum Extensibility after unloading and cooling% |
15 |
|
5-minute Power Frequency Withstand Voltage Test(kv) |
3.5kv Breakdown Resistance |
|
4-hour AC Voltage Test(kv) |
2.4kv Breakdown Resistance |
● Product Parameter
YJV ??ZR-YJV ??NH-YJV
|
Core Number*Nominal Cross Sectional Area
(mm2) |
Approximate Outer Diameter(mm) |
Allowed Current-carrying Capacity of Copper-cored Cable under 25℃(A) |
Approximate Weight of Finished Product(kg/km) |
|
Air Laying |
Underground Laying |
|
1.5 |
5.79 |
32 |
43 |
45 |
|
2.5 |
6.19 |
42 |
57 |
57 |
|
4 |
6.66 |
56 |
74 |
75 |
|
6.0 |
7.17 |
70 |
93 |
97 |
|
10 |
8.21 |
97 |
127 |
142 |
|
16 |
9.21 |
125 |
167 |
205 |
|
25 |
10.83 |
165 |
216 |
304 |
|
35 |
11.83 |
200 |
261 |
403 |
|
50 |
13.34 |
245 |
311 |
555 |
|
70 |
15.25 |
305 |
388 |
756 |
|
95 |
17.06 |
375 |
461 |
1005 |
|
120 |
18.67 |
435 |
527 |
1250 |
|
150 |
20.90 |
500 |
592 |
1561 |
|
185 |
22.92 |
580 |
671 |
1910 |
|
240 |
25.54 |
685 |
781 |
2453 |
|
300 |
28.16 |
795 |
886 |
3044 |
|
400 |
31.99 |
930 |
1019 |
4024 |
|
500 |
35.42 |
1080 |
1170 |
5006 | |
