Power Cable
1.  Application
It's used to transmit and distribute power on the power line of A. C rated voltage 0.6/1kv. Fire-resistance power cable is used in the environment with high demand of fire-resisting performance such as high-rise building, the super market.

2. Using Features
(1). Temperature of long-term operating isn't higher than 70 Co
In short-circuit (the longest continuous time isn't more than 5 seconds), the highest temperature of conductor isn't higher than 160Co
(2). Ambient temperature shouldn't lower than 0Co when laid, otherwise, they should be heated ahead.
The minimum bending radius of multi core cable with armor shouldn't smaller than 15 times of cable's outer diameter. The minimum bending radius of multi core cable without armor shouldn't be smaller than 15 times of cable outer diameter.
(3). D. C conductor resistance should comply with GB/T3956-1997.
(4). Frequency withstand voltage test: 2.5U+2KV/5min without puncture
(5). Flame-retardant Character
A. Flame-retardant cable can withstand bundles burning test prescribed by GB/T18380.3-2001
B. Low-halogen low smoking flame-retardant cable can withstand bundles burning test prescribed in GB/T18380.3-2001, degree of smoke when burning comply with prescribed in GB/T17651.1-1998, HCl content of gas separated from burning shouldn't more than 100mg/g.
C. Halogen-free low smoking flame-retardant cable can withstand bundles burning test prescribed by GB/T18380.3-2001, degree of smoke when burning comply with prescribed of GB/T17651.1-1998, pH value of solution water of gas separated from burning shouldn't lower than 4.3, and electric conductivity rate shouldn't more than 10 s/m.
D. Fire-resistance cable could endure fire-resistance rating test in GB12666.6-90.

3. Structure Type
(1). Copper/aluminum conductor+PVC insulation, +PVC sheath
(2). Copper/aluminum conductor+XLPE insulation+PVC sheath
(3). Copper/aluminum conductor+XLPE insulation+XLPE sheath
(4). Armor or without armor power cable
(5). Fire-resistance power cable

4. Core No: 1, 2, , 3, 4, 5, 3+1, 3+2, 4+1

5. Range of conductor cross-sectional area(sq mm): 1.5-630

6. Rated voltage: 0.6/1KV, 8.7/10KV
7. Installation in air
(1). When the single core cable laying in parallel, the distance between cables' center is 2 times of cable diameter of whose conductor cross sectional area≤ 185mm2, and 90mm for whose conductor cross sectional area ≥ 240mm2.
(2). The ambient temperature: 40 Co
(3). Conductor highest temperature: 70 Co
(4). Correction factors of current rating for different ambient temperature
Air temperature  20 Co  25 Co  35 Co  40 Co  45 Co
Correction factors  1.12  1.06  0.94  0.87  0.79

8. Installation directly buried into ground
(1). When the single core cable laying without touching, the distance between cables' center is 2 times of cable diameter.
(2). The ambient temperature: 25 Co
(3). Conductor highest temperature: 70 Co
(4). Soil thermal-resistance receptivity: 10 Co m/W
(5). Buried Depth: 0.7m
(6). Correction factors of current rating for different ambient temperature
Air temperature  20 Co  25 Co  35 Co  40 Co  45 Co
Correction factors  1.12  1.06  0.94  0.87  0.79

9. Short-circuit current
Max. Temperature at short circuit  Max. Short-circuit current
130 Co