Power cables are mainly used for power transmission and distribution purpose. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. The assembly is used for transmission and distribution of electrical power. Electrical power cables may be installed as permanent wiring within buildings, buried in the ground and run overhead or exposed.……Including: rubber cable, welding cable, URD cable, XLPE insulated power calbe etc.
Bare Overhead Conductors are used in overhead transmission and distribution network applications.They are also used for un-insulated hook ups, jumpers, grounding conductors and other applications. Our Conductors conform to ASTM, IEC, BS, BS EN and DIN standards.…… Including: AAC conductor, AAAC conductor, ACSR conductor, ACAR conductor, AACSR conductor, etc.
Aerial bundled cables (also aerial bundled conductors or simply ABC) are overhead power lines using several insulated phase conductors bundled tightly together, usually with a bare neutral conductor. Our abc calbe conform to ASTM, IEC, SANS standards.……Including: abc cables, cvered line wire, service drop wire etc.
-> 70mm 4 core swa cable usage:
70mm 4 core swa armoured cable is suitable for the circuit with AC 50HZ, rated voltage 0.6/1KV, can be used in the power supply and distribution.
1. the highest rated temperature of the cable conductor is 70℃.
2. the maximum temperature of the cable conductor is not more than 60℃ at the time of the short circuit (the longest duration is not more than 5S).
3. when the cable is not less than 0℃, the minimum bending radius should not less than 10 times of the cable diameter.
-> VV series cable operation conditions:
1. when the cable temperature is not less than 0℃, the ambient temperature is not lower than the temperature of the cable, the cable shall be warmed.
2. the bending radius is not less than 2 times of the outer diameter of the cable.
3. after cable laying, should be subjected to DC withstand voltage test, the time is 15 min, the test voltage is 3.5KV.
-> Laying in air:
1. single core cable parallel laying, the central distance below 185mm2 is 2 times of the cable diameter, above 240mm2, is 90mm.
2. ambient temperature: 30℃.
3. the maximum allowable temperature of the conductor wire: 70℃.
4. correction factors for different ambient temperature:
Environment temperature:20℃ 25℃ 35℃ 40℃ 45℃
Correction factor:1.12 1.06 0.94 0.87 0.79
-> Buried:
1. single core electricity is not exposed, the central distance is 2 times of cable diameter.
2. ambient temperature: 25℃.
3. the maximum allowable temperature of the conductor wire core: 70℃.
4. soil thermal resistance coefficient: 1.0℃.M/w.
5. straight flat deep test: 0.7m.
6. different ambient temperature download flow correction factor:
Environment temperature:15℃ 20℃ 30℃ 35℃
Correction factor:1.11 1.05 0.94 0.88
Conductive wire core highest temperature when short circuit: 160℃
The maximum allowable short circuit current: I=94S√tA
-> 70mm 4 core swa cable suppliers:
There are many armoured cable suppliers in China, such as Huadong, ZMS, Jiapu, Tinde, Dongfeng, and many small commercial companies. In which Henan Jiapu is the famous wire & cable manufacturer in China, and our products have exported to many countries, such as Malaysia, Singapore, Nigeria, Ethiopia, Colombia, Chile, Vietnam, Laos, Thailand and other countries.
We can supply 70mm 4 core swa cable, but also can design single core armoured cable, 2 core armored cable, 3 core armour cable, 5 core cable, we also can custom special armoured cables according to customers' need. If you have any need, pls contact us by E-mail: [email protected]
-> 70mm 4 core swa cable usage:
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