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This product is apply to the waterproof power supply system like port,hydro power station, ship lock, tunnel, chemical industry,metallurgy, reservoir, water works, garden lamp and so on.
2、Type and Specification
3. Operational Performance
a. Cable conductor allowed long-term working temperature not exceeding 90 ℃.
When short circuit happened (the duration no longer than 5 seconds), the maximum temperature of cable conductor is not exceeding 250℃.
b. When laying cable, the ambient temperature should not be lower than 0℃, if not the cable need to be preheated. The bending radius of three cores unarmored cable should not be less than 12 times of outer diameter of cable, 15 times for armored cable.
c. Cable DC resistance should comply with GB/T 3956-1997.
d. Power frequency voltage withstanding test:2.5 U0 +2kV/5min no breakdown.
e. water permeability test should conform to the requirements of GB/T12706.2.
4、Cable structure diagram
1-Conductor 2-Insulation 3-Filling 4-Taped covering
5-Innersheath 6-Waterproof layer 7-Outer sheath
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