Marine cable is for all kinds of ships
and marine petroleum platform construction on water power, lighting and general
control wire and cable.
Implementation criteria: marine power
cable execution standard: IEC60092-350, IEC60092-353 or GB9331-88
The main parameters of marine power
cable are model, number of cores, combustion characteristics, rated voltage,
temperature, nominal section area and so on.
For all kinds of ship,
offshore oil platforms on water buildings lighting and general control
purposes. Power cable is used for transmission and distribution of high power
cable electrical energy in the main line of power system, including 1-500KV and
above voltage level, all kinds of insulated power cable.
The basic structure of power
cable is composed of four parts, which are the core, the insulation layer, the
shield layer and the protective layer.
Core of electric cable, used
to transport electrical energy, and is a major part of power cable.
Insulation layer: Isolate
cable more with earth and other phase cable core, to ensure the power
transmission, is an indispensable part of power cable structure.
Shielding layer: 15KV and
above power cable generally have a conductor shield and insulation shielding
layer.
Protective layer: the role is
to protect power cable from external impurities and moisture intrusion, as well
as to prevent external force direct damage to power cable external.
For all kinds of ships and
offshore oil platforms and other on water buildings general control purposes.
PVC insulated, PVC sheathed control cables ,AC rated voltage 450/750 volts for
control and protection circuits, etc.
Performance characteristics
1 DC resistance: 20℃, 0.4mm copper wire, less than or equal to 148Ω/km,
0.5mm copper wire, less than or equal to 95Ω/km.
2 Insulation electrical
strength: 1kV 1min between the conductor does not breakdown ,3KV 1min between
the shield does not breakdown
3 Insulation resistance: each
core wire and the rest wire grounding, control cable is greater than 10000 MΩ,
HYAT cable is greater than 3000 MΩ.
4 Working capacity: average
value is 52 + 2nF/km
5. Distal crosstalk ratio: the
specified 150kHZ combination of average power value is greater than 69dB/km.
used in all kinds of communication,
electronic computer, information processing equipment signal transmission and
control system. It has the advantages of high communication capacity, high
transmission stability, good secrecy, less natural conditions and external
interference.
Communication cable is classified as
follows:
1, single wire: refers to the most
primitive communication cable, single wire loop, to the earth as a return line.
2, Symmetrical cable: two same wire in
the ideal condition make a loop.
3, Coaxial cable: in the same axis of
inner and outer two conductor loop, outer conductor surround inner conductor,
and both insulation.
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