Cable classification
Cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire resistant cables, marine cables, mining cables, aluminum alloy cables, and the like. They are composed of single or multi-strand wires and insulating layers for connecting circuits, electrical appliances, and the like.
According to the system of photovoltaic power station, the cable can be divided into DC cable and AC cable. According to the application and environment, the classification is as follows:
DC cable
(1) A series cable between components and components.
(2) Parallel cables between the strings and their strings to the DC distribution box (combiner).
(3) Cable between DC distribution box and inverter.
The above cables are all DC cables. They are widely laid outdoors. They need to be protected from moisture, sun, cold, heat and UV. In some special environments, chemical substances such as acid and alkali should be protected.
2. AC cable
(1) Connecting cable from inverter to step-up transformer.
(2) Connecting cable from step-up transformer to power distribution unit.
(3) The connection cable of the power distribution device to the grid or the user.
This part of the cable is an AC load cable, and the indoor environment is laid more. It can be selected according to the general power cable selection requirements.