Folding 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, etc. They are composed of single strand or multi strand conductors and insulating layers, which are used to connect circuits, electrical appliances, etc.
Cables can be divided into DC cables and AC cables according to the system of photovoltaic power station. According to different purposes and use environment, they are classified as follows:
1. DC cable
(1) Series cable between components.
(2) Parallel cables between strings and between strings and DC distribution box (combiner box).
(3) Cable from DC distribution box to inverter.
The above cables are DC cables, which are laid outdoors. They need to be moisture-proof, sun proof, cold resistant, heat-resistant and UV resistant. In some special environments, they also need to be protected against acid-base and other chemicals.
2. AC cable
(1) Connecting cable from inverter to step-up transformer.
(2) Connecting cable from step-up transformer to power distribution unit.
(3) Connecting cable from power distribution device to power grid or user.
This part of the cables are AC load cables, which are laid in many indoor environments, and can be selected according to the selection requirements of general power cables.
