this passage talks about inspections are generally required for high-voltage ring main units
When we use transformers, we need to pay attention to avoid accidents, such as water ingress and moisture in transformers, which is a problem that can cause transformer accidents and burnout.
Cables connected from the control center to various systems to transmit signals or control operation functions are collectively referred to as control cables.
Prefabricated substation, also known as box-type substation, is a vital component of the power system.
Rubber cable is a wire and cable with rubber as insulation layer and sheath. It consists of metal conductor, shielding layer, rubber insulation layer, etc.
Control cables and power cables are two different types of cables, which are very different in terms of use, structure, performance, etc.