Solar photovoltaic systems are inseparable from photovoltaic cables.

Solar photovoltaic systems are inseparable from photovoltaic cables. The importance of solar photovoltaic cables is well understood by professionals. The importance of photovoltaic cables in a solar photovoltaic system is something we all remember deeply.

In order to reduce the system cost, the components and inverters of photovoltaic power plants are rarely configured in a ratio of 1:1, but a certain amount of over-provisioning is designed according to lighting conditions and project needs.

For example, for a 110KW module, a 100KW inverter is selected, and the maximum AC output current is about 158A according to the calculation of 1.1 times the over-matching of the AC side of the inverter.

The AC cable can be selected according to the maximum output current of the inverter. Because no matter how much the components are over-configured, the AC input current of the inverter will never exceed the maximum output current of the inverter.

Commonly used AC copper cables for photovoltaic systems include BVR and YJV. BVR means copper core PVC insulated flexible wire and YJV cross-linked polyethylene insulated power cable.

When selecting the type, pay attention to the voltage level and temperature level of the cable. , To choose the flame-retardant type, the cable specification is expressed by the number of cores, the nominal cross-section and the voltage level: the single-core branch cable specification representation, 1*nominal cross-section, such as: 1*25mm 0.6/1kV, means a 25 square cable.

Multi-core stranded branch cable specification representation, the number of cables in the same loop * nominal cross section, such as: 3*50+2*25mm 0.6/1KV, it means 3 live wires of 50 square meters, a neutral wire of 25 square meters and A 25 square ground wire.