Related standards and specifications relating to cable selection

1, DL /T 5044-2004 People's Republic of China power industry standard

When multi-core cable is selected, its allowable carrying capacity can be calculated according to the numerical value of single-core cable of the same section. Copper core cables should be selected for the control and signal cables drawn from the DC cabinet. The voltage drop should not be greater than 5% of the nominal voltage of the DC system. The selection and laying of DC cables shall comply with the relevant provisions of GB 50217.

2, GB 50217 Design specification for electric power engineering cables

Two-core cables are recommended for the DC power supply circuit, and single-core cables can be used when necessary. PVC insulated cable should not be used in high temperature (above 100℃) or low temperature (below -20℃). When laying cables directly, when the cable is under greater pressure or has the risk of mechanical damage, the steel tape armored cable should be used. The temperature of the cable core under the action of the maximum working current shall not exceed the allowable value determined according to the service life of the cable.

3, the choice of cable path should comply with the following provisions

(1) Avoid cable from mechanical external force, overheating, corrosion and other hazards.

(2) Make the cable shorter under the condition of meeting the safety requirements.

(3) Easy to lay and maintain.

(4) Avoid the place where the construction will be excavated

(5) The changing parts of the cable in any laying method and all path conditions should meet the requirements of the allowable bending radius of the cable.

Photovoltaic power generation system cable types are: photovoltaic special cable power cable control cable communication cable RF cable

Photovoltaic special cable:

The cable group to the bus box is generally used: PV special cable PV1-F 1*4mm.

Features: photovoltaic cable, simple structure, the use of polyolefin insulation material has excellent heat resistance, cold resistance, oil resistance, ultraviolet resistance, can be used in harsh environmental conditions, with a certain mechanical strength.

Laying: It can be protected in the pipe, and the component bracket is used as the channel and fixed for cable laying to reduce the impact of environmental factors.

Qingdao Tianxing Cable Co., Ltd. is a technology enterprise specializing in the production of wire and cable in Shandong Province, with more than 150 sets of domestic excellent cable production equipment and testing equipment, excellent production technology, modern testing equipment, to ensure stable product quality and timely supply. The company's main products are power cable, mineral cable, high life wire and cable, radiation crosslinked cable, control cable, computer cable, photovoltaic cable, communication cable, data cable, low smoke halogen free cable, flame retardant series wire and cable.

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