Solar street light cable city street lamp price path selection method

According to the load current preliminary choose cable: 10 kv line, 10000 kva capacity corresponding to the rated current is: Ie = Se/( 1. 732*Ue) = 10000 / ( 1. 732 * 10. 5) =550A; Look-up table, 10 kv150 square millimeter of cross-linked polyethylene insulation aluminium cable in the directly buried in the ground, the temperature for



preliminary choose cable: according to the load current of 10 kv line, 10000 kva capacity corresponding to the rated current is: Ie = Se/( 1. 732*Ue) = 10000 / ( 1. 732 * 10. 5) =550A; Look-up table, 10 kv150 square millimeter of crosslinked polyethylene ( Polyethylene ( PE) Crosslinking technology is one of the important means to improve the performance of its material. 】 Insulating aluminium core cable in the directly buried in the ground, the temperature is 25 ℃ when the carrying capacity is 325 a, 10 kv240 square millimeter of cross-linked polyethylene insulation aluminum core cable in the directly buried in the ground, the temperature is 25 ℃ when the carrying capacity is 395 a, if choose copper core cable closure increased 1. Three times. To reach 550 a amount of river closure, need double root 10 kv185 square millimeter of crosslinked polyethylene insulation aluminum core cable or double root 10 kv240 square millimeter of crosslinked polyethylene insulation aluminum core cable, according to the reality of copper is more expensive, suggested that choose aluminium core cable. And according to the provisions of the regulations, solar street light after the cable fault repair time is long, should consider fully loaded on important occasions spare, namely should choose to run in parallel with 4 cable, when investment ability, shall be carried out according to the regulations, when insufficient funds, if the open and close station is dual power supply, can not consider to spare, if the opening and closing stand a single power supply, load is not too important, you can choose three cable ( Street light cable) , in parallel, usually make the load rate is not high, reduce the line loss, improve the quality of voltage, in case of a cable failure ( In general, but not two cable damage at the same time) , shut down a cable also can guarantee the normal power supply.