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XLPE Insulated Power Cable is usually called as cross-linked cable, has the characteristics of high operating temperature , big transmission capacity, perfect electric performance, no limit for placing dropping variance and easy to be installed and maintenance convenience, which is directive product of the power cable develops. The product is manufactured according to international electrician committee standard IEC60502-1997 and the National standards GB/T12706-2002, also defer to other national standards or the user requests to carry on the design and the production. and may produce being flame-resistant, fireproof, against mouse and the termite-proof, does not have uses and so on halogen low smoke environmental protection in the different situation serial products.
The product voltage level, amount of cores and section area
Note: the first category applies to the three-phase system in which the fault in every grounding process lasts less than 1 min; the second category to the three-phase system in which the fault in every grounding process lasts generally less than 2 hours, with a maximum of 8 hours.
2,Notes: ① as for models of single-core cables in brackets used for AC system, the single-core cables are shielded with non-magnetic materials.
② “ZR” before the models stands for flame-retardant products and “NH” for fire-resistant products.
3,The main technical indicators and the laying of the requirements
(1) DC resistant: every kilometer product core DC resistant should be no more than provision
(2) Voltage text: At ambient temperature, the cable conductor bring to bear 3.5Uo to ground , time 5min does not breakdown.
(3) Partial discharge text: 3.6/6KV and above on the products between the conductor and the metal shield voltage imposed 1.73 Uo, partial discharge does not exceed the amount 5Pc.
Maximum conductor work temperature of 90℃, 250℃ short time is not more than 5 seconds, when the cable laying the temperature should be less than 0℃. Cable minimum bend radius.
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