求助电缆选型标准

20.2All cables shall be steel wire armored suitable to be run in pipe racks as well as buried
below ground.
所有电缆都应是钢丝铠装电缆，适用于穿管埋地

20.3Single pair cables shall have 1.5mm2
conductors and multi-pair cables shall have
1.0mm2
conductors as a minimum.All cables shall be provided only with an overall
shield. All multi-pair cables shall be provided with 10% spare conductors.
单对电缆最少为1.5mm2截面积，多芯电缆最少是1.0mm2截面积。所有电缆应提供一个总护套，所有多芯电缆应提供10%余量

20.4All cables shall utilize compounds that are low smoke zero halogen with an oxygen
index of not less than 30, temperature index not less than 260°C, and acid emission less
than 0.5% in accordance with IEC-752 part-2.
所有电缆为低烟无卤聚合物，氧化指数不低于30%，烟气指数不低于260，酸性物质低于0.5%，依据IEC-752 part-2标准。

20.5All cables used for process measurement and control and are not associated with any
shutdown functions shall be flame retardant complying with IEC 60332 part 3 (Cat ‘A’).
All non-intrinsic safe circuit cables shall be provided with a black color outer sheath to be
UV-resistant. All cables used in intrinsic safe circuits shall be provided with a blue color
outer sheath.
所有用于工艺测量和控制的电缆不能跟紧急停车功能混在一起，阻燃性依据IEC 60332 part 3 (Cat ‘A’)，
非本安回路电缆为黑色护套抵抗紫外线，本安回路电缆为蓝色护套。

20.6All cables used in shutdown circuits and fire detection systems shall be fire resistant to
IEC 60331.
紧急停车回路和火检系统电缆阻燃性依据IEC 60331。
20.7All cable glands in outdoor service shall be weather proof as per IEC 60529 IP 65.
室外格兰根据IEC 60529 天气防护等级为IP 65.

20.8Cable glands used in the plant area shall be of the double compression type certified
Ex‘d’ – brass nickel plated, suitable for Zone 1, Gr. II A