昆明惠博电缆桥架厂

电缆桥架的结构要求

昆明电缆桥架地结构要求
一、电缆桥架防护等级
1.无孔托盘地整体防护等级应符合GB-4208-2008中IP30的规定。
2.耐火电缆桥架防护等级应符合GB-4208-2008中IP44的规定。
二、电缆桥架材料
1.钢制电缆桥架及附件所用材料应符合GB/T 700-2006、GB912-2008、GB/T 11253-2007、GB/T3280-2007中的规定。
2.铝合金制桥架及附件，其材料都应符合GB/T3880.1-2006和GB/T 6892-2006的规定。
3.玻璃钢桥架及附件，其材料应符合GB/T 8237-2005和GB/T 18370-2001及GB/T 18369-2008中的中碱玻璃钢纤维的规定。其他非金属耐火材料制
桥架应符合材料自身标准要求。
4.螺栓、螺母、平垫圈、弹簧垫圈等紧固件，应分别符合GB/T5780-2000、GB/T 6170-2000、GB/T97.1-2002、GB/T93-1987和GB/T12-2013的规定。
三、耐火桥架中防火层的非金属耐火材料应符合GB8624-2012中燃烧性能不低于B级的规定。

Kunming cable bridge structure requirements

1. Cable bridge protection level

1. The overall protection level of the imperforated pallet shall comply with the provisions of IP30 in gb-4208-2008.

2. The protection grade of fire-resistant cable tray shall comply with the provisions of IP44 in gb-4208-2008.

Cable bridge materials

1. Materials used for steel cable Bridges and accessories shall comply with the provisions of GB/T 700-2006, gb912-2008, GB/T 11253-2007 and GB/ t3280-2007.

2. Aluminum alloy bridge frames and accessories, whose materials shall comply with the provisions of GB/ t3880.1-2006 and GB/T 6892-2006.

3. The GFRP bridge frame and its accessories shall be made of materials in accordance with the provisions of GB/T 8237-2005 and GB/T 18370-2001 and GB/T 18369-2008. Other non-metallic refractory materials

The bridge shall meet the material itself standard requirements.

4. Fasteners such as bolts, nuts, plain washers and spring washers shall comply with the provisions of GB/ t5780-2000, GB/T 6170-2000, GB/ t97.1-2002, GB/ t93-1987 and GB/ t12-2013 respectively.

Iii. The non-metallic refractory of fire resistant layer in fire resistant bridge frame shall comply with the provisions of gb8624-2012 that the combustion performance shall not be lower than class B.