防火电缆种类:
Type of fireproof cable:
YTTW--防火电缆的外面是铜带纵包焊接轧纹,里面的缆心绝缘 采用耐火云母带绕包,最后成缆用玻璃纤维丝或者其他一些耐火的填充物。
Yttw - the outer surface of the fireproof cable is longitudinally
wrapped with copper tape, welded and rolled, the inner cable core
insulation is wrapped with fire-resistant mica tape, and finally the
cable is finished with glass fiber or some other fire-resistant filler.
BBTRZ--防火电缆和上面结构一样,就是把泥杆 保定古筝 塑料增韧剂 拱形护坡模具 保定空调维修 托辊生产线耐火云母带换成了陶瓷化硅橡胶带,这两种绝缘不同的电缆我也不知道哪种更好。
Bbtrz -- the fire-proof cable is the same as the above structure, that
is, the fire-resistant mica tape is replaced by the ceramic silicone
rubber tape. I don't know which of the two cables with different
insulation is better.
NG-A--防火电缆外护套用的是铝,也就是由铜带纵包焊接轧纹变成了铝带纵包焊接轧纹,里面的缆心可能会多绕几层耐火绝缘带。
Ng-a-the outer sheath of fire-proof cable is made of aluminum, that is
to say, the longitudinal welding rolling pattern of copper strip becomes
the longitudinal welding rolling pattern of aluminum strip, and the
inner cable core may be wound with several more layers of fire-resistant
insulating tape.
BTLY--防火电缆外面的保护采用连续挤压铝管,里面缆心的保护也同样是连续挤压包覆的铝管,电缆里外的铝管保护都是光杆,没有轧纹,这种电缆的弯曲性能肯定是没有纵包焊接然后轧纹的柔性防火电缆。
Btly - continuous extrusion aluminum tube is used for the protection of
the outside of the fire-proof cable, and the protection of the inner
cable core is also continuous extrusion coated aluminum tube. The
protection of the inner and outer aluminum tubes of the cable is smooth
rod without rolling marks. The bending performance of this kind of cable
is certainly flexible fire-proof cable without longitudinal welding and
rolling marks.