Fire-resistant cables are very popular. So, what are the different types of fire-resistant cables? Common types include NG-A, YTTW, BTTZ, BBTRZ, BTTRZ, and BTTVZ cables.
NG-A: The outer sheath is made of aluminum, meaning it's replaced by a longitudinally welded corrugated copper tape with an aluminum tape longitudinally welded corrugated tape. The cable core may be wrapped with several layers of fire-resistant insulation tape.
YTTW: Flexible fire-resistant cables/flexible mineral insulated cables, represented by YTTW cables, are made of multiple strands of twisted copper wire and offer excellent bending properties.
BTTZ: A cable with a seamless copper tube outer sheath, a core filled with magnesium oxide crystal powder as insulation, and a single copper rod conductor.
BBTRZ: A new generation of flexible fire-resistant cables, a mineral insulated relay without a metal sheath. While inheriting the performance of traditional fire-resistant cables, flexible fire-resistant relays require the same construction methods as conventional cables.
BTTRZ: A type of mineral insulated cable, BTTRZ is a flexible, fire-resistant cable. The manufacturing process for BTTRZ wire is similar to that for BTTZ cable, except that the cable is flexible and flame-retardant, making it easier to transport, more flexible, and safer to use.
BTTVZ: Mineral insulated cable, also known as fire-resistant cable, is a BTTZ mineral insulated cable with an additional outer sheath.
So what are the advantages of fire-resistant cable?
Fire-resistant cable itself does not burn or ignite other fires. Even if it burns, the cable can continue to operate without producing toxic gases.
Fire-resistant cable has strong overload protection. When the line is overloaded, as long as the melting point of copper is not reached, the cable will not damage and can continue to be used.
Fire-resistant cable has a high operating temperature, reaching a maximum of 250°C.
Because it uses seamless copper tubing as its sheath, fire-resistant cable is waterproof, moisture-proof, oil-proof, and explosion-proof.
Fire-resistant cable has a long service life, over three times that of ordinary cable.
Fire-resistant cables have excellent shielding properties and will not interfere with information transmitted by signal and control cables.
