What are the fire protection measures for wires and cables?

In power systems, cables are important equipment for transmitting electrical energy. However, fire accidents caused by cable faults are common, posing a serious threat to the safety of people and property. Therefore, effective cable fire prevention and flame retardant measures are an indispensable means to ensure power safety.

1.The necessity of cable fire protection and flame retardant measures

Everyone should keep in mind the necessity of cable fire protection and flame retardant measures. First of all, cable fire retardancy can reduce or avoid the occurrence of fire accidents and ensure the safety of people's lives and property. Secondly, fire prevention and flame retardant measures can improve the fire resistance of cables and ensure the stable operation of the power system. Finally, fire prevention and flame retardant measures can reduce the impact of fire on the environment and protect the ecological environment.

2.Types of cable fire protection and flame retardant measures

(1) Cables should be wrapped with insulating and flame-resistant materials.

This method mainly involves wrapping the cable with insulating refractory materials, such as slag wool. Aluminum silicate fibers, etc., these materials have good thermal insulation properties and can effectively prevent the spread of fire. At the same time, if the cable itself catches fire, the lack of oxygen in the wrapping body can cause the fire to self-extinguish, preventing the fire from spreading outside the wrapping body.

(2) Blocking measures.

Sealing is mainly for the holes where cables pass through shafts, walls, floors or enter electrical panels or cabinets. Fireproof blocking materials are used for dense sealing to prevent the expansion of the fire area caused by the diffusion and spread of high-temperature smoke when the cable catches fire.

(3) Apply fire retardant coating.

Applying fire retardant coating on the surface of the cable can improve the fire resistance of the cable and reduce the impact of fire on the cable.

(4) Use fireproof tape.

Wrapping the parts of the cable that need to be flameproof can effectively prevent the spread of house cable fires.

(5) Install heat-resistant fire insulation panels.

Cables in cable trenches and cable tunnels should be segmented with firewalls, and interlayer fire-resistant partitions should be installed between power cables and control cables. Installing fire-resistant insulation boards between cable layers can prevent the cable layer from igniting and expanding the fire.

(6) Set up segmented partition walls and fire doors.

Setting up segmented partition walls and fire doors in cable channels can effectively prevent cables from flaring and expanding fires.

(7) Equipped with fire extinguishing equipment and facilities.

Automatic or remote control fire extinguishing devices, such as fire extinguishing equipment, water spray fire extinguishing devices, etc., should be installed in cable mezzanines, shafts, trenches, tunnels, etc.

All in all, taking effective cable fire prevention and flame retardant measures is an indispensable means to ensure power safety. Only through reasonable design, scientific construction and strict inspection can we minimize the risk of cable fire and ensure the safe and stable operation of the power system.