Unveiling Fire-Resistant Principles Behind Fire-Resistant Cables

Definition of Fire-Resistant Cables

Fire-resistant cables refer to cables that can maintain safe operation for a certain period under flame-burning conditions. Their fundamental characteristic is that the cable can continue to operate normally for a period while under burning conditions. Specifically, fire-resistant cables can operate normally for a certain period while external flames are still burning, maintaining the integrity of the cable lines and ensuring the normal functioning of the line equipment.

Principle of Fire Resistance in Cables

Selection of fire-resistant cable materials: Mainly using fire-resistant materials such as mica tape, fiberglass tape, etc. These materials can maintain physical and chemical stability at high temperatures.

Mica tape

Mica is a natural inorganic mineral material with extremely high thermal stability, capable of maintaining insulation performance and structural integrity at high temperatures.

Fiberglass tape

This material does not burn at high temperatures and has good mechanical strength.

Multi-layer protection

A multi-layer structural design is used so that even if the outer material of the fire-resistant cable is damaged in a fire, the inner fire-resistant materials can still maintain the electrical properties of the cable.

Coordination of insulation and sheath materials

High-temperature resistant insulation materials and low smoke zero halogen sheath materials are selected. These materials can reduce burning and smoke generation under high temperatures, ensuring the safety of fire-resistant cables in fire conditions.

Fire Endurance Capability of Fire-Resistant Cables

The fire endurance capability of fire-resistant cables in fire conditions depends on their specific design and manufacturing process. Fire-resistant cables manufactured by Jin Lian Yu use high-quality materials and have much higher fire endurance capabilities compared to ordinary fire-resistant cables.

Typically, fire-resistant cables can withstand the following fire conditions:

Temperature

Generally, fire-resistant cables can continue to work for a period at high temperatures ranging from 850℃ to 950℃. In practical use, the temperatures the cables can withstand may be higher (e.g., mineral insulated cables can typically withstand temperatures above 1000℃).

Time

Fire-resistant cables can ensure continuous power supply for 90 to 180 minutes under fire conditions.

Combined effect of flame and mechanical impact

Under the dual conditions of direct flame burning and mechanical impact, fire-resistant cables can maintain the integrity of the circuit and continuous power supply within the specified time.

Waterproof and corrosion resistance

Fire-resistant cables usually have good waterproof and corrosion-resistant properties. Even when exposed to water during firefighting after a fire, they can still maintain their functionality.

JENUINcable is an experienced and professional fire-resistant cable manufacturer, committed to meet customer various requirements. Welcome to consult and purchase!