April 20, 2025

Some Problems to Be Noted When Installing Fire-resistant Cables

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The fire-resistant cable can still maintain the normal working of the line for a period of time under the burning conditions. In other words, in the event of a fire, the fire-resistant cable will not burn at once, and it can still maintain normal power supply for a period of time. This characteristic determines that the fire-resistant cable plays an important role in modern cities and industrial buildings, because once the fire occurs, the power supply circuits of the system such as control, monitoring, guidance, and alarm must maintain normal operation.
The main use of fire-resistant cables:
Fire-resistant cables are mainly used in power supply circuits such as emergency power supply to user fire-fighting equipment, fire alarm equipment, ventilation and smoke exhaust equipment, guided lights, emergency power sockets, and emergency elevators.
Staff should pay attention to the following issues when installing fire-resistant cables:
1. When fire-resisting cables are used in cable-intensive cable tunnels, cable mezzanines, or in flammable places such as near oil pipes and oil depots, Class A fire-resistant cables should be used first. When these conditions are removed and the number of cable configurations is small, Class B fire-resistant cables should be used.
2. Fire-resistant cables are mostly used as power supply circuits for emergency power supplies and require normal operation in fire. As the ambient temperature rises rapidly during a fire, in order to ensure the transmission capacity of the line and reduce the pressure drop, for a circuit with a long power supply line and strictly limiting the allowable voltage drop, the section of the fire-resistant cable should be enlarged at least one step.
3, fire-resistant cables can not be used as high-temperature cables.
4. In order to reduce the probability of failure of cable joints in a fire accident, the number of joints should be minimized during installation to ensure that the line can work normally in a fire. If you need to make branch wiring, handle the joints to prevent fire.

Bonding Metal Powder Coating

Bonding metal powder coating

We utilize advanced metal bonding techniques to give our products excellent batch stability and a metallic texture. Simultaneously, with our mature formulation system, we can achieve various texture effects in coatings. Rainbow Beauty metallic powder coatings are widely used in many fields such as household appliances, aluminum profiles, doors and windows, engineering construction, fitness equipment, transportation, and more.


PROPERTIES

Control the chromatc aberration Magnificent metal twinkle effect strong omament.
 among different batches effectively.



Non-toxic and safe:food grade. Good in mechanical and physical properties.


OPERATING PARAMETERS

l Pre-treatment

Pre-treatment

Pre-treatment

Degreasing, rust removal, sandblasting, phosphating, silane treatment, or ceramic coating, etc.

Attention

Before spraying, please ensure that the substrate is thoroughly degreased and rust-free, with no impurities, water stains, or residual liquid.

Note

Acid washing and sandblasting the substrate can enhance the adhesion between the coating and the substrate.


Spraying requirements

Cured condtions：15 mins. at 180℃ metal temperature Cured Film Thickness：80um.

Storage Stability
Keep storage environment well-ventilated and dry, with temperatures not exceeding 27°C.


Properties parameter

Items

Standard

Result

Impact

ASTM D-2794

80in.ibf（Direct)/20in.ibf（indirect)

Pencil Hardness

ASTM D3363

≧2H

Adhesion(100cells)

ASTM D-3359

Full pass (5B)

Flexibility

ASTM D522

3/16'inch

Salt spray resistance(5%Nacl)

ASTM B-117

1500H,Corrsion,≤3mm,

QUV Resistance(UV340)

ASTM G-154

1500H ΔE≤4


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Why choose Holyme

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