Wrinkles Copper Sheath Flexible Fireproof Cables

Structure of wrinkles copper sheath flexible fireproof cables
1. Cable conductor:made up of stranded copper wires,with favorable flexural property.
2. Insulation layer:adopts high-temperature resistant inorganic insulation materials.
3. Copper sheath:copper materials,through special machining,with favorable flexural property,used as PE wire.
4. Outer sheath:made of plastic materials of low-smoke non-toxicity, with favorable corrosion protection.

Model ofwrinkles copper sheath flexible fireproof cables

Eg.1:YTTW 4×50
It means 4wrinkles copper sheath flexible fireproof cablesof 50mm²in sectional area.
Eg.2:YTTW4×(1×150)
It means 4wrinkles copper sheath flexible fireproof cablessingle core of 150mm²in cross section.

Fire-resistant property of wrinkles copper sheath flexible fireproof cables
1. According to national standards,fire-resistant wire and cable fire test method characteristic test,according toGB12666.6
Glass A,bun in fire with flame temperature 950℃,apply voltage of750V between phase and phase andbetween phaseand outer sheath,it should be able to withstand for 90min without breakdown.
Class B,bum in fire with flame temperature 750-800℃,apply voltage of 750V between phase and phase and betweenphase and sheath,it should be able to withstand for 90min without breakdown.

2. According to the BS 6378,wrinkles copper sheath flexible fireproof cables satisfies the following requirements:

Class A 650℃ 3h

Class B750℃ 3h

Class C950℃ 3h

Class S950℃ 20min

Advantages of wrinkles copper sheath flexible fireproof cables

1. Excellent fireproof property,the fireproof rating not only satisfies the national standard GB12666.6:categoryA950℃ 90min,but also meet up with the U.K.standard BS6387-1994:class AC950℃ 3h;class B750℃3h;class C950℃3h;meanwhile,it also is able to withstand the water spraying or mechanical strike;
2. Long continuous length:the length can satisfy the length demand for power supply in spite of single-core ormulti-core cable,and continuous length of each cable can be as long as1,000m.
3. Large sectional area,sectional area of sinle-cope cable reaches 630mm。and that of multicore cable reaches70mm²;
4. Property of flexibility,the cable can be wound on the cable reel,with the benging radius 6-10D,(D is the outerdiameter of cable);
5.  Smoke-free non-toxicity when burning,it adopts inorganie materials(non-inflammable materials)for insulation,its burning would not produce any harmful gas or secondary pollution,it is aenvironmental protection product;
6.High overload capacity,the cable not only is high in current carrying capacity,but also has large overloadcapacity.Ac-cording to the wuring requirements。the surface temperature of cable usuallyis≤70℃,if it will not betouched or willnot contact with flammable building materials,the temperature of cable sheath can be heighten to 105℃.when coming across overload.10ng-term working temperatu re of fireproof cable can reach 250℃;
7. Property of corrosion proof,organice insulaated fireproof cable requires plastie tue or i ron tube sometimes,theplastic tube iS liable to deteriorate and iron tube is apt to rust or erode.but the fireproof cable has copper sheath and the tubeis need—less,besides,copper sheath has favorable corrosion resistance;
8. Free of electromagnetic interference,when wiring in the same vertical shaft with information wire and control wire,because of shielding of copper sheath,the fireproof cable would not interfere the single and control wires or cables;
9. Favorable safeness,it is able to supply power and start the fire extinguishing apparatus normally in flame,itreduces fire damage.besides,it is reliable for personel safety,as its copper sheath is a kind of good conductor,is the bestearthed PE wire,andcovers the whole cable,The life of up to 100 years;
10. Long service life,high-temperature resistance and degradation-resistance of inorganic insulated material,itsservice life is many times of that of organic insulated cables,under normal working conditions,its service life can be as longas that of buildings;
11. Transportation and packaging of wrinkles copper sheth flexible fireprofcables includ-ing installation fitings aresimple,nearl the same as that of general cables;
12. Favorable economicaleficieney,due to advanced manufacturing processes and simple installation,overall costof wrinkles copper sheath flexible fireproof cables is much Iower than that of mineral insulated cable underthe sameconditions.

Electrical characteristics of wrinkles copper sheath flexible fire proof cables
1. Rated voltage:0.6/1kV
2. Rated current:single-core 25A-1,800A;multi-core 16A-500A;
3. Insulation resistance:insulation resistance≥1000MQ·km.Cable length less than 100m,then the insulationresistance≥10000MQ。
4. Power frequency withstand voltage:apply voltage of 2,000V and 2,500V between phase and phase as well as phaseand copper sheath of cables of 500V and 750V respectively,they should be able to withstand for 15min without brokendown.

Q: What after-sales service guarantees does the company offer, and what is the response time?

A dedicated 400 service hotline is available, supported by nearly 150 after-sales teams nationwide. Customers can remotely monitor production and inspection status through an information platform.

Q: In which industries are the products primarily applied, and who are the key clients?

Applied in power, railway, aerospace, and other industries; major clients include State Grid, China Railway Corporation, Sinopec, and China Construction Third Engineering Bureau.

Q: What is the level of production and testing equipment?

The company possesses over 280 sets of first-class production equipment (e.g., a German 500kV vertical cross-linking production line) and over 120 sets of testing equipment (e.g., a US 700kV high-voltage testing system), along with an intelligent supervision system, ensuring leading equipment technology.

Q: What types of cable products does the company primarily manufacture?

The company specializes in three main categories: power cables rated 220kV and below, electrical equipment cables, and bare conductors. This encompasses over 100 product types and more than 40,000 specifications, including high-voltage and specialty cables (such as flame-retardant and fire-resistant types).

Q: What is the company's scale, and what percentage of employees are technical personnel?

With registered capital of 308 million yuan and total assets of 3.2 billion yuan, the company operates across a 160,000-square-meter facility. It employs nearly 600 staff, with technical personnel holding intermediate or senior professional titles accounting for 30% of the workforce. The company ranks among China's top 50 cable manufacturers.

Q: When was Jiangsu Dongfeng Cable Co., Ltd. established, and what are its core qualifications?

Founded in 1988, it is a “National High-Tech Enterprise” and “National Green Factory,” and has also been certified as a “Jiangsu Provincial Specialized, Refined, Distinctive, and Innovative Enterprise,” “AAA Credit Enterprise,” and “National Customer Satisfaction Enterprise.”