Flexible Copper Sheathed Inorganic Mineral Insulated  Fireproof Cable

YTTW . YTTWV . WD-YTTWY .BTTW .BTTRZ .BTTE .BTWTZ .BTWTYZ .GAN-BTGY . HFTGB .HFTGBY

Usage

YTTW flexible fireproof cable is also known as copper sheathed embossed inorganic insulated cable. The cable is a new type of fireproof cable modified on the basis of the disadvantages of the mineral insulated cable. It can overcome the drawbacks of the limited production length of the mineral insulated cable, avoid the problem of the intermediate joint of the outlet in the installation, and has the insulating layer not easily damp. • The advantages of convenient installation and installation. With the continuous promotion of this product, his excellent performance has been more and more recognized by customers, and has been widely used in basic industrial and civil construction.

Characteristics

The conductor of YTTW series metal sheathed inorganic mineral insulated power cable adopts multi-strand copper stranded wire, the insulation is made of high temperature resistant synthetic mica tape, the outer layer of the insulating layer is filled with alkali-free glass fiber, and the sheath is welded with copper strip. The copper tube is formed by continuous rolling corrugation. Where a specific requirement is not to expose the metal sheath, a layer of polyolefin (low smoke zero halogen) jacket may be applied to the outside.

This product is the first in China and there is no prototype in the world. Compared with the BTTZ series, the product can maintain a high degree of fireproofing characteristics, and can achieve a continuous large length. It can also be made into a multi-core group cable within 95mm2, which overcomes the disadvantages of excessive joint construction and excessive construction difficulty. However, corrugated copper pipe welds are prone to cracking. Single mica insulation also becomes a congenital structural defect, and the requirements for installation process capability are still high.

The main function

1. Excellent fireproof performance, the fire resistance grade not only meets the international GB12666.6A class 950 °C, 90min, but also meets the A grade 650 °C3h specified in British BS6387-1994; B grade 750 °C 3h; C grade 950 °C 3h requirements; At the same time, it can withstand squirting and mechanical impact during combustion;

2. Long continuous length, whether it is single core or multi-core cable, its length can meet the power supply length, each continuous length can reach more than 1000m;

3. Large cross section, single core cable section up to 630mm2, multi-core cable up to 70mm2;

4. Flexible, the cable can be placed on the drum with a bending radius of 6-10D;

5. It is smoke-free and non-toxic when burning. The insulation is made of inorganic materials. It does not produce any harmful gases when burned, and it does not cause secondary pollution. It is a truly environmentally friendly green product.

6. The overload capacity is large, and the cable not only has a large load capacity, but also has a large overload capacity. According to the wiring instructions, the cable surface temperature is usually 70 °C. If the wiring is not touchable and does not come into contact with combustible building materials, the cable sheath temperature can be increased to 105 °C. The long-term working temperature of the fireproof cable can reach 250 °C when overloaded.

7. Corrosion resistance, good shielding performance, good corrosion resistance of copper sheath. In special or copper corrosive environment, a layer of low-smoke halogen-free or plastic outer sheath should be added to the copper sheath. Under the shielding of the copper sheath, there is no electromagnetic interference, and it will not interfere with the information transmitted by the signal and control wire and cable.

8. The safety is good. The fireproof cable can be normally supplied in the flame (normal power supply for more than 3 hours at 950 °C), and the fire extinguishing device is activated to reduce the fire damage. The copper sheath is a good conductor and is the best grounding wire, which greatly improves the sensitivity and reliability of the grounding wire protection.

9. Long service life, high temperature resistance and aging. Under normal working conditions, his service life is over 100 years.

10. Transportation of flexible fire-resistant cables. Installation. Installation accessories are simpler and similar to ordinary cables.

11. The economy is good. Due to the advanced manufacturing process and simple installation, the flexible fireproof cable has lower comprehensive cost than the mineral insulated cable under the same conditions.

Product Details

1．YTTW flexible fireproof cable structure

1. Cable conductor: Stranded with multiple strands of copper strands, with good bending characteristics.

2. Insulation: It is made of inorganic mineral insulation material that is resistant to high temperature and does not burn.

3. Copper sheath: copper material, which has good bending properties after special processing and acts as a PE wire.

4. Outer sheath: It is made of low-smoke, non-toxic plastic material with good anti-corrosion properties.

Example No.1:YTTW Mineral insulated cable structure

Example No.2:WD-YTTWY Mineral insulated cable structure

2.YTTW flexible fireproof cable types

Example 1: YTTW-0.6/1KV-(4x50) means: 4-core, 50mm2 cross-section flexible fireproof cables.

Example 2: YTTW-0.6/1KV-4x (1x185) means: 4core single-core 185mm2 cross-section flexible fireproof cables.

Example 3: WD-YTTWY-0.6/1KV-(3X25+1X16) means: 4 cores, 3 cores 25mm2 plus a 16mm2 secondary line flexible fireproof cable, plus a low-smoke halogen-free polyolefin protective outer sheath.

YTTW mineral insulated cable series also has YTTWV. WD-YTTWY .BTTW.BTTRZ .BTTE .RTTZ .BTWTZ .BTWTYZ .GAN-BTGZ .GAN-BTGY .HFTGB .HFTGBY and other models, in our company produce.

3.YTTW Fire resistance charactic of flexible fireproof cables

1. According to national standards, the test method for fire resistance of wire and cable burning method GB/T19216.21-2003 uses flame temperature 950 °C-1000 °C, burning time is 180min, the line remains intact.

2. According to the British BS6387 standard, the flexible fireproof cable can meet the following requirements:

Simple refractory C grade: 950 ° C 180 min: refractory water W grade: 650 ° C 15 min or more test in the same test in sequence).

4. YTTW Advantages of flexible fireproof cables

Excellent fire performance, fire resistance not only meets the international requirements of GB/T19216.21-2003 1000 ° C, 18 min, but also meets the CWZ three tests specified in British BS6387:2013 (refractory C grade 950 ° C 180 min. Spray W grade 650 ° C 15 min. Impact Z grade 950 ° C 15 min).