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YTTW (flexible fire prevention)
This product is used for AC 50 Hz rated voltage 0.6/ikV and below fire and emergency light system transmission and distri-bution lines.
Related Products
1.lmplementation of standards
The mechanical and physical properties and electrical properties of the cable are implemented in the relevant enter-prise standards, British standards BS 6387:2013 and BS 8491:2008.
2. Scope of use
This product is used for AC 50 Hz rated voltage 0.6/ikV and below fire and emergency light system transmission and distri-bution lines.
3.cable structure
1.conductor
2.Inorganic mineral insulatio
3.Flame retardant filling
4.High flame retardant strip
5.Metal rolled sheath
4.Use characteristics
Rated working voltage: 450/750V, 0.6/1kV
Minimum allowable bending radius of cable:
|
Cable outer diameter mm |
D≤12 | 12D20 | 20D40 |
| Allowable bending radius of cable | 6D | 10D | 15D |
(D is the outer diameter of the cable)
5.cable type, name, laying occasion
| Model | Voltage class | Specifications | Core | Name | Laying occasion |
|
YTTW(BTTW) |
450/750V 0.6/1kv |
1.5-630mm2 | 1-5 | Copper core corrugated copper sheathed inorganic mineral insulated flexible fireproof cable | Can be laid indoors, in cable wells, cable tunnels, bridges, brackets, hangers and cable ducts |
|
YTTWY(BTTWY) |
450/750V 0.6/1kv |
1.5-630mm2 | 1-5 | Copper core corrugated copper sheathed inorganic mineral insulated polyolefin anti-corrosion jacket flexible fireproof cable | Can be directly buried, laid indoors, outdoors, in cable wells, cable tunnels, bridges, brackets, hangers and cable ducts |
6.cable structure parameters, electrical parameters
| Nominal cross section mm2 |
Conductor diameter mm |
Composite insulation thickness |
Approximate outer diameter of cable mm |
Approximate cable weight kg/km |
Maximum DC resistance of conductor at 20℃ Ω/km |
Maximum DC resistance of copper sheath at 20℃ Ω/km |
Long-term allowable current carrying capacity (A) in air |
| 1×1.5 | 1.36 | 0.8 | 5.8 | 94.50 | 12.1 | 2.677 | 26 |
| 1×2.5 | 1.78 | 0.8 | 6.6 | 116.39 | 7.41 | 2.329 | 34 |
| 1×4 | 2.25 | 0.8 | 7.1 | 138.03 | 4.61 | 2.168 | 44 |
| 1×6 | 2.76 | 0.8 | 7.6 | 165.28 | 3.08 | 2.017 | 58 |
| 1×10 | 4.1 | 1.0 | 9.4 | 232.65 | 1.83 | 1.625 | 77 |
| 1×16 | 5.0 | 1.0 | 10.7 | 306.26 | 1.15 | 1.421 | 100 |
| 1×25 | 6.0 | 1.0 | 11.7 | 405.95 | 0.727 | 1.296 | 128 |
| 1×35 | 7.0 | 1.1 | 13.3 | 517.81 | 0.524 | 1.136 | 163 |
| 1×50 | 8.2 | 1.2 | 14.7 | 696.16 | 0.387 | 0.826 | 200 |
| 1×70 | 9.9 | 1.2 | 17.0 | 945.53 | 0.268 | 0.711 | 253 |
| 1×95 | 11.6 | 1.2 | 18.9 | 1219.09 | 0.193 | 0.638 | 317 |
| 1×120 | 13.0 | 1.2 | 20.3 | 1469.23 | 0.153 | 0.593 | 361 |
| 1×150 | 14.5 | 1.4 | 23.0 | 1783.87 | 0.124 | 0.522 | 412 |
| 1×185 | 16.2 | 1.4 | 24.7 | 2150.42 | 0.0991 | 0.485 | 479 |
| 1×240 | 18.4 | 1.4 | 27.5 | 2809.28 | 0.0754 | 0.364 | 576 |
| 1×300 | 20.7 | 1.6 | 30.2 | 454.84 | 0.0601 | 0.331 | 654 |
| 1×400 | 23.5 | 1.6 | 34.2 | 4304.32 | 0.0470 | 0.291 | 749 |
| 1×500 | 26.7 | 1.8 | 37.6 | 5372.41 | 0.0366 | 0.265 | 855 |
| 1×630 | 30.4 | 2.0 | 41.9 | 6807.94 | 0.0283 | 0.237 | 998 |
Conductor operating temperature: 90°C
Air humidity: 40℃
Our advantage
High transmission efficiency
Cables can efficiently transmit electrical energy and signals, providing stable power supply and communication transmission.
Strong anti-interference ability
The insulation layer of the cable can effectively isolate external electromagnetic interference and provide reliable signal transmission and power distribution.
Safe and reliable
The cables are professionally designed and manufactured, have good heat resistance, pressure resistance, and weather resistance, and can work safely and reliably under various environmental conditions.
Cost effective
Compared with other power transmission methods, such as aerial power transmission, cables have the advantages of small footprint and low line loss, saving resources and costs.
Flexible and diverse
Cables can be customized according to different needs, including the selection of conductor materials, insulation layer materials, number of cores, cross-sectional size and other parameters, and are suitable for different scenarios and applications.
Long life
High-quality cables are properly designed and manufactured to have a long service life, reducing maintenance and replacement costs.
Energy saving
Cables do not need to burn fuel when transmitting electrical energy, do not produce waste gas and environmental pollution, and meet the requirements of sustainable development.
High transmission efficiency
Cables can efficiently transmit electrical energy and signals, providing stable power supply and communication transmission.
Strong anti-interference ability
The insulation layer of the cable can effectively isolate external electromagnetic interference and provide reliable signal transmission and power distribution.
Safe and reliable
The cables are professionally designed and manufactured, have good heat resistance, pressure resistance, and weather resistance, and can work safely and reliably under various environmental conditions.
Cost effective
Compared with other power transmission methods, such as aerial power transmission, cables have the advantages of small footprint and low line loss, saving resources and costs.
Flexible and diverse
Cables can be customized according to different needs, including the selection of conductor materials, insulation layer materials, number of cores, cross-sectional size and other parameters, and are suitable for different scenarios and applications.
Long life
High-quality cables are properly designed and manufactured to have a long service life, reducing maintenance and replacement costs.
Energy saving
Cables do not need to burn fuel when transmitting electrical energy, do not produce waste gas and environmental pollution, and meet the requirements of sustainable development.
Understanding Requirements
Providing Custom Solutions
Providing Samples and Technical Support
Ordering and Production
Logistics and After-Sales Service
Looking forward to hearing from you!
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