YTTW/YTTWY Rated voltage 750V and below metal sheath inorganic mineral insulated cable product introduction

  • Pictures
  • Introduction
  • Parameters

1 Implementation basis and standards

GB/T 2951-2008  Common test methods for insulating materials of  cable and optical cable insulation
GB/T  3048-207 Test methods for electrical  properties of electric wires and cables
JG/T 313-2011  Metal sheathed inorganic mineral insulated cables  and terminals with rated voltage 750V and below
BS 6387-1994  Cable performance requirements for maintaining line  integrity under fire conditions

2 use conditions

2.1  Rated voltage 750V and below various types of buildings  fire fighting system;
2.2 large shopping malls,  hospitals, airports, petroleum, chemical, nuclear power, aerospace, national  defense engineering, satellite launch, central control center and other  important places;

3 Product features

3.1 Long manufacturing length

Traditional  magnesium oxide mineral insulated cables using magnesium oxide insulation, Affected by equipment, production process, cable manufacturing length is  short, long distance installation requires the use of a large number of  intermediate joints, construction difficulty big electrical safety hazards.

The metal sheath inorganic mineral  insulated cable whether it is single core or multi-core cable, its length can  meet the needs of power supply, and the continuous length of each cable is up  to 1000m;

3.2 Large manufacturing cross section

The metal sheath inorganic mineral  insulated cable whether it is single core or multi-core cable, its length can  meet the needs of power supply, and the continuous length of each cable is up  to 1000m;

3.3 Soft and easy to bend

With a flexible cable can be set on the  plate, the bending radius of 6-10 times diameter;

3.4 Rating current and overload capacity

The cable is not only large rating  current, but also has a large overload capacity. According to wiring should be  shown, usually cable surface temperature is less than or equal to 70 DEG C, if  the wiring can not touch, nor with the combustible building materials contact,  cable sheath temperature can be increased to 105 degrees Celsius. Overload, the  long-term working temperature of fire resistant cable up to 250

3.5 Excellent fire performance, green environmental protection

Refractory grade is not only to meet the  national standard GB12666.6 class A, Run 950-1000 degrees Celsius, more than 3  hours. And can withstand fire rescue when pouring water, Mechanical shock of  the metal sheath inorganic mineral insulated cables when the buildings fall off  in fire, for the crowd evacuation and fire rescue provides great protection;  insulation adopts inorganic materials, burning smoke-free non-toxic, but will  not happen twice pollution. it is the real green environmental protection  products;

3.6 Corrosion resistance and good shielding performance

Corrosion resistance of copper sheath is  good, in the corrosive environment, should be made into polyolefin outer  protective layer. Due to the shielding of the copper sheath, no electromagnetic  interference, does not have the interference to the signal, the control wire  and cable transmission information.

3.7 Long service life

Resistance to high temperature is not  easy to aging, in the normal working state, It's service life in more than 80  years.

3.8 Good economy, convenient installation and construction

Flexible fireproof cable with good bending performance, convenient transportation and installation. And can be arbitrarily split, fast installation speed, short working hours;

4 Cable type and description

4.1 Code

Copper conductor…………………………………………………………………………………………………………………………………………..…………….…T
Inorganic mineral insulation…………………………………………………………………………………………………………………………………………..W
Longitudinal  package argon arc welding rolled copper sheath…………………………………………………..………….……………………T
PVC insulation…………………………………………………………………………………………………………………………….……………………..….…………V
PE  insulation…………………………………………………………………………………………………………………………….………………………........…….…Y

4.2 Product representation method

Description of product model (inorganic mineral insulated cables series code, Copper conductor, copper sheath, inorganic mineral insulated, rated voltage), specifications (core, the nominal cross-section) and standard code.

4.3 Type

5 Product structure

5.1 Schematic diagram of product structure


           
                          Specification Model:  YTTW-750KV-4*240mm2

 


                         Specification Model:  YTTW-750V-3*240+1*120mm2


                         Specification Model:  YTTWY-750V-4*240mm2

5.2 Product structure

5.2.1  Cable conductor: conductor by multi strand copper wire twisted possesses good flexural properties  and good electrical conductivity;
5.2.2 Insulation:  high insulating refractory mica and strong film and glass fiber composite refractory insulation layer,
5.2.3 Fill layer:  The product adopts inorganic mineral fiber materials, high temperature resistance, and  can effectively heat insulation, thermal insulation;
5.2.4 Metal sheath: copper  material, vertical packages argon arc welding metal sheath, through special  processing, with good bending performance, and can be used for grounding wire;
5.2.5 Outer sheath: according  to the custom requirements, can be directly produced metal sheath or PVC, PE  outer sheath. PE outer sheath is made of low smoke and nontoxic plastic  material. It has good corrosion resistance;


YTTW.jpg

YTTWY single core

YTTW/YTTWY single core 750V and below metal sheath inorganic mineral insulated power cable Technical parameters

YTTWY 3 core

YTTW /YTTWY (3 core) 750V and below metal sheath inorganic mineral insulated power cable Technical parameters

YTTWY 4 core

YTTW /YTTWY 4 core 750V and below metal sheath inorganic mineral insulated power cable Technical parameters

YTTWY(3+1 core)

YTTW /YTTWY (3+1 core) 750V and below metal sheath inorganic mineral insulated power cable Technical parameters

Note:The above data is for reference only; if the data in the table does not conform to the National Standard, please refer to the National Standard.

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