Mineral Insulated Cable

  • Isolated flexible mineral insulated cable BTLY (NG-A)
Isolated flexible mineral insulated cable BTLY (NG-A)

Isolated flexible mineral insulated cable BTLY (NG-A)

  • Isolated flexible mineral insulated cable BTLY (NG-A)
  • Product description: Isolated flexible mineral insulated cable BTLY (NG-A) is a kind of isolated flexible mineral insulated fireproof cable which is popular on the market. Most of the park and factory fire escape systems
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Isolated flexible mineral insulated cable BTLY (NG-A) is a kind of isolated flexible mineral insulated fireproof cable which is popular on the market. Most of the park and factory fire escape systems use BTLY cable, which is an improved type of BTTZ heavy-duty copper core mineral insulated cable.
Isolated flexible mineral insulated cable BTLY (NG-A) model name resolution:
B----Mineral insulated cable for wiring
T----copper conductor
L----aluminum metal sleeve
Y----polyvinyl chloride outer sheath
Isolated flexible mineral insulated cable BTLY (NG-A) structure:
1. The conductor is a round copper strand (relative to the solid copper rod of BTTZ)
2. The insulating layer is pure gold mica tape (no longer combined with extruded insulation material, thereby eliminating the generation of carbon particles and improving the electrical stability)
3. The metal sleeve is a continuously extruded aluminum metal tube (which greatly simplifies the BTTZ copper tube drawing process).
4, isolation sleeve (cross-linked insulation)
5. The refractory layer (in the case of an inorganic substance which is infusible and inflammable under flame, Mg(OH)2 or AI(OH)3),
6. Outer sheath plastic (polyolefin).
Second, BTLY cable performance:
BTLY cable length can be delivered according to the user's needs.
BTLY mineral insulated cable can be laid without additional pipe, and has the same waterproof and anti-shock function as BTT.
At the same time, BTLY series mineral insulated cable has good anti-ant, anti-mouse, anti-radiation and other functions to ensure cable stability, long life and durability.
Low working temperature, low line loss, strong anti-overload capability, long service life and high safety, especially suitable for applications with environmental protection requirements.
The fire performance design of BTLY mineral insulated cable is strictly in accordance with the British BS6387 standard and the International Electrotechnical Commission IEC standard.
The conductor of BTLY cable is made of stranded copper wire, and the insulating layer is made of mineral insulation material. The aluminum sheath is made of aluminum soft sheath and processed by special process. The isolation layer is made of magnesium hydroxide or aluminum hydroxide mineral material, and the outer sheath is made of low-smoke halogen-free or better plastic material. The BTLY cable is the first in China and there is no prototype in the world. Compared with the BTTZ series metal outer sheathed cable, the product can achieve continuous large length and 240mm cable can be multi-core cable, which overcomes the shortcomings of too many joints.
BTLY cable is made of aluminum as the main material. Metal tube extrusion instead of copper tube drawing not only simplifies the process, but also improves the efficiency of the product, and the product cost is greatly reduced (aluminum is only 1/10 of the total cost of copper). The reason why aluminum tubes can replace copper tubes and not melt under high temperature flames, thanks to the expanded refractory layer extruded outside the aluminum tubes: under the flame attack, the expansion layer foams and solidifies, forming a thick barrier to block the flame against aluminum. Direct injection of the tube. Not only the integrity of the aluminum tube is preserved, but also the temperature of the mica tape is reduced to below 600 °C, and the stability of the mica tape insulation is undoubtedly improved (the insulation resistance of the mica tape increases with decreasing temperature).
Isolated flexible mineral insulated cable BTLY (NG-A) production standards:
1. BS 6387:1994 Performance requirements for cable retention circuit integrity under flame conditions;
2. GB/T12706.1-2008 "Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cable and accessories";
3. Follow the corresponding corporate standards.
BTLY cable features
1 Refractory standard can be tested by BS6387 three times: no breakdown under 950 °C 3h flame, 15min water spray after 650 °C 30min (direct immersion can also be), 15min percussion vibration under 950 °C flame without destroying Therefore, the BTT evaluation standard is fully achieved in the fire resistance performance.
2 The product can produce 1~37 cores in 1.5~6 square meters, 1~5 cores in 10~240 square meters, and single core in 300~630 square meters. The length can be delivered according to the needs of users. .
3 It is not necessary to wear a pipe when laying, and it has the same waterproof and anti-shock function as BTT.
4 It has good anti-mouse, anti-ant and anti-radiation functions to ensure the stability, long life and durability of the cable.
5 Low working temperature, small line loss, strong anti-overload capability, long service life and high safety. It is especially suitable for applications with environmental protection requirements.
6 Explosion-proof (highly compacted insulation material in the cable and cable termination installed by special sealing sleeve can prevent steam, gas and flame from entering the electrical equipment connected with the cable, so it is used in places with explosion hazard and various explosion-proof equipment and equipment. Connected.)
7 corrosion resistant (BTLY mineral insulated cable metal sleeve has high corrosion resistance, for most devices, it does not need to take additional protective measures; even if the metal sheath of the cable is susceptible to chemical corrosion or industrial pollution The place, because the outermost layer of the cable is protected by a plastic outer sheath, it is still safe.)
8 High mechanical strength (BTLY mineral insulated cable is sturdy and durable, can still work normally when the cable diameter is deformed by one-third, even if subjected to severe mechanical damage, it will not damage its electrical performance.
Isolated flexible mineral insulated cable BTLY (NG-A) are mainly used in trunk lines, fire lines, and escape and rescue systems, such as emergency lighting, fire monitoring, alarm systems, elevator systems, smoke exhaust systems, and control lines.

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