Subway, Metro or Tunnel Use Mineral Insulated Cable for Fire Prevention are used for the applicataions on general lighting, emergency lighting, fire alarm, fire electrical wiring, ventilation wiring and life saving systems etc

Since the cables are all composed of inorganic materials (magnesium oxide) and copper, they themselves do not cause fire and are unlikely to burn or assist combustion. Since the melting point of copper is 1083℃, and the melting point of magnesium oxide is 2800℃, this kind of cable can continue to maintain power supply in the case of fire near the melting point of copper, which is a kind of fire prevention cable. At present, it is the only safe electricity transmission cable that can maintain power supply capacity for three hours in a 1000℃ fire and can withstand the impact of fire water spraying and heavy weight falling.

Composition of Mineral insulated cable

Mineral insulated cable is a kind of cable which uses annealed copper as conductor, dense magnesium oxide as insulation and annealed copper pipe as sheath. If necessary, it can be squeezed with a layer of plastic outer sheath around the annealed copper sheath. For specially required occasions, a layer of low-smoke halogen free sheath can be applied.

Advantages of Mineral Insulated Cables

Since all the materials of this cable are inorganic, it has some advantages that other cables cannot have, such as, fire prevention, high current carrying capacity, resistance to mechanical damage, non-toxic, non-halogen, explosion-proof, waterproof, corrosion resistance, long life, safety, overduty resistance, high temperature resistance, low cost, small bending radius, anti-ant, anti-rat bite, copper sheath used as a protective grounding wire and so on.

Product Coding System

Technical parameters

1. Rated voltage of mineral insulated cables:

Light duty (BTTQ, BTTVQ, WD-BTTYQ) 500V and heavy load (BTTZ, BTTVZ, WD-Bttyz)

2. Test voltage of finished mineral insulated cable:

Light duty 2000V/1min, heavy duty 2500V/1min

3. Insulation resistance for the mineral insulated cable should be more than 1000 m Ω, when the cable length is less than 100 m, insulation resistance should be greater than 10000 m Ω
4. Long-term working temperature of mineral insulated cables:

Mineral insulated cable long - term operating temperature is 70℃, in unmanned occasions, the long-term working temperature of material insulated cable is 105℃. In special high temperature occasions, the long-term working temperature can be up to 250℃. At 950-1000℃, it can continue power supply for more than 3h with the short or very short period, working temperature can reach 1083℃.

5. Bending radius:

The minimum allowable bending radius of mineral insulated cables conforms to a range of certain times of the cable diameter.

Pasia Industries is a scientific and technological enterprise specializing in researching, developing, producing, installing and providing technical consultation and service for mineral insulated heating cables, heating elements and finished heaters as well as welded honeycomb products for filtering, shielding, sealing and guiding. Located in Puyuan high-tech park, Zhejiang province, it covers an area of more than 10 hectares, with a construction area of more than 50,000 square meters. It possesses a convenient transportation, about 150 kilometers from Shanghai in the north and 40 minutes from Hangzhou Xiaoshan international airport in the south.

With the most professional production lines and the highest automation level in China, Pasia produces mineral insulated heating cables, heating elements and finished heaters, honeycomb cores of stainless steel, brass, nickel, aluminium and other metal or metal alloys according to international standards. Pasia is one of the top four professional manufacturers of industry in the world on capacity and sales. As leading technological products, they possesses advanced properties of good quality, many varieties, full specification range, wide application, long service life, good safety and easy maintenance etc., and have been successfully applied to oil and gas (extraction, transportation, storage, etc.), chemical industry （petrochemical industry, fine chemical, pharmaceutical, etc.), power (nuclear power, solar power, etc.), construction (melting ice and snow), railway, aviation, metallurgy, electronic and et al for the applications as heat tracing and heating, detecting, signaling, power transmission, as well filtering, shielding, guiding and sealing. The company has become one manufacturer of the few in the world of completely electric heating technology and products of four categories including constant wattage, temperature self-regulating, MI heating cable and skin effect resistance and one of the top three wire electric heating products suppliers. The honeycomb core has been widely used by many clients on filtering, water treatment, structure platform with high requirement on flatness, shielding, turbine sealing and straightening etc. It can not only provide complete categories of professional products, also provides customers with solutions, consulting, project reply, EPC project general contracting services which can even be extended to the services including safe operation for maintenance etc. So far, the company has possessed 25 related patented technologies, 13 national new products, and 12 national technological innovation projects.

Upholding a company spirit of leading innovation and win-win cooperation, Pasia has become one of the few in the industry who possesses complete capacity of research and development, design, production and installation of mineral insulated heating cable and its heating equipment, honeycomb core and its parts or modules both home and abroad, relying on professional team, advanced management means, close work with related universities, design institutes and scientific research units, industry leading R&D testing capacity, under the ISO9001 quality system. After several years’ hard and persistent efforts, Pasia have the ability to supply a complete set of products, excellent technical support and perfect follow-up service. A variety of products have not only been applied to meet the requirements from domestic market, but also exported to many countries and regions such as Europe, Asia, Africa and America to serve different categories of purposes. It receives a high visibility and reputation from the industry. Over the past years, the company has involved in thousands of projects from all walks of life, among which the most influential ones are:the explosion-proof natural gas electric heater at Datong natural gas gate station in Shanxi province; Electric heater for paint material for the production bases of Hempel (USA) paint company in Kunshan and Guangzhou; Electric heaters for Tongyi chemical system in Beijing, Lanzhou, Shanghai and Shandong; Complete heating and tracing equipment for large oil and gas fields in Jiangsu oilfield, Benin, Angola, Thailand, Myanmar, Kazakhstan, the UK, Canada; the wind or water tunnels of honeycomb core in Singapore, India, USA and UK, shielding honeycomb core applications from many foreign countries, honeycomb seals for the turbines from Russia etc.

Insists on serving market with sincerity, securing quality with technology, leading innovation with study and driving development with passion, Pasia has become a well-known provider of advanced heating technology solutions at home and abroad, and one of the fastest growing members in the industry.