For high-rise buildings, oil fields, power plants, power plants, mining, chemical, mine, subway and other requirements where a high fire conditions, but also emergency power supply, fire pump, elevator communication signal system should be prepared cable, the product has a high fire ability to withstand direct flame burning in the case of a certain period of time (not less than 3h) is not a short circuit and open circuit failure, to ensure continued supply to maintain the light and transmit signals to protect the safety of staff have enough time to evacuate, and help fire fighting and reducing losses. 


 ■ Standard: enterprise standard 

 ■ use features: 
 1, the power frequency rated voltage U0 / U: 0.6/1kV. 
 2, of the conductor to allow long-term working temperature: 
 Flame-retardant PVC: 70 ℃ / 105 ℃. 
 XLPE: 90 ℃ 
 3 The ambient temperature should be not less than 0 ℃ 
 4, the cable bend radius: 
 Power Cable: Single cable ≥ 40D, multi-core cable ≥ 30D control cable: ≥ 12D 
 B series plastic wire: ≥ 4D (when the cable diameter is less than 25mm), ≥ 6D (when the cable diameter greater than 25mm) 
 5, fire-resistant than the cable diameter: 25mm2 cross section less than the average size of similar types of products is 15% more than 25mm2 cross section of the specifications of similar products than the average 25% larger. 
 6, the product of electrical performance, mechanical properties, the same carrying capacity and general product 
 7, the fire resistance test standard using IEC331 or GB12666.6 

 ■ Cable Model name: 
 A fire-resistant power cable 

 Model 
 Name 
 For occasions 

 NH-VV 
 PVC insulated and sheathed power cable B class fire 
 Laying indoor, tunnel and cable trench, the occasion could not bear external mechanical forces. 

 NH-YJV 
 XLPE insulated PVC sheathed power cable B class fire 

 NH-VV22 
 PVC insulated PVC sheathed power cable B class fire 
 Laying indoor, tunnel, cable trench, or buried so can withstand the mechanical force of the occasion, but can not withstand large pulling force 

 NH-YJV22 
 XLPE insulated PVC sheathed power cable B class fire 


 2 fire-resistant control cable 

 Model 
 Name 
 For occasions 

 NH-KVV 
 PVC insulated and sheathed control cable B class fire 
 Laying indoor, tunnel and cable trench, the occasion could not bear external mechanical forces. 

 NH-KYJV 
 XLPE insulated PVC sheathed control cable B class fire 

 NH-KVV22 
 PVC insulated and sheathed control cable B class fire 
 Laying indoor, tunnel, cable trench, or buried so can withstand the mechanical force of the occasion, but can not withstand large pulling force 

 NH-KYJV22 
 XLPE insulated PVC sheathed control cable B class fire 


 3 fire wire (cable) 

 Model 
 Name 
 For occasions 

 NH-BV 
 Class B fire-resistant PVC insulated copper wire 
 Fixed laying the occasion you need fire 

 NH-BVV 
 Copper core PVC insulated and sheathed cables B class fire 


 ■ Caution: 
 1, cable connector, the conductor and insulating mica tape overlap between the application of four around the wrap and seal as a fire-resistant layer, and other similar products with the same construction method. 
 2, the cable should be strictly avoided sharp damage, otherwise it will reduce the fire resistance of cable. 

 ■ Related Products: 
 Low smoke and low halogen flame retardant control cable 


 Halogen-free flame retardant, fire-resistant cables 


 Related Links 
 The definition and types of special cables 

 Power cables and control cables What is the difference 
 Wire and cable applications and the basic structure of the classification 
 The causes of the cable caused 
 Why armored cable and Stranding