防火系統專用電纜
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本產品適用于0.6/1kv及以下的高層建筑物、地鐵、隧道、劇場、人防工程、石化企業等場所作輸配電線路或火災報警設備、通信設備等應急設施的供電線路及信號控制線路。電纜除低煙無鹵高阻燃特性外，還應能處在火
產品描述
本產品適用于0.6/1kv及以下的高層建筑物、地鐵、隧道、劇場、人防工程、石化企業等場所作輸配電線路或火災報警設備、通信設備等應急設施的供電線路及信號控制線路。電纜除低煙無鹵高阻燃特性外，還應能處在火焰燃
燒中正常工作180min，當火災發生時，不發生短路和斷路故障，一直保障電力供給，維持系統運行。并且燃燒時煙霧透光率高、毒性低，從而達到其防火安全和消防救生的功能。
It can be used not only to transmit and distribute power on the power line of 0.6/1kv voltage or below for high-rise building, subway, tunnel, theater, civil air defense engineering, petrochemical system, but also as power supply wire and signal control circuit of emergency facilities such as power transmission and distribution systems, fire alarm equipment and communications equipment and so on. Besides of features of LSZH and high flame resistance, it can also normally operate within 180min under the condition of flame burning. When the fire occurs, shor t-circuit and open circuit faults would not happen. It could endure continually supplying power and maintain the normal.
產品執行標準 ： 企標
Executive standard: enterprise standard
型號及名稱 Type
ZHT-DW-FRVV—防火專用電纜
ZHT-DW-FRVV— type special cable for fire resistance
使用特性 Characteristics
1、交流額定電壓U0/U ： 0.6/1kv A.C. rated voltageU0/U : 0.6/1kv
2、工作溫度：電纜導體長期工作溫度為70℃。
Long-term working temperature of cable conductor shall be 70℃.
3、敷設溫度：電纜敷設溫度不低于0℃。
Environment temperature for installation shall be no less than 0℃.
4、彎曲半徑：電纜彎曲半徑不低于電纜外徑的15倍。
Bending radium of cable shall be no less than 15 times that of cable outer diameter.
5、阻燃、耐火特性：符合GB/T19666-2005。
Flame resistance and fire resistance characteristics shall meet the requirements speculated in GB/T19666-2005 standard.
| 項目 Item | 單位 Unit | 技術指標 Technical Indicates | |||||
| 20℃時導體直流電阻≤ Conductor DC Resistance at 20℃ | Ω/Km | 截面 mm2 Cross section | 1.0 | 1.5 | 2.5 | 4.0 | 6.0 |
電阻 Resistance | 18.1 | 12.1 | 7.41 | 4.61 | 3.08 | ||
| 試驗電壓 Test voltage | V | 3.5KV，5min不擊穿。 Finished cable shall endure 3.5kv voltage test for 5 min without | |||||
| 絕緣電阻 Insulated resistance | MΩ | 10 | |||||
| 耐火特性 Fire-resistant properties | A類（火焰溫度750試驗90min，2A 熔絲不斷） Type A (flame temperature of 750 test 180min, 2A fuse continued)puncture. | ||||||
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