intrinsically safe cable

intrinsically safe cable 1   Rated voltage: 300/500V.
2   The Max. Permitted continuous operating temperature of conductor:PE insulated cable: 70℃;XLPE insulated cable: 90℃;PVC insulated cable: 70℃, 90℃, 105℃(according to the grade of heat proof after the type);Low-smoking and halogen-free Polyolefin (HFPO) insulated cable: 90℃.
3   The Min. laying temperature is:-20℃ for PE sheathed cable;0℃ for PVC or HFPO sheathed cable.It should be pre-heated if it is below the Min. laying temperature.
4   The operating capacitance between shielded pair(1kHz) is:  No more than 125pF/m for PE or XLPE insulated cable;No more than 250pF/m for PVC insulated cable.
5   The inductance is no more than 60μH/Ω.
6   The capacitance unbalance between groups is no more than 300pF when the cable is 250m in length, and the test frequency is 1kHz.
7  The cable has the properties resisting the interference derived from outside magnetic field, electromagnetic field and static electric field.
7.1  When the test frequency is  50~60Hz and the magnetic strength is 400A/m, the voltage of the cable interfered from magnetic coupling is no more than 1mV.
7.2  When the test frequency is 27~200MHz, the shielding efficiency of  resisting the electromagnetic interference of the cable is no less than 50dB.
7.3  When the test static electric field is 10000V/cm, the voltage of the cable interfered from capacity coupling is no more than 3V.
8   The permitted bending radius:No less than 12 times of the overall diameter of the cable for the armored or wrapped shield cable.
9   Flame characteristicsintrinsically safe cable