intrinsic safety type computer shielding cable
http://www.ahdqjt.com time: 11/04/10 10:30
it is used to transmit automatic control signal in the environment not only with exploding danger such as petroleum, chemical plant, power, gas project and mine but also with high demand on explosion proof performance. it is decentralized type instrument signal cable with the feature of low capacitance & low inductance & good shielding performance and interference proof performance, which is also named as intrinsic safety type cable for dcs system. so, its performance of explosion-proof & safety is apparently higher compared with common computer control cable and cable for dsc.
executive standard: enterprise standard
performance for usage
- ac rated voltage u0/u, 300/500v
- max temperature of cable conductor for long term working is 70℃ for cable with pe insulation, 90℃ for cable with xlpe insulation and 70℃ for cable with free halogen, low smoke, flame retardant, polyolefin insulation.
- min. environment temperature is -40℃ for fixed laying and -15℃ for non-fixed laying. environment temperature for installing is no less than 0℃
- bending radius allowed by cable is no less than 6 times that of cable od for inarmored braided shielding cable and 12 times that of cable od for copper tape shielding, armored cable.
basic type and description:
type |
description |
ia-djypvp |
intrinsic safety type cable for dcs system with cu core, pe insulation, pvc sheath, copper wire braided general & individual shielding |
ia-djypvpr |
intrinsic safety type soft cable for dcs system with cu core, pe insulation, pvc sheath, copper wire braided general & individual shielding |
ia-djyp3vp3 |
intrinsic safety type cable for dcs system with cu core, pe insulation, pvc sheath, aluminum-plastic compound tape wrapped general & individual shielding |
ia-djyp3vp3r |
intrinsic safety type soft cable for dcs system with cu core, pe insulation, pvc sheath, aluminum-plastic compound tape wrapped general & individual shielding |
ia-djyp2vp2 |
intrinsic safety type cable for dcs system with cu core, pe insulation, pvc sheath, copper-plastics compound tape wrapped general & individual shielding |
ia-djyp2vp2r |
intrinsic safety type soft cable dcs system with cu core, pe insulation, pvc sheath, copper-plastic compound tape wrapped general & individual shielding |
ia-djyjpvp |
intrinsic safety type cable dcs system with cu core, xlpe insulation, pvc sheath, copper wire braided general & individual shielding |
ia-djyjpvpr |
intrinsic safety type soft cable dcs system with cu core, xlpe insulation, pvc sheath, copper wire braided general & individual shielding |
ia-djyjp3vp3 |
intrinsic safety type cable for dsc system with cu core, xlpe insulation, pvc sheath, aluminum-plastic compound tape wrapped general & individual shielding |
ia-djyjp3vp3r |
intrinsic safety type soft cable for dsc system with cu core, xlpe insulation, pvc sheath, aluminum-plastic compound tape wrapped general & individual shielding |
ia-djyjp2vp2 |
intrinsic safety type cable for dsc system with cu core, xlpe insulation, pvc sheath, copper-plastic compound tape wrapped general & individual shielding |
ia-djyjp2vp2r |
intrinsic safety type soft cable for dsc system with cu core, xlpe insulation, pvc sheath, aluminum-plastic compound tape wrapped general & individual shielding |
wdz-ia-djypvp |
intrinsic safety type soft cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, copper wire braided general & individual shielding |
wdz-ia-djypvpr |
intrinsic safety type cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, copper wire braided general & individual shielding |
wdz-ia-djyp3vp3 |
intrinsic safety type cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, aluminum-plastic compound tape wrapped general & individual shielding |
wdz-ia-djyp3vp3r |
intrinsic safety type soft cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, aluminum-plastic compound tape wrapped general & individual shielding |
wdz-ia-djyp2vp2 |
intrinsic safety type cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, copper-plastic compound tape wrapped general & individual shielding |
wdz-ia-djyp2vp2r |
intrinsic safety type soft cable for dsc system with cu core, free halogen, low smoke, flame retardant, polyolefin insulation & sheath, copper-plastic compound tape wrapped general & individual shielding |
|
1、dc resistance of conductor at 20℃
nominal cross area section（mm2） |
pieces of conductor/ diameter of single piece mm |
dc resistance of conductor at 20℃（ω/km） |
|||
a |
b |
r |
a、b |
r |
|
0.5 |
1/0.8 |
7/0.3 |
16/0.2 |
≤36.0 |
≤39.0 |
0. 75 |
1/0.97 |
7/0.37 |
24/0.2 |
≤24.5 |
≤26.0 |
1.0 |
1/1.13 |
7/0.43 |
32/0.2 |
≤18.1 |
≤19.5 |
1.5 |
1/1.38 |
7/0.52 |
30/0.25 |
≤12.1 |
≤13.3 |
2.5 |
1/1.78 |
7/0.68 |
49/0.25 |
≤7.41 |
≤7.98 |
2、insulation resistance at 20℃
performance item |
pvc insulation |
pe、xlpe insulation |
insulation resistance at 20℃mω.km |
≥25 |
≥500 |
3、cable shall endure a.c. voltage test of 2000v under power frequency for 1min without puncture of insulation. and testing temperature is environment temperature.
4、working capacitance(1khz): core to core ≤90pf/m
5、distributing inductance（1khz）≤0.6μh/m
6、inductive voltage of electromagnetic interference（interference magnetic 400a/m）≤5mv
7、inductive voltage of electrostatic（static voltage 20kv）＜1v
8、penetration stress of radiant field(stress of interference field is120dbμv ; frequency of interference field is 200mhz）≤66dbμv
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