Ribbon GYDTS Duct, Aerial Optical Cable

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The structure of GYDTS (outdoor optical cable used for telecommunication with metallic central strength, Steel-PE cementing sheathed, loose and layer-stranded tube style,) is covering the inner-fulfilled waterproof compound loose tube, which is made of high modulus plastic, with the single mode and multi-mode optical fiber. There is a steel wire in the middle of the optical cable core. For some optical cables with

certain number of core, the steel wire should be a steel stranded line covered with a tight pack of polyethylene (PE).

The compact and round shape cable core is a combination of the loose sleeve pipe (gasket for packing) and center-strengthened core, the gap in the cable core is filled with water retarding compound. It is cabled after the plastic-plated steel tapes has been covered of PE sheath.

For meeting to standard IEC60502
Longitude water proof
At many circumstances, the life of XLPE insulated cable is influenced by moisture, it should adopt a additional structure to proof water when outer sheath is broken, then water can not get in shield area. We can do by this way:
Use water proof powder in shielding area
Use water proof tape, and extrude bedding on the shielding layer
Use water proof in the inside and outside of metal tape screen

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Q:The living room to the bedroom cable does not work
Low voltage and wire aging has nothing to do with the cross-section of the wire, the cross-section is small, then the resistance of the wire is large, the pressure drop is large, the user's voltage will be reduced, but also with the wire and wire connection resistance, contact resistance Large, but also cause the user to drop the voltage, low voltage and the aging of the wire has an indirect relationship, the wire aging, that there is a certain history, and in recent years, rising living standards, household appliances also increased, with the time Increased, the power has increased, relative to the wire is concerned, is overwhelmed, so the line is often the place where the line voltage is very low
Q:What does the cable (YJV-5 * 6) mean?
ZR-YJV22-4 * 16 is ZR armored flame retardant power cable, YJV22 copper core PVC insulated steel tape armored PVC sheathed power cable, 4 * 16 is 4 core 16 (mm2) section.
Q:Cable WDZ-YJFE2 (4X185 + 1X95) what does it mean
According to the specification requirements: 8.10 cable bridge wiring 8.10.4 cable bridge horizontal laying, should be selected according to the load curve to support the best span, span should be 1.5-3m. Vertical laying, the fixed point spacing should not be 2m. Assuming that the height of the electrical shaft is 60 m and the fixed point spacing is 2 m, then the number of stents required is: (60/2) * 2 = 60 Assuming that the height of the electrical shaft is 60 m and the fixed point spacing is 1.5 m The number is: (60 / 1.5) * 2 = 80 mainly depends on your shaft height, and the bridge fixed point spacing, hope to help you, (* ^ __ ^ *)
Q:How long is the service life of the cable?
For corrosive environments, cable trays with suitable corrosion resistant coatings should be used
Q:Pvc threading tube packaging film how to do attractive, on the grade it? Thank you great god
If the upstairs said that the number of troughs in China. I am doing strong electricity. It is entirely possible.
Q:What is the installation specification for the cable tray bracket?
Be careful is right, but it is not necessary to be timid. Need to do so: . ask the district property, if the best road distribution map, read the drawings, you know where the cable, where not. . ask your home decoration of the electrician, he knows the most where your house where there is a wire decoration. . the general wall cabinet installed relatively high, as long as the bottom of the socket to avoid, generally all right.
Q:Paint trunking, galvanized trunking: that good? expensive? Their advantages and disadvantages?
Because the AC operation will produce eddy current, will make the steel pipe and cable heat burned. Single core refers to only one conductor in an insulating layer. When the voltage exceeds 35kV, most of the single-core cable, its core and metal shield layer relationship can be seen as a transformer primary winding coil and the relationship between the core. When the single-core cable core through the current when there will be magnetic lines linked to aluminum or metal shielding layer, so that both ends of the induced voltage. Power safety regulations: 35kV and below the voltage level of the cable are used at both ends of the grounding method, which is because most of these cables are three-core cable, in normal operation, the current flow through the three core sum of zero, in the aluminum There is no flux chain outside the package or metal shield, so that there is essentially no induced voltage at both ends of the aluminum or metal shield, so there is no induced current flowing through the aluminum or metal shield after grounding at both ends. But when the voltage exceeds 35kV, most of the single-core cable, its core and metal shield layer relationship can be seen as a transformer primary winding coil and the relationship between the core. When the single-core cable core through the current when there will be magnetic lines linked to aluminum or metal shielding layer, so that both ends of the induced voltage.
Q:Dell laptop plug in the power supply usb can not be used, how is it?
KVV is the control cable, generally do industrial control; and RVS is twisted pair, generally used for weak system, to eliminate the interference requirements of the occasion, such as two-wire bus system, specifically, the electrical fire bus more Such as RS485 bus and so on.
Q:Power cable YJV22-8.7 / 15kv-3 * 300 what meaning
(Including the insulation layer) of the total area should not be greater than 40% of the internal cross-section; . the tube wire is not allowed to have joints and twist the phenomenon; . the same loop of the phase of the wire, Regardless of the number of roots should be penetrated into a tube, and different circuits and different voltage lines are not allowed to wear a tube, AC and DC line wires shall not wear a tube, a phase line are not allowed to penetrate alone Steel Pipe. If the requirements are not strict, the power cable, the control cable can wear the same tube; but the signal line will be discretionary, although the signal line is shielded cable, but in order to maximize the signal transmission quality, and other signal lines are generally layout. UPVC plastic pipe with excellent insulation, acid, corrosion resistance, many chemical plants used as infusion piping. The other is also used for sinking engineering, medicine piping works, mineral salt water piping works, electrical piping works. Also widely used as a telecommunications cable. So it can be UPVC pipe to do electrical piping. As for the galvanized steel pipe is not necessary. If the power cable and signal cable at the same time with UPVC pipe laying, were classified separately perforated, the best interval between the two 20cm to prevent interference, with galvanized steel pipe pipe is not necessary so care.
Q:3 (WDZBN-YJV-4x240 + 1x120) cable how to interpret
Should be such a model it WDZB-YJV0.6 / 1kV4x240 + 1x120 power cable halogen-free low smoke flame retardant B grade refractory cross-linked polyethylene insulation - polyethylene jacket 0.6 / 1kV power cable, 4 core 240mm + 1 core 120mm copper Core cable.

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