Optical Fiber Composite Overhead Ground Wire OPGW

OPGW is a dual functioning cable performing the duties of a ground wire and also providing a patch for the transmission of voice, video or data signals . The fibers are protected from environmental conditions (lightning, short circuit, loading) to ensure reliability and longevity. The cable is designed to be installed on transmission and distribution lines to carry voice, data and video communications, especially in lighting waveform monitoring system, an observation system for overhead test line, maintenance data information system, power line protection system, power line operation system, and unmanned substation monitoring

 

OPGW cable has two constructions:

 

• Central loose tube type

 

The fibers is placed loosely in a sealed and water resistant stainless steel tube filled with water blocking gel. This tube provides protection to the fiber during installation and operation under severe environmental conditions. Aluminium layer over the tube is optional. The stainless optical tube is located at the center of the cable protected by single or multiple layers of aluminium clad steel and aluminium annoy wires. The aluminium clad steel wires are shaped trapezoidally around the optical unit to provide compact construction. The metallic wires provide mechanical strength to withstand severe installation and operating conditions, while achieving conductivity to control temperature rise during short circuit conditions

This type can accommodate up to 48 fibers in a cable. Despite such a high fiber count in a single tube, each optical fiber is clearly distinguishable utilizing a fiber identification system consisting of coloring and the number of ring marks on it. This compact design features high mechanical strength and fault current rating within a smaller diameter. The smaller diameter also results in excellent sag tension performance

Multi loose tube type

 

The fibers is placed loosely in a sealed and water resistant stainless steel tube filled with water blocking gel. Two or three stainless steel optical tubes are helically stranded in the inner layer of a multiple-layer cable

 

The multi loose tube type is designed mostly for very high fiber count requirement over 48 with the maximum fiber count reaching 144. The multi loose tube type can meet the requirement of huge cross and large current capacity

Cable section (mm2)	Nominal Outer Diameter (mm/in)	Nominal Weight (kg/km)/(lb/kft)	Max working tension (kN)	Modulus of elasticity (kN/mm2)	Heat expansion coefficient (10-6/℃)	DC Resistance (Ω/km)	Short-circuit current capacity (kA2s)
35	8.1/0.318	250/167.79	45.2	162.0	13.0	2.433	8.9
50	9.6/0.378	343/230.20	63.0	162.0	13.0	1.743	16.5
70	11.4/0.448	487/326.85	89.3	162.0	13.0	1.237	3.04
90	12.5/0.492	368/246.98	58.2	94.1	17.3	0.473	72.7
105	13.5/0.531	428/287.25	67.9	94.1	17.3	0.403	98.8
130	15.0/0.590	527/353.69	83.8	94.1	17.3	0.329	149.9

Mechanical Properties

Minimum Bending Radius  Maximum Compressive Load  4000N for unarmoured cables  Under installation  20×OD  6000N for armoured cables  During operation  10×OD for unarmoured cables  Repeated Impact  4.4 N.m (J)  20×OD for armoured cables  Twist (Torsion)  180×10 times, 125×OD  Temperature Range  Cyclic Flexing  25 cycles for armoured cables  Operating Temperature Range  -40°C(-40°F) to +70°C(+158°F)  100 cycles for unarmoured cables  Storage Temperature Range  -50°C(-58°F) to +70°C(+158°F)  Crush Resistance  220N/cm(125lb/in)

1. Design wire and cable according to your real application

2. Optimized reel size for freight cost saving
3. Customized package to feature your brand
4. Short lead time to meet your urgent demand
5. Diversified delivery terms for your options
6. Quick response (24hours on line)
7. Professional knowledge for clear answer to your any question
8. Comprehensive technical documents to support your tender biding
9. One-year limited warranty for our wire and cable
10. Cable sample available
11. Specify the cable only according to the location
12. OEM is available
13. Abundant cables and wires for your option
14. Trade Assurance by Alibaba

 

 

Our Certifications:

 

 

Zhengzhou Hongda Cable Co., Ltd. was established in March of 1999. Our company owns registered capital of RMB6,000,000. Our company covers an area of 46,000 square meters, including 20,000 square meters of building area, and has more than 120 staff members and professional workers accounting for above one quarter. 

 

We mainly aim at managing cross-linking XLPE insulated power cables, PVC insulated power cables, plastic insulated control cables, insulated overhead cables, and stranded aluminum and ACSR. At present, the cables' biggest cross area is 500 square meters with a maximum electric power of 10KV, and the annual producing capacity is 20,000 kilometers.