Loose Tube OPGW Aerial Fiber Optic Cable for Power Transmission
Line
Description:
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 strandard cable. The multiple loose tube
type is designed mostly for very high fiber count requirement over
48 with the maximum fiber count reaching 144. The multiple loose
tube type can meet the requirement of huge cross and large current
capacity.
Features:
- Cable diameter and weight approximate with another ground wire.
Less additional load to tower, high tensile strength.
- Excellent stainless steel tube stranding technology make the fibers
have good secondary excess length and allow the fibers free
movement in the tube. Which keeps the fiber stress-free while the
cable is subjected to longitudinal stress.
- Optical fibers are protected by stainless steel tubes.
- Excellent security, good bullet resist performance.
- ACSW, AAW and SST stranded design provide wide range combination of
electrical conductivity and mechanical tensile strength.
Characteristic:
- Stainless steel tubes filled with hydrophobic gel provide the
protection and support of the optical fibres.
- Accurate process control ensures good mechanical and temperature
performances.
- Larger diameter, larger fibre count.Stable structure and high
reliability.
- High tensile strength and large short time current capacity to
reach optimum balance of mechanical and electrical properties.
Application:
Optical fiber composite ground wire [OPGW] is suitable for
installation on new power lines with double function of ground wire
and communication. Especially for installation on normal voitage
and extra high voltage power lines. OPGW can replace conventional
ground wire of old power line with increasing fiber communication
function. They conduct short circuit current and provide lightning
resistance.
Typical design for Double Layer of OPGW:
Product Type Fiber Count Diameter Rate Tensile Strength Short Time
Current Capacity
(mm) (kN) (40-200℃ kA2.s)
OPGW-48B1.3-90- [112;45] 48 13.2 ≥112 ≥45
OPGW-48B1.3-90- [57;67] 48 13.2 ≥57 ≥67
OPGW-24B1.3-100-[118;50] 24 13.2 ≥118 ≥50
OPGW-24B1.3-100-[60;74] 24 13.2 ≥60 ≥74
OPGW-24B1.3-110-[133;63] 24 14 ≥133 ≥63
OPGW-24B1.3-110-[140;68] 24 14.3 ≥140 ≥68
OPGW-24B1.3-110-[67;95] 24 14.1 ≥67 ≥95
OPGW-36B1.3-120-[145;73] 36 14.6 ≥145 ≥73
OPGW-36B1.3-120-[95;98] 36 14.6 ≥95 ≥98
OPGW-36B1.3-120-[74;110] 36 14.6 ≥74 ≥110
OPGW-72B1.3-120-[147;76] 72 15.2 ≥147 ≥76
OPGW-72B1.3-120-2[96;101] 72 15.2 ≥96 ≥101
OPGW-72B1.3-120-[74;114] 72 15.2 ≥74 ≥114
OPGW-36B1.3-130-[155;85] 36 15.2 ≥155 ≥85
OPGW-36B1.3-130-[102;114] 36 15.2 ≥102 ≥114
OPGW-36B1.3-130-[79;137] 36 15.2 ≥79 ≥137
OPGW-36B1.3-140-[175;100] 36 16.1 ≥175 ≥100
OPGW-36B1.3-140-[115;140] 36 16.1 ≥115 ≥140
OPGW-36B1.3-145-[86;170] 36 16.1 ≥86 ≥170
OPGW-48B1.3-150-[182;123] 48 16.6 ≥182 ≥123
OPGW-48B1.3-150-[122;165] 48 16.6 ≥122 ≥165
OPGW-48B1.3-150-[95;195] 48 16.6 ≥95 ≥195
OPGW-72B1.3-150-[172;110] 72 16.6 ≥172 ≥110
OPGW-72B1.3-150-[116;147] 72 16.6 ≥116 ≥147
OPGW-48B1.3-170-[198;150] 48 17.6 ≥198 ≥150
OPGW-72B1.3-170-[199;156] 72 18.2 ≥199 ≥156
OPGW-48B1.3-180-[252;125] 48 18.2 ≥252 ≥125
OPGW-48B1.3-180-[211;175] 48 18.2 ≥211 ≥175
OPGW-48B1.3-180-[147;234] 48 18.2 ≥147 ≥234
OPGW-48B1.3-180-[113,262] 48 18.2 ≥113 ≥262
OPGW-48B1.3-235-[268;243.4] 48 20.3 ≥268 ≥243.4
Main mechanical & environmental performance test:
| Item | Test Method | Acceptance Condition |
Tensile Strength
IEC 794-1-2-E1 | - Load: Short term tension
- Length of cable: about 50m | - Fiber strain £ 0.15%
- Loss change £ 0.1 dB @1550 nm
- No fiber break and no sheath damage |
Crush Test
IEC 60794-1-2-E3 | - Load: Short term crush
- Load time: 1min | - Loss change £ 0.05dB@1550nm
- No fiber break and no sheath damage. |
Impact Test
IEC 60794-1-2-E4 | - Points of impact: 3
- Times of per point: 1
- Impact energy: 5J | - Loss change £ 0.1dB@1550nm
- No fiber break and no sheath damage |
Temperature Cycling Test
YD/T901-2001-4.4.4.1 | - Temperature step:
+20℃→-40℃→+70℃ →+20℃
- Time per each step: 12 hrs
- Number of cycle: 2 | - Loss change £ 0.05 dB/km@1550 nm
- No fiber break and no sheath damage. |
