ADSS — All-Dielectric Self-Supporting Optical Cable

A lightweight, non-metallic fiber optic cable engineered for reliable aerial deployment without the need for a messenger wire.

ADSS optical cable adopts a loose-tube stranded structure, in which 250 μm optical fibers are inserted into loose tubes made of high-modulus materials, and the loose tubes are filled with water-blocking compounds. The loose tubes (together with filling ropes) are stranded around a non-metallic central strength member (FRP) to form a compact cable core, and the gaps in the cable core are filled with water-blocking ointment. A polyethylene (PE) inner sheath is extruded over the cable core, then aramid fibers for reinforcement are stranded, and finally a polyethylene (PE) outer sheath or an anti-tracking (AT) outer sheath is extruded.

Key features

Can be installed without power interruption
Adopts AT sheath with excellent anti-tracking performance
Light weight and small cable diameter, which reduces the impact of ice and wind, as well as the load on towers and supports
Large span, with the maximum span exceeding 1000 meters
Possesses excellent tensile properties and temperature characteristics
Expected service life is more than 30 years

Construction

Loose tube250 μm optical fibers in high-modulus loose tubes, filled with water-blocking compound.Central strength memberNon-metallic FRP rod — the loose tubes strand around it to form a compact, fully dielectric core.Inner sheathPolyethylene (PE), extruded over the cable core.ReinforcementAramid yarn, stranded over the inner sheath for tensile strength.Outer sheathPolyethylene (PE) or anti-tracking (AT) sheath.

Optical Fiber Specification

Fiber typeG652D — full color coding to national standard.Mode field diameter9.2 ± 0.4 μmAttenuation (fiber matching)≤0.345 dB/km (1310nm) · ≤0.205 dB/km (1550nm)Attenuation (factory outlet)≤0.350 dB/km (1310nm) · ≤0.210 dB/km (1550nm)Cut-off wavelength (CCW)≤1260nmTemperature characteristic (TC)≤0.05 (−40°C to +70°C)

Typical applications

ScenariosTransmission lines, distribution networks, renewable energy projects, and utility communication systems.

Structural Parameters

Ref. Outer Diameter (mm)	Ref. Weight — PE Sheath (kg/km)	Ref. Weight — AT Sheath (kg/km)	Rec. Daily Max. Working Tension (kN)	Max. Allowable Working Tension (kN)	Break Strength (kN)	Strength Member CSA (mm²)	Modulus of Elasticity (kN/mm²)	Heat Expansion Coefficient (×10⁻⁶/K)	Suitable Span A (m)	Suitable Span B (m)	Suitable Span C (m)	Suitable Span D (m)
12.5	125	136	1.5	4	10	4.6	7.6	1.8	160	100	140	100
13.0	132	142	2.25	6	15	7.6	8.3	1.5	230	150	200	150
13.3	137	148	3.0	8	20	10.35	9.45	1.3	300	200	290	200
13.6	145	156	3.6	10	24	13.8	10.8	1.2	370	250	350	250
13.8	147	159	4.5	12	30	14.3	11.8	1.0	420	280	400	280
14.5	164	177	5.4	15	36	18.4	13.6	0.9	480	320	460	320
14.9	171	185	6.75	18	45	22.0	16.4	0.6	570	380	550	380
15.1	179	193	7.95	22	53	26.4	18.0	0.3	670	460	650	460
15.5	190	204	9.0	26	60	32.2	19.1	0.1	750	530	750	510
15.6	194	208	10.5	28	70	33.0	19.6	0.1	800	560	800	560
16.3	211	226	12.75	34	85	40.0	20.1	0.1	880	650	880	650
16.8	226	242	15.45	41	103	48.0	24.0	−0.4	1000	750	1000	760
17.2	236	253	16.2	45	108	51.0	25.1	−0.5	1100	800	1100	830
17.99	249	266	18.0	50	120	58.8	26.1	−0.8	1180	880	1180	900

Selected sizes from the datasheet — full range available on request. Suitable-span columns A–D follow NESC loading-district conventions.

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