ADSS
Understanding ADSS (All-Dielectric Self-Supporting) Cable
If Verizon wants to run a massive, 100-mile long fiber-optic internet trunk across a mountain range, digging a trench is too expensive. The easiest solution is to hang the fiber optic cable from the massive high-voltage electrical towers that already cross the mountains. But if you hang a standard metal-reinforced cable near 500,000 Volts of electricity, the cable will explode. You must use ADSS.
The 100% Metal-Free Cable
ADSS stands for All-Dielectric Self-Supporting.
- All-Dielectric: It contains absolutely zero metal. It has no steel armor and no copper grounding wire. Because glass and plastic do not conduct electricity, the ADSS cable is completely invisible to the massive, deadly 500,000-Volt magnetic field surrounding the power lines.
- Self-Supporting: Standard fiber cables are physically weak; they must be zip-tied to a strong steel wire to hang from a pole. ADSS must hang by itself. To survive the massive physical weight of ice storms and hurricane-force winds spanning a 1,000-foot gap between towers, the cable is heavily packed with thick layers of Kevlar (the same material used in bulletproof vests).
The Utility Company Advantage
ADSS allows massive electrical utility companies to secretly become telecom giants. Because they already own the electrical towers, they can easily string massive ADSS fiber cables across their entire power grid without digging a single trench or asking for permission. They use a few fibers to remotely monitor the power grid, and lease the remaining 100 glass fibers to cell phone companies for millions of dollars a year to provide massive 5G backhaul.
Key Equations
ADSS (All-Dielectric Self-Supporting) cable is a highly specialized, heavy-duty fiber optic transmission medium utilized extensively by utility companies and telecommunication carriers to deploy high-speed optical...
Key specifications:
100 % | 000 V | 0 dB | 1 mW | 30 dB
Power: P(dBm) = 10log(PmW), 0dBm = 1mW
Comparison
| Aspect | ADSS Spec | Typical Range | Impact | Design Note |
|---|---|---|---|---|
| Primary function | ADSS solves this by being 100% dielectri... | Application-dep. | Critical | Verify in sim |
| Operating range | The microscopic glass fibers are encased... | Application-dep. | Critical | Verify in sim |
| Performance | Understanding ADSS (All-Dielectric Self-... | Application-dep. | Critical | Verify in sim |
| Integration | The easiest solution is to hang the fibe... | Application-dep. | Critical | Verify in sim |
| Trade-off | But if you hang a standard metal-reinfor... | Application-dep. | Critical | Verify in sim |
Frequently Asked Questions
What is the 'Dry Band Arcing' problem?
It is the deadliest threat to ADSS. While the cable has no metal, if the outside plastic jacket gets covered in pollution and dirty rainwater, the water acts as a conductor. The massive 500kV electrical field from the power lines causes microscopic, high-voltage electrical arcs (sparks) to constantly travel across the wet surface of the cable. Over years, this arcing literally burns through the plastic jacket, exposing and snapping the fragile glass fibers inside.
How is ADSS different from OPGW?
OPGW (Optical Ground Wire) is the other major utility cable. OPGW is a massive, heavy steel cable designed to act as the primary lightning rod for the top of the electrical tower. The glass fibers are secretly hidden inside the steel. OPGW is incredibly strong and bulletproof, but extremely expensive and dangerous to install because it requires turning off the massive power lines. ADSS is entirely plastic, allowing workers to safely install it while the 500,000-Volt power lines are still turned on and completely live.
Can animals destroy ADSS cable?
Yes, catastrophically. Because ADSS has no steel armor, it is physically vulnerable to the teeth of squirrels and birds (particularly woodpeckers). In heavily forested areas, utility companies are forced to use highly specialized ADSS jackets infused with bitter chemical deterrents, or resort to significantly heavier, steel-armored cables (which cannot be placed on high-voltage towers) to prevent rodents from physically chewing through the internet backbone.