Blog
- Building A, Republic International Business Plaza, No. 3699 Gonghexin Road, Jing'an District, Shanghai
- +86-21-59175887
- market@soctfiber.com
- 86-17321363317
- 86-13341796231
OPGW-48B1-100 Optical Fiber Composite Ground Wire — RTS Table, Short-Circuit Rating, Hardware Kit & Quote
Utilities upgrading transmission corridors need one conductor that shields the line and carries bandwidth for protection relays, SCADA and backbone traffic. OPGW-48B1-100 integrates a 48-fiber optical unit inside a metallic ground wire with a ~100 mm² supporting cross-section class—so you replace the earth wire and gain a carrier-grade fiber route in one outage.

What OPGW-48B1-100 Delivers
- Two-in-one value: lightning shielding + fiber backbone (48F for teleprotection, SCADA, OT/IT and spare dark fiber).
- Mechanical robustness: aluminum-clad steel (ACS) strands and a sealed optical tube for aeolian vibration resistance and thermal short-circuit events.
- Standards-ready: designed to meet typical IEC 60794-4/IEEE 1138 requirements referenced in power tenders.
- Project-friendly logistics: long reel lengths, drum marking, hardware bundle quotes, and a production plan aligned to your outage window.
Quick Specs Snapshot (48B1-100 class)
| Parameter | Typical Scope (project-specific) |
|---|---|
| Fiber count | 48 cores (G.652D by default; G.655 optional) |
| Construction | Central stainless/aluminum tube (gel-filled) + ACS outer strands |
| Supporting cross-section | ~100 mm² class (variants available for higher fault current) |
| Key tables you’ll receive | RTS (rated tensile strength), OD, weight/km, DC resistance, 1 s short-circuit current, elastic modulus |
| Accessories | Suspension sets, dead-end clamps, spiral armor rods, vibration dampers, down-lead clamps, splice/joint boxes |
Need exact OD/RTS/weight? Send your span range, wind/ice zone, 1 s I²t requirement, and target reel length—we’ll issue a matched datasheet.
OPGW vs ADSS — Which Fits Your Corridor?
| Scenario | Choose OPGW | Choose ADSS |
|---|---|---|
| Replacing or adding the overhead ground wire | ✅ Ground-wire function + fiber in one pull | — |
| High short-circuit current requirement | ✅ Metallic strand path handles thermal stress | — |
| Live-line constraints prevent ground-wire work | — | ✅ Self-supporting dielectric cable off the pole line |
| Routing near strong EMI with full dielectric path | — | ✅ Dielectric path avoids induced currents |
| Need tower-top shielding + fiber | ✅ | — |
Most utilities deploy both across a network: OPGW for transmission backbones, ADSS for distribution or mixed rights-of-way—our team can package the interconnection hardware so OPGW fibers tie cleanly into your FTTx/OT nodes.

Hardware Kit (Bundle Pricing Available)
- Suspension set (span-class matched)
- Dead-end set with armor rods
- Stockbridge/spiral vibration dampers
- Down-lead clamps (tower-top to splice box)
- Splice/joint box + trays and mounting hardware
- Grounding & fittings per substation standard
Ordering the conductor + full fittings kit from one supplier reduces field surprises and shortens FAT/handover.
Commercials: Price, MOQ & Lead Time
- Price drivers: metal content and lay, supporting cross-section (~100 mm²), fiber type, 1 s short-circuit current, total kilometers, and hardware scope.
- MOQ: quoted by total km and design family (we can combine drums for multi-substation projects).
- Lead time: planned to your outage window; we lock production and inspection slots once your datasheet and hardware BOM are confirmed.
Engineering Checklist (copy-paste into your RFQ)
Line & environment
- Voltage level (110/132/220/230/400 kV), route length, span range & ruling span
- Wind/ice zone, isokeraunic level, temperature range
Electrical & optical
- 1 s short-circuit current requirement (kA)
- Fiber plan: 48F allocation (protection/SCADA/OT/dark fiber), G.652D/G.655 choice, tube excess length preference
Mechanical
- Target RTS/OD/weight (if tender-fixed)
- Vibration control plan (damper type & spacing)
- Reel length (e.g., 2–5 km per drum), max drum mass
Logistics
- Total kilometers & delivery milestones
- INCOTERM (EXW/FOB/CIF), destination port/site
- QA pack: type/routine tests, certificates, inspection
Send this info and we’ll return a line-matched design sheet, sag-tension & RTS table, and a firm price per km with the full hardware BOM.
FAQ (Procurement & Engineering)
Q: Can you match our tender’s RTS and 1 s current?
A: Yes—48B1-100 is a class reference. We tune strand counts and tube design to hit your RTS and fault-current target while keeping OD/weight within your traveler limits.
Q: What reel lengths do you supply?
A: Standard 2–5 km per drum; we’ll align to tower spacing and stringing plan to cut splices and speed pulls.
Q: What test reports are included?
A: Type/routine tests per the quoted standard, optical attenuation/PMD, DC resistance, RTS verification, and hardware fit checks.
Q: Can you bundle fittings and substation terminations?
A: Yes—order as a single package (suspensions, dead-ends, dampers, down-lead clamps, splice boxes) for simpler site acceptance and fewer vendors to coordinate.
Example Use Cases
- 110–220 kV rebuilds replacing a worn static wire—gain fiber without adding a separate line.
- Substation-to-substation backbones where dark strands are reserved for future telemetry.
- Rural OT networks needing long spans and robust lightning shielding.
Strong Call to Action
Get a project-matched OPGW-48B1-100 proposal today.
Send your span data + 1 s current + reel length preference, and we’ll reply with:
- A matched datasheet (OD, weight/km, DC resistance, RTS)
- A complete hardware BOM with bundle pricing
- A firm price per km and a lead-time aligned to your outage window
Your corridor gets the shielding it needs—and a reliable fiber backbone—in one planned outage.

