Down Lead Clamp for OPGW

The Down Lead Clamp for OPGW is used for securing and guiding the OPGW cable from the tower top to the ground or equipment. For ADSS cables, insulating lead-down clamps are available separately to prevent electrochemical corrosion.

Secure Mounting

It firmly secures ADSS or OPGW fiber optic cables to the tower or pole-whether routing the cable from the tower top to a splice box, leading it down into underground conduits, cable trenches, or direct-burial systems, or routing it directly into an equipment room.

Abrasion Prevention

During windy conditions, fiber optic cables tend to sway. If not properly secured, the cable will rub back and forth against the steel tower structure or angle steel members; this friction can abrade the cable's outer sheath, potentially leading to signal failure.

This clamp functions by firmly gripping the fiber optic cable, preventing it from moving erratically and thereby ensuring its physical integrity and safety.

Typically, these clamps are installed at key locations along the transmission line-such as at starting towers, terminal towers, and splicing towers-with a spacing of approximately 1.5 to 2 meters between each clamp.

The choice of material varies depending on the specific project requirements and environmental conditions:

Cast Iron

Simple in structure and corrosion-resistant, though heavy; suitable for applications where weight is not a critical constraint.

Aluminum Alloy

Lightweight, high-strength, highly conductive, and corrosion-resistant; ideal for installation at high elevations on towers, facilitating easier handling.

Steel

High-strength, rigid, and extremely durable; suitable for connecting to heavy-duty equipment or for applications involving high mechanical loads.

Hot-Dip Galvanized Iron/Steel

Corrosion-resistant and high-strength; the most common choice for outdoor environments.

In actual engineering projects, hot-dip galvanized materials and aluminum alloys are the most frequently utilized options.

We offer project-specific customization services; simply provide the optical cable's outer diameter and the tower member dimensions, and we will configure the appropriate solution. If you require samples or a quotation for specific models, please contact us directly; we guarantee a response within 24 hours.

There are two primary installation scenarios:

For Concrete Poles

Uses a 304 stainless steel banding strap (hoop) to secure the clamp firmly to the pole.

For Steel Towers

Uses hot-dip galvanized U-bolts to clamp the assembly directly onto the tower's angle steel members.

The installation process consists of just three simple steps:

• Secure the clamp assembly to the tower or pole.
• Place the fiber optic cable into the parallel groove within the clamp.
• Adjust the position of the cable as needed, then tighten the inner and outer nuts.

Done. No drilling or welding is required.

Different types of optical cables and tower structures require specific types of down-lead clamps:

• Dedicated Down Lead Clamp for OPGW (Suitable for metal-composite ground wires)
• Dedicated Down Lead Clamp for ADSS (Insulated versions available)

Selection should be based on the optical cable diameter, tower member specifications, and whether insulation is required.

Philippine Company – ADSS Fiber Optic Cable Securing in Typhoon-Prone Regions

Problem

The local area experiences frequent typhoons (with wind speeds exceeding 120 km/h). Previously, plastic cable ties were used to secure the fiber optic cables; however, these would loosen and detach during typhoons, causing the cables to chafe against the tower structure. Consequently, repairs were required every six months.

Solution

We replaced the existing fasteners with our hot-dip galvanized down-lead clamps. These were installed at intervals of 1.5 meters, with reinforced versions utilized at critical points.

Result

After enduring two typhoon seasons-including one Category 17 typhoon-the fiber optic cables remained completely intact and undamaged. The maintenance frequency was successfully reduced from once every six months to once every two years.

Client's Quote: "In the past, we had to climb the towers to perform repairs every time a typhoon passed through; now, that is no longer necessary, saving us a significant amount of money."

Q: I received the Down Lead Clamp for OPGW but realized the model was incorrect. Can I exchange it?
A: Yes. Please contact us within 7 days of receipt. If you take photos of the product label and packaging, and we confirm that we shipped the wrong item or an incomplete order, we will arrange for a return, exchange, or reshipment at our own expense. If the customer selected the wrong model by mistake, an exchange is still possible, but the round-trip shipping costs must be covered by the customer.

Q: The fiber optic cable still wobbles a bit after installation. Is this normal?
A: We recommend installing a clamp every 1.5 to 2 meters; under normal circumstances, the fiber optic cable should remain essentially motionless.
If you notice significant wobbling, please check two things first:
Are the clamps tightened securely? (The internal nuts must be locked down tight.)
Is the installation spacing between clamps too wide?
If you are still unsure, please record a short video and send it to us; our engineers will review it for you free of charge.

Q: Can you provide installation guidance?
A: Yes, we can.
We offer three methods:
Installation instructions (featuring both text and diagrams) included with your shipment.
An installation video sent directly to you.
For bulk orders, we can arrange for live online guidance (via Email or WhatsApp).

Hot Tags: Down Lead Clamp for OPGW, China Down Lead Clamp for OPGW manufacturers, factory, flexible downline clamp, cabinet mounted downline clamp, glass downline clamp, conductive downline clamp, brass downline clamp, sturdy downline clamp