Dome Type IP68 Fiber Optic Cable Joint Closure 48/96/144 Cores
Fiber Optic Cable Joint Closure (often called a splice closure or
splice case) is a protective enclosure used to house and protect
the spliced connection points of fiber optic cables. Its primary
function is to provide a safe, sealed, and organized environment
where two or more fiber optic cables can be joined, and the
delicate fusion splices or mechanical splices can be stored and
managed.
Specification:
| Fiber Capacity | 24/48/72/96/144/288F |
| Cable Entry/Exit Ports | 1 in 3 out/ 1 in 4 out/ 1 in 6 out/ 1 in 8 out/ 2 in 4 out |
| IP Rating | IP65,IP67,IP68 |
| Splice Tray Capacity | 2/4/6 |
| Material | PE, PP, ABS, Metal |
Components:
1.1 Housing/Shell: The main body, usually made of durable plastic
(like PE, PP) or metal, designed to be mechanically robust.
1.2 Sealing System: Critical for water and dust-tightness. Common
methods include: Heat Shrink Seals: Used with cables that have
heat-shrinkable sleeves.
1.3 Mechanical Seals/Glands: Use clamps, rubber grommets, and
sealing tapes to create a seal around the cable entries.
1.4 Gel Seals: Often used with re-enterable closures.
1.5 Cable Ports/Entries: Openings where the incoming and outgoing
cables enter the closure. They are part of the sealing system.
1.6 Splice Tray (Organizer): The core internal component. It's a
plastic tray that holds and protects the individual fusion splices
(usually in silicone or gel sleeves) and manages the fiber routing.
Multiple trays can often be stacked.
1.7 Mounting Bracket/Strand Hook: Allows the closure to be mounted
on a pole, strand, tower, or placed in a manhole or handhole.
Installation:
2.1 Aerial: Mounted on a support strand between poles.
2.2 Underground/Burial: Placed in manholes, handholes, or directly
buried.
2.3 Pole-Mounted: Attached directly to a utility pole.
2.4 Indoor: Used in controlled environments like data centers (less
demanding sealing requirements).
Noted:
3.1 Cable Count and Fiber Count: Must accommodate the number of
cables and fibers to be spliced.
3.2 Re-enterability: Whether the closure needs to be reopened
multiple times for network reconfiguration (common in access
networks).
3.3 Sealing Method: Must be compatible with the cable types and
installation method.
3.4 Environmental Rating: Look for standards like IP68 (dust-tight
and submersible) or GR-312 (Telcordia standard for outdoor
closures).
3.5 Mounting Type: Must suit the physical location (pole, strand,
etc.).
