What are the supporting measures of optical fiber distribution box?

The supporting measures for an optical fiber distribution box include design, installation, protection, marking, grounding, and follow-up maintenance. The following is a detailed summary of these supporting measures:

First, design supporting measures

1. Setup of wiring area and user access point:

- Divide the distribution area reasonably according to the type of residential area and residential building (such as low rise, multi-story, mid rise, high rise and villa), and set up a user access point in each distribution area.

- The user access point should be set up in the telecommunication ODF frame or optical cable handover box and other level of optical fiber to ensure the effective allocation and management of optical fiber resources.

2. Selection of cabling cabinets/racks/boxes:

- Configure the module type and capacity according to the type of incoming cable and the number of fiber cores.

- The distribution modules on the switch office side and the user side can communicate with each other through jumper, improving the flexibility of optical fiber connection.

Second, installation of supporting measures

1. Installation position and environment:

- Cable distribution cabinets/racks should be installed in equipment rooms and telecommunications rooms, while wall hanging or wall recessed cable distribution boxes should be installed in public places such as the first floor or the first floor of the building unit, and do not be installed on the side walls of pedestrian stairs.

- The installation position of the distribution box should be convenient for construction and maintenance operation, and meet the seismic fortification level and mandatory standard requirements.

2. Installation details:

- When the cable is introduced into the equipment, there must be a reliable fixing and protection device, and the fixed cable metal tide barrier layer, armor layer and strengthening core must be reliably connected to the high-voltage protective grounding device.

- After the optical cable is peeled, protect and secure the optical fiber welding device with a plastic sleeve or spiral tube to ensure that the optical fiber is not damaged.

Third, the protection of supporting measures

1. Cable fixing and protection:

- The distribution box should be equipped with optical cable lead-in, fixing and protection devices to prevent optical cable and cable core damage.

- The bending radius of the cable should meet the requirements of the specification to avoid damage in circles, water immersion or foreign matter.

2. Connector protection:

- The splice of the optical fiber must be protected with a protective sleeve to prevent damage to the splice from affecting transmission performance.

Fourth, identification of supporting measures

1. Cable label:

- It is recommended that a room and location identification plate be marked on one end of the information box for each cable to facilitate future installation and maintenance.

2. Recording device:

- The wiring box should have a perfect identification and recording device for easy identification of the core serial number or transmission path sequence, and the recording device should be easy to modify and replace.

Fifth, grounding supporting measures

1. Grounding device:

- The cable distribution box should be grounded independently, and the grounding resistance should meet the requirements of the specification (for example, ≤4Ω or ≤1Ω).

- The grounding device should be reliably connected to the metal reinforcement core, metal tide barrier layer and armor layer in the optical cable to ensure good grounding effect.

Sixth, maintenance of supporting measures

1. Reserve redundancy:

- To facilitate installation and maintenance, reserve a certain length of redundant cables (for example, 300mm) when routing cables into the box of the information box.

2. Modular design:

- The cable distribution box should adopt a modular design to facilitate later expansion and maintenance operations. Different capacities and different manufacturers of welding disks should have universality and interchangeability.

In summary, the supporting measures of the optical fiber distribution box cover many aspects from design, installation, protection, marking, grounding to maintenance, aiming to ensure the stable operation and efficient management of the optical fiber network.