Related introduction of cable branch box

1. The structure, characteristics and performance of the cable branch box

Fully airtight, full protection, anti-fouling, anti-corrosion, meet outdoor all-weather operating conditions, and can adapt to different working environments.

The cable branch box is a floor-mounted box, with a small volume and a small footprint. If some covers an area of ??0.65m2, the area with an SF6 switch is only 1.45m2; it has a beautiful appearance and will not affect the appearance of the town. damage.

The conductor connector in the branch box adopts the crimping method, which is convenient for installation and flexible for incoming and outgoing lines. There can be up to 6-8 branch incoming and outgoing lines in use, which can realize multi-channel power transmission in the district, in order to go deep into the load center, shorten the power supply radius, and reduce the line Loss provides technical guarantee. At the same time, the cable branch box can be equipped with power indicator, fault indicator, silicone rubber fully insulated plug-in lightning arrester, mechanical program-controlled lock, grounding switch, etc., to ensure the safety of operation, maintenance and management.

Cooperating with the cable network ring network type power supply, SF6 and other ring network load switches can be configured to meet the requirements of local power outage maintenance without affecting the operation of the main network, realize regional power outage maintenance, and reduce the scope of power outages. At the same time, the ring network cable branch box can realize ring network power supply, laying the foundation for future 10kV line network structure adjustment.

2. Installation and precautions of cable branch box

At present, there are many varieties of 10kV outdoor cable branch boxes in my country. Therefore, the installation and construction of 10kV cable branch boxes has become very important. Whether the operation method of the installation and connection process of the cable branch box and the cable joint is correct, whether the installation process of the cable head is familiar, the sequence of the assembly of the internal components of the cable branch box and the cable joint parts, whether the operation is carried out in accordance with the installation specifications provided by the manufacturer, etc. It will directly affect the service life and normal operation of the cable branch box.

Before running the cable branch box, you must check whether the ground wire of each branch cable is tightly connected to the ground terminal of the box. At the same time, the box shell must be directly connected to the ground grid or have an obvious grounding point.

After the cable branch box is installed, the cable components must be tested together in accordance with the relevant test standards and conditions.

At present, the cable branch box has been comprehensively promoted and used not only in the county but also in some towns and towns. Its good power supply performance has been unanimously praised by the society and the majority of electricity customers. It is believed that in the near future, the cable branch box will be used in more occasions and gradually show its superiority.