03

2021-09

The role of cable branching boxes in power systems.

With the booming development of the real estate industry, the transformation of the State Grid is changing rapidly, and the role of cable branch boxes is becoming increasingly important. There are more and more manufacturers of cable branch boxes in the market, and for many businesses looking to purchase wired branch boxes, how to choose has become a headache. Today, I will tell you what to pay attention to when purchasing cable branch boxes.

2021-09-03

The role of cable branching boxes in power systems.

02

2021-09

Comparison of different structures of box-type substations

The box-type substations are divided into two typical styles: European box-type substations and American box-type substations, based on their structure and composition.

2021-09-02

Comparison of different structures of box-type substations

01

2021-09

What to do if the box-type substation is flooded?

Step three: After the box-type substation or distribution room has been drained, the equipment should not be rushed to resume operation. The main power switch should be dried, and sufficient ventilation, drying, and dehumidification measures should be taken.

2021-09-01

What to do if the box-type substation is flooded?

31

2021-08

Quality assurance measures for box-type substations

Using box-type substations, measures are taken to ensure equipment quality, thereby better guaranteeing the use of the equipment, improving its efficiency, and extending its service life.

2021-08-31

Quality assurance measures for box-type substations

30

2021-08

Inspection of box-type substations before use

After the installation or maintenance of a box-type substation, certain inspections and tests should be conducted before it is put into operation. This includes checking whether the interior of the substation is clean, whether the operating mechanisms are flexible, whether the main electrical appliances are flexible and reliable, whether the auxiliary contacts of the electrical appliances are reliable and accurate, whether the instruments and relays operate accurately, whether the ratio of the modified electric meter to the transformer is correct, whether the wiring polarity is correct, whether all electrical installation nuts are tightened, whether the installation is firm and reliable, whether the bus connections are good, and whether the clamp parts are installed securely. Additionally, it should be verified that the supporting insulators and electrical setting values meet requirements, that the specifications of the fuse cores are correct, and that the contacts of both the main circuit and auxiliary circuit comply with the requirements of the electrical schematic. The internal protection grounding system of the product should be less than 0.01 ohms, and each part should undergo a withstand voltage test according to its corresponding voltage level.

2021-08-30

Inspection of box-type substations before use

27

2021-08

Selection of internal components for box-type substations

Technical key points for component selection in box-type substations: selection of high-voltage side receiving equipment, transformer selection, low-voltage distribution component selection, etc.

2021-08-27

Selection of internal components for box-type substations
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