For the owner, the installation of home decoration circuit is inseparable from the design of distribution cabinet. What is the installation specification of distribution cabinet? Let's take a look at professional distribution cabinet installation knowledge.

Code for installation of distribution cabinet

1. Check the appearance of the cabinet in detail, check whether it is deformed and whether the paint is peeling off. Ensure that the electrical equipment and components are complete without any damage and other defects. Check the number and installation position of the distribution box and pay attention to the grounding of soft copper braided wire.

2. The distribution box shall meet the basic operating conditions, the installation site has been painted, all embedded parts have been delivered from the warehouse, and the transportation road on the site has been unblocked.

3. The installation position shall be determined according to the site design, and the installation position of snapping line shall be determined according to the size of distribution box.

4. The foundation frame shall be prefabricated according to the construction drawings, the installation shall be flat and correct, the gasket shall be welded, the foundation frame shall be about 10mm higher than the plastering plane, and the anti-corrosion work shall be good.

5. Installation and construction requirements: the distribution cabinet shall be installed smoothly and placed on the foundation frame one by one. After the rows of counters are placed, the horizontal difference must be fine adjusted to meet the installation requirements of national standards. And firmly welded.

6：

a. The high voltage test can be installed only with the permission of the regional power supply bureau, and the standardized installation shall be carried out in accordance with the installation regulations of the local power supply department and the product technical requirements.

b. High voltage cabinet frame, voltage transformer, lightning arrester, bus and other switches shall be tested.

c. Adjust time relay, overcurrent relay, signal relay and mechanical interlock.

d. Use 500V insulation resistance measuring instrument for insulation test of each circuit.

7. After the installation is completed, it passes the inspection of the quality inspection department, and a test report is required.

8. In addition, the power supply department can send the power to the corresponding buildings after testing. After calibration, check whether the three-phase of the voltmeter is normal, whether the transformer has power, and whether the voltage of the voltmeter is normal. After power on, the power will be transmitted in the above order.

9. For final acceptance, if there is no abnormality after 24 hours of power transmission, the acceptance procedures can be handled, and the product certificate, instruction, test report and other materials can be submitted.

Selection skills of distribution cabinet

1. The selection of distribution cabinet shall be based on the nature and purpose of the load. It is necessary to determine whether it is a lighting distribution cabinet or a power distribution cabinet, or a metering box, socket box, etc.

2. According to the load current, voltage level and protection requirements of the control object, determine the main circuit and switchgear of each branch in the distribution cabinet, and protect the capacity of electrical appliances, trunking installation layout and voltage level.

3. The structural form of the distribution cabinet shall be selected according to the requirements of the use environment and use occasion, such as determining whether to select the open installation or concealed installation, as well as the requirements of appearance color, moisture-proof and fire prevention.

Cleaning and maintenance of distribution cabinet

1. Cut off the power supply before emptying the distribution box. If it is cleaned when it is powered on, it is easy to cause leakage, short circuit and so on. Therefore, check whether the circuit is disconnected before cleaning.

2. When cleaning the distribution box, prevent moisture from remaining in the distribution box. If moisture is found, wipe it dry with a dry cloth to ensure that the distribution box can be powered on when it is dry.

3. When cleaning the distribution cabinet, corrosive chemicals shall not be used, and the distribution cabinet shall not touch corrosive liquid or air. If the distribution cabinet encounters corrosive liquid or air, it is easy to cause its appearance corrosion and rust, affect its appearance and is not conducive to its maintenance.

The above is the sharing of distribution cabinet installation specifications. I hope it can help you.