How to conduct electrical acceptance？

Electrical engineering is a vital part of building construction, and its construction quality directly affects the safe operation and use function of the building. As an important link after the completion of electrical engineering, electrical acceptance is a necessary procedure to ensure the engineering quality meets the design requirements and relevant specifications. This paper will elaborate on the process, content and matters needing attention of electrical acceptance.

First, the basic process of electrical acceptance

1. The construction unit self-inspection.
Before the formal acceptance, the construction unit needs to conduct a comprehensive self-inspection of the electrical system to ensure that the functions of each system are normal, the lines are connected correctly, and the equipment runs stably, and a complete self-inspection report is formed.

2. Pre-acceptance of supervision unit
After receiving the self-inspection report, the supervision unit shall organize relevant personnel to pre-check the electrical engineering, check whether the construction conforms to the design drawings and construction specifications, and ask for rectification in time when problems are found.

3. The construction unit shall organize formal acceptance.
On the basis of pre-acceptance, the construction unit shall organize an acceptance team composed of design, construction, supervision and related professionals to conduct formal acceptance, and may invite quality supervision institutions to participate when necessary.

Second, the main contents of electrical acceptance

1. Power distribution system inspection
Including transformers, power distribution cabinets, cable lines, grounding systems, etc. Focus on checking whether its installation position meets the design requirements, whether the wiring is firm and whether the logo is clear and complete.

2. Lighting system test
Conduct power-on tests on lamps, switches, sockets, etc. to check whether they can work normally and whether there are problems such as electric leakage and short circuit.

3. Power system acceptance
Including the installation and debugging of motor, control box, frequency converter and other equipment, it is necessary to test whether its starting and running state is stable and whether its protection function is complete.

4. Lightning protection and grounding system detection
Check the installation of lightning protection device and whether the grounding resistance value meets the specification requirements to ensure the safety and reliability of the system.

5. Electrical safety and fire prevention measures
Check whether the laying of electrical lines meets the requirements of fire partition, whether there is random connection, and whether effective fire isolation measures are taken around electrical equipment.

6. Information review
Complete construction drawings, equipment specifications, debugging records, test reports, concealed works acceptance sheets and other materials shall be provided during acceptance to ensure that the engineering data are complete, true and traceable.

Iii. Matters needing attention in electrical acceptance

-Ensure the safety of personnel: During the acceptance, strictly abide by the electric power safety operation regulations and wear necessary protective equipment.
-Use qualified testing equipment: measuring instruments and tools must be calibrated to ensure the accuracy of data.
-Pay attention to the closed loop of rectification: for the problems found in the acceptance, the person responsible for rectification should be clearly defined and rechecked to ensure that the problems are completely solved.
-Complete records: During the acceptance process, each inspection result shall be recorded in detail, and a written report shall be formed as the basis for project delivery.

In a word, electrical acceptance is a systematic and professional work, which is related to the safe and reliable operation of the whole building electrical system. Only by strictly following the standard process and taking every acceptance link seriously can we ensure the quality of the project to meet the standard and ensure the safety of users' lives and property.