(1) Verify that the project complies with the design specifications and ensure all technical documentation is complete. This includes equipment specifications, factory certificates, and any other relevant product information. Proper documentation is essential for confirming that the installation meets industry standards and regulatory requirements.
(2) Confirm that all safety measures are in line with current regulations and safety technology guidelines. For equipment where the electrical clearance falls below the required safety distance, additional protective measures must be implemented, such as enhanced insulation, fencing, or barriers. These steps are critical to ensuring a safe working environment for personnel involved in the operation and maintenance of the transformer.
(3) Conduct a thorough visual inspection of all electrical installations to assess the overall quality of the work. This includes checking for proper installation, correct wiring, and adherence to design and safety standards.
(4) Inspect concealed works such as cable trenches and the installation of grounding systems for cable terminations. These elements are often hidden after construction and must be verified to ensure they meet the necessary electrical and safety requirements.
(5) Check the interlocking mechanisms of all high-voltage switches. For customers using dual power supplies, it is also necessary to install interlocking devices to prevent accidental parallel operation, which could lead to dangerous conditions.
(6) Ensure that communication devices are properly installed. Substations at 35kV and above must have dedicated telephones, while smaller power customers with 10kV or lower supply should clearly identify the telephone number and responsible person for emergency communication.
(7) During the intermediate inspection, notify the customer about the accuracy calibration of load monitoring instruments and relay protection systems. Before connecting the equipment to the grid, conduct all required tests and inform the electricians about the training process. The customer should also be required to prepare safety tools, fire-fighting equipment, necessary procedures, management systems, and all required documentation and records to ensure full compliance and readiness for operation.
Shenzhen Kaixuanye Technology Co., Ltd. , https://www.icoilne.com