(1) Verify that the project complies with the design specifications and that all necessary technical documentation is complete. This includes equipment specifications, factory certificates, and any other relevant documentation to ensure the project meets quality and safety standards.
(2) Ensure that all safety measures are in line with current regulations and safety technology guidelines. For equipment where the electrical clearance is below the required safety distance, implement additional protective measures such as enhanced insulation, fencing, or barriers to create a safe environment for maintenance and operational staff working on the transformer.
(3) Conduct a thorough visual inspection of all electrical installations to confirm that the workmanship and materials meet the required quality standards. This includes checking for proper installation, correct labeling, and absence of visible defects.
(4) Inspect the construction of concealed works, such as cable trenches and the installation of grounding systems for cable heads. These elements are critical for long-term performance and safety, so they must be checked thoroughly during the intermediate phase.
(5) Examine the interlocking mechanisms of all high-voltage switches. For customers with dual power supply systems, it is essential to install and verify interlocking devices to prevent back-feeding and ensure safe operation.
(6) Confirm the installation of communication devices. Substations at 35kV and above must have dedicated telephones, while smaller facilities with 10kV or lower power supplies should clearly identify the telephone number and responsible personnel for emergency contact.
(7) During the intermediate inspection, notify the customer to ensure that load monitoring instruments and relay protection systems are accurately calibrated and functioning properly. Before connecting the equipment to the grid, conduct all required tests and inform the electricians about the training procedures. Additionally, require the customer to have appropriate safety tools, fire-fighting equipment, and all necessary documentation, procedures, and records in place to ensure compliance and readiness for operation.
This comprehensive review ensures that the project not only meets technical requirements but also adheres to safety protocols and operational best practices, preparing it for smooth and secure commissioning.
Shenzhen Kaixuanye Technology Co., Ltd. , https://www.icoilne.com