HSE DOCUMENTS-METHOD STATEMENT FOR INSTALLATION OF LOW VOLTAGE PANELS (LVP’s)

 

This methodology document written and uploaded by HSE Documents highlights the process of installing low-voltage panels, providing valuable insights for both beginners and experienced professionals. Here we will describe the fundamental principles, step-by-step procedures, and best practices that reinforce the successful deployment of these essential components in electrical systems.

The blog post visitors can expect to achieve a deep understanding of the elements involved, including circuit breakers, switches, meters, and protective devices. These documents will also cover safety considerations, compliance with regulations, and how to troubleshoot common issues that may arise during installation.

1.0. Scope

This methodology and safety procedural document highlights the method of installation of Low Voltage (L.V) main Panels (LVPs) as per the Specification.

2.0. Material

2.1. All materials shall be as per approved material submittals, shop drawings, and single-line diagrams.

2.1.1. L.V. Main Panels.

2.1.2. Cable glands and lugs.

2.1.3. Identification labels and tags.

3.0. Applicable Location

3.1. L.V. rooms/write as per your scope of work.

4.0. Method

4.1. Storage

4.1.1. LVPs shall be inspected upon receipt at the site for damages and compliance with the approved submittals and Single-line Diagram.

4.1.2. Upon completion of receiving inspection, the LVPs shall be positioned at the respective substation locations with suitable crane arrangements.

4.1.3. LVPs found with transportation damages shall be recorded and notified to the concerned party for further action.

4.1.4. LVPs shall be covered with polythene sheets to protect from dust and moisture.

4.2. Installation

4.2.1. Ensure approved documents like shop drawing, SLD, electrical room layout and load schedules are available with the installation team.

4.2.2. Check the label/marking to ensure that it is the right panel and check the position according to the shop drawing.

4.2.3. Check the breaker rating and the provision for cable/bus bar termination.

4.2.4. Set the breaker's current rating as per the approved shop drawing.

4.2.5. Terminate the incoming and outgoing cable as per single line diagram using proper tools.

4.2.6. Megger the panels after connecting the compartments.

4.2.7. Megger the cables before terminating.

4.2.8. Megger the panel after termination, when Incoming Circuit (I/C) open and the the outgoing Circuit (O/G) is closed.

4.2.9. Check the working of motorized breakers.

4.2.10. Clean the termination and breaker cubicles with a vacuum cleaner and hand brush to clean the dust and small metal pieces that fell during the cable cutting and terminating process.

4.2.11. Ensure the busbars and interconnecting terminals are free from dust and damage.

4.2.12. Provide identification for all the cable terminations as per specification requirements and SLD.

4.2.13. Dress the cables neatly with cable ties/cable cleat.

4.2.14. Make sure and double-check the connections by tightening the terminations accordingly.

4.2.15. Keep the approved single-line diagram near the LVPs (photo framed), wall mounted inside the substation.

4.2.16. Inspection shall be offered for QC Verification before (Authority) inspection.

5.0. Records

5.1. QC Inspection Check List.

5.2. Inspection request duly signed off by Consultant.

6.0. Attachment

6.1. Inspection Check List for L.V. Panels.

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