HSE DOCUMENTS-METHOD STATEMENT FOR TESTING OF LOW VOLTAGE CABLES AND WIRES

 

1.0. Scope

Testing of Low Voltage (LV) Cables/Wires installed in the Tower according to the requirement of the Project Specification.

2.0. Material

2.1. XLPE / SWA / PVC cables,

2.2. PVC Insulated Cables and Flexible wires.

3.0. Testing Equipment

2.3. Continuity Tester

2.4. Insulation resistance tester. (Megger)

Note: 

The Calibration certificates of testing instruments shall be verified to have a current certificate, before usage.

4.0. Testing and Commissioning Method

4.1. Physical Checks

4.1.1. Physical checks will be conducted as follows, before testing:

4.1.1.1. Check the cables are laid properly with proper and adequate support arrangement (i.e. supported in cable trays, trunking, ladder, etc.) properly laid, dressed, and, cleated/tied with cable cleats/ties.

4.1.1.2. Check the cable support arrangements are fixed to the building structure rigidly.

4.1.1.3. Check the Identifications and labeling are provided according to the specification and Water and electricity operator’s requirement.

4.1.1.4. Check the glanding and gland earthing termination is correct.

4.1.1.5. Check if there are any physical damages. Replace as required if any major damages are noticed.

4.2. Insulation Resistance Test

4.2.1. The insulation resistance test will be done by applying 0.5kV for the below-mentioned points with a suitable insulation resistance tester (Megger).

⦁ Phase to Phase.

⦁ Phase to Neutral.

⦁ Phases to Earth.

4.2.2. Record all results and details as per the attached format. The readings are to be verified with permissible limits.

4.2.3. Phase rotation test shall be conducted after energization.

4.2.4. Check if there is any overheating of cables after 2 hours of energization.

4.2.5. Suitable corrective action shall be taken if any discrepancies are found.

4.2.6. Inspection requests shall be raised for a consultant to witness the testing (random test).

5.0. Records

5.1. Inspection request duly signed off by Consultant.

6.0. Attachment

6.1. Cable continuity and Insulation test report.

6.2. Risk Assessment

6.3. Checklist

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