Method Statement Title: Testing of LV Cables / Wires

Method Statement Title: Testing of LV Cables / Wires

1.0       Scope

1. Testing of LV Cables / Wires installed in Tower according to the requirement of the Project Specification.

2.0       Material

• XLPE / SWA / PVC cables,

• PVC Insulated Cables and Flexible wires.

3.0       Testing Equipment

• Continuity Tester

• Insulation resistance tester. (Megger)

Note : The Calibration certificates of testing instruments shall be verified to have current certificate, prior to usage.

4.0       Testing and Commissioning Method

4.1       Physical Checks

• Physical checks will be conducted as follow, prior to testing:

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

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

• Check the Identifications and labeling are provided according to the specification and DEWA requirement.

• Check the glanding and gland earthing termination is correct.

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

4.2       Insulation Resistance Test

• Insulation resistance test will be done by applying 0.5kV for the below mentioned points with suitable insulation resistance tester (Megger).
• Phase to Phase.
• Phase to Neutral.
• Phases to Earth.

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

• Phase rotation test shall be conducted after energisation.

• Check if there is any over heating of cables after a 2 hours of energisation.

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

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

5.0       Records

5.1       Inspection request duly signed-off by NMX and Consultant.

• Attachment

• Cable continuity and Insulation test report .