Each individual earth grounding point and its conductors are electronically tested for resistance to ground.
Lightning protection system testing procedure.
With the test clamp disconnected the resistance of each individual earth should be no more than ten times the number of down conductors in the complete system.
Afp 91 38 6 2 3 states that the electrical test procedures.
The grounding and lightning protection system shall be given a visual inspection by the engineer during the installation.
The complete table of inspection and testing activities that shows each activity to be performed in order to make sure that the installed earthing lightning protection systems are compliant to the project s specifications and requirements the reference to be followed acceptance criteria responsible personnel related checklist from item 3 below the required level of interference from each party contractor consultant third party such as.
The contractor should not allow any backfilling of trenches or pits where these systems are installed before inspection by the engineer and the appropriate documents are signed.
The terminated head of each electrode shall be located in a light weight inspection pit.
An lpt also includes.
Army 5 and air force 6 documents provide specific lightning protection and grounding systems test procedures.
By law certified testing must occur within a two year time frame.
A premises safety audit has identified that this has never been fully inspected or tested.
The resistance between these components and the lightning protection system shall be less than one 1 ohm.
The complete lightning protection system measured at any point should not exceed 10 ohms.
Care should therefore be taken to ensure that the tester is clamped around the earth tape below the point where these connections are made otherwise the resistance measured will be that of the electrode in parallel with any other paths to earth.
A lightning protection test lpt involves all lightning conductors and earth grounding installations being visually inspected and tested by a qualified electrical engineer.
What is lightning protection testing.
Testing a lightning protection system.
To ensure thorough and correct maintenance a lightning protection test checklist should be followed.
When testing earth electrodes in lightning protection systems it is important to remember that there may be multiple connections to the system.
The purpose of this procedure is to define the step by step method to implement the correct practices for the precommissioning testing commissioning of lightning protection system through the guidelines contained herein so as to ensure that the job execution complies with the project requirements and serves the intended function to satisfactory level.
What are the requirements for testing and inspecting of the system.
Upon completion of installation after work on expansion modification addition or other changes to the underlying protected structure s that requires disturbing the system nfpa 780 b 5 after relocation of components supporting the system.
A lightning protection test and earth grid test must be carried out when the installation has been completed and should be done by a licensed electrician.
Inspection survey report review.
Inspection and testing procedures.
Health and safety procedures in the event of flooding.
