Periodic Inspection is a test and inspection to ascertain the condition of an existing electrical installations and to identify any deficiencies against HRN EN 60364 which is the Croatian standard for electrical installations.
All non-domestic electrical installations should be subject to a regular programme of testing and inspection to comply with current legislation. You must ensure that all necessary precautions are being taken to reduce the risk of injury or death through electrical failure.
There are many good reasons for adopting periodic testing. You may need to inspect and test to comply with the HRN EN 60364 or, if you have recently acquired ownership or tenancy of business / workplace premises, you may wish to ensure the installation is safe. If you suspect there is a fault or risk of failure, you must take steps to inspect the affected circuits urgently.
The Inspection and Test Service
Following a visual assessment and verification of the entire electrical installation the following test procedures are applied, where appropriate, in order to ensure the safety of electrical installation:
• Continuity – to ensure that the earthing is continuous throughout the circuit.
• Bonding conductors continuity – to ensure bonding is in place and effective.
• Ring final circuit continuity – to test whether or not the ring is complete.
• Insulation resistance – to test for any breakdowns in insulation.
• Polarity – to check that the installation is correctly wired.
• Earth fault loop impedance – to check the Zs of the installation.
• Earth electrode resistance – to test the earthing rods (applies to TT systems only).
• RCD testing – to check that the Residual Current Device disconnects the supply in the event of a fault.
• Functional testing of isolators and breakers – to ensure that they disconnect the supply.
Upon completion of the electrical testing, a detailed Periodic Inspection Report is supplied containing the following certification:
• Guidance Notes for recipients.
• Schedule of Inspection and Schedule of Test Results.
The engineer who carried out the testing will also talk through the results with you and explain if any remedial work is necessary in order to remedy an unsafe installation. If the electrical installation has any faults, they will be listed under the section of observations and recommendations.