PAT is an abbreviated term used for Portable Appliance Testing which is actually in technical terms is “In-service Inspection & Testing of Electrical Equipment”. The actual definition of this term has been provided by the Institution of Incorporated Engineers (IIE) to form the Institution of Engineering and Technology (IET). The term PAT has popular use in Australia and New Zealand by the name Test and Tag which can be referred as Test and Tag NZ if you are specifically referring for New Zealand or give a specific name Test and Tag AS for Australian regulation. The regulatory guidelines are same in both places and that are set out in AS/NZS3760:2010. The 2010 at the end of this standard code represents the year of enactment of regulation, i.e., Electricity (Safety) Regulations 2010 to which this standard code relates.
Test and Tag NZ standard’s need
The need of Test and Tag NZ standard was felt to prevent cases of accidents and deaths on workplaces due to electric shocks or radiations in New Zealand and to make work environment safer. The enactment of regulation not only created a sense of security in the workers on workplaces but also provided peace of mind to employers to get saved by the liability of huge compensation due to these accidents. This doesn’t need massive investment except little sum for testing and investment in some technical innovations. But this offers a great relief and security to both employer and employees. Some manufacturers of electrical equipments also recommend periodical testing at regular intervals based on type of equipment and the environment where it is being used.
Procedure of Test and Tag NZ
Test and Tag testing usually involves general user checks, visual inspections, and combined inspections and PAT that is a part of PAT procedure. Then testing is conducted using special testing equipments by qualified technician and this testing includes tests for insulation resistance, earth resistance and continuity, and polarity check.