Free test assesses harmonics

Deltron Emcon, part of the Abacus Group, is offering a free harmonics distortion test for manufacturers and processors required to meet G5/4 recommendations for power quality. The no-obligation on-site test provides an instant measurement of the harmonic distortion level, enabling the company to review nonlinear loads and make any necessary adjustments. The G5/4 recommendations are applied by the UK's network operating companies (NOCs) to power distribution from substations connected to the grid, and require emission limits and mitigation measures to be recorded.

Used in NOC contracts for installations built or upgraded since 2001, the recommendations are increasingly used as criteria in assessments made by utility companies as to set up or continuation of connection.

Some of the problems caused by harmonic distortion can be resolved by the derating of equipment such as transformers and motors, and circuit overload trip settings.

Other problems can be resolved using harmonic filters to reduce or cancel the harmonic components.

Once the initial test has been conducted, Deltron Emcon can provide advice as to the best solution for the individual site.