Why is Harmonic Study and Analysis Important for Companies in New Zealand | Carelabs

Harmonic problems are relatively uncommon compared to other power quality issues, but when they do appear in a New Zealand facility, the consequences reach further than most businesses expect: reduced power system reliability, equipment malfunction from excessive voltage distortion, increased internal energy losses that shorten component life, false tripping of branch circuit breakers, and metering errors that distort energy billing.

The risk rises specifically when a facility adds significant nonlinear load or installs a power-factor correction capacitor bank, which can shift a system's resonant frequency toward an existing harmonic. That's when a harmonic study, using a harmonics analyser and impedance-versus-frequency modelling, becomes worth doing rather than optional. Carelabs' studies for New Zealand facilities are delivered against AS/NZS 3000.