Understand where your motors use energy and whether improved control suits the duty.
Record the operating profile, throttling or bypass behaviour and measured electrical input. Consider speed control where process demand varies, alongside correctly sized equipment and controls.
Savings depend on load characteristics, speed range, operating hours and existing controls. A VSD does not guarantee a saving on every application.
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Illustration: reducing measured electrical input from 7 kW to 5 kW for 16 hours/day over 22 days saves 704 kWh. At an assumed R3/kWh, this is R2,112/month in energy charges. These are example measurements, not a promised saving from installing a VSD. Fixed charges and project costs remain.
Motor nameplate, process type, minimum/maximum demand, running hours, existing control method and measured electricity use.
No. The operating duty and system matter. Variable flow applications may benefit; constant full-load operation may offer little energy saving. Use actual measurements and an engineered comparison.
Choose supply only, or ask EAC to scope engineering, installation and commissioning. Site work and delivery are confirmed in the quotation.
