42 days of continuous monitoring on a single heat exchanger pump circuit at a palm oil refinery uncovered a critically low power factor, two unexplained multi-day shutdowns, and a persistent phase imbalance — all invisible without minute-by-minute sensor data.
Wiser's sensor monitored one electrical circuit at the facility — an exceptionally flat 9.13 kW load profile characteristic of a centrifugal pump, air compressor, or refinery stage running at steady state. 70,799 one-minute readings were captured with zero data gaps.
A monthly utility bill shows none of this. Only continuous, high-resolution monitoring surfaces a structural inefficiency running 100% of operating hours, two unexplained shutdown events, and a persistent phase imbalance.
Wiser's non-invasive sensor tapped current, power, power factor, and voltage on all three phases without touching the circuit. The remaining 10.33 kVAR circulates as reactive current — generating heat and occupying conductor capacity without contributing to output.
Phase 3 draws 19.17A on average — 7.7% higher than Phase 1's 17.78A — persistent across all 42 days. Sustained imbalance elevates motor operating temperature and shortens insulation lifetime. Voltage quality, by contrast, was excellent throughout — zero readings below the 220V threshold.
Correcting power factor to ≥0.95 cuts current draw ~30%, eliminates reactive-power surcharge exposure entirely, and saves an estimated MYR 4,700–9,700/year on this circuit alone — before accounting for the rest of the facility.