Power Loggers
Power Loggers
Power loggers are portable, self-contained instruments that record electrical parameters over extended periods — from hours to weeks — to support energy management, load analysis, and power quality investigations. Unlike real-time analyzers, power loggers are installed on a circuit and left unattended, capturing voltage, current, power, power factor, and energy consumption at configurable intervals for later analysis. This makes them invaluable for understanding actual operating conditions across an entire load cycle rather than relying on instantaneous snapshots.
Three-phase power loggers connect directly to distribution panels or service entrances and transfer collected data to PC software for reporting, demand profiling, and anomaly detection. They are a cornerstone tool for energy auditors, facilities managers, and electrical contractors conducting baseline assessments and efficiency studies. Many models comply with IEC 61000-4-30 Class A or Class S standards for power quality measurement.
Typical Applications
- Energy auditing and ISO 50001 compliance reporting in commercial buildings and industrial plants
- Load profiling for electrical system upgrades and capacity planning
- Identifying energy waste and peak demand charges on industrial feeders
- Long-term power quality monitoring for harmonics, flicker, and voltage variations
- Verifying energy savings after retrofits, equipment replacements, or tariff changes
- Tenant sub-metering and cost allocation in multi-occupancy facilities
Popular Brands
Fluke dominates the power logger market with their 1730 series — including the 1732, 1734, and 1736 — offering three-phase logging with comprehensive Energy Analyze software. Hioki and Yokogawa also provide capable power loggers for industrial and laboratory energy measurement applications.
