Power analyzer

Data records

• The class includes line-powered bench instruments used in development laboratories and battery-powered portable analyzers used to measure directly at the load in the field, where equipment is tested under its real operating conditions without being taken out of service. Source: Fluke product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.bench-vs-portable
• The accuracy of a power analyzer is specified for a stated period after calibration, and the most accurate instruments of the class serve as the reference standard for periodic in-house calibration of other power meters. Source: Yokogawa product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.calibration
• Current is measured through internal shunts or through external current sensors; a sensor introduces a phase shift at high frequency that the instrument corrects, which matters for the low-power-factor measurements typical of reactors. Source: Hioki product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.current-sensors
• A power analyzer differs in purpose from a power quality analyzer: it is a precision instrument for characterizing the power conversion of a device under test, with accuracy specified from DC through high frequencies, whereas a power quality analyzer monitors and records disturbances on a supply over time. Source: Hioki product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.distinction
• Harmonic analysis on a power analyzer extends to high orders and, with the maker's software, supports harmonic and flicker emission testing of equipment against the applicable standards. Source: Yokogawa product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.harmonics-and-compliance
• A power analyzer measures voltage, current, active, reactive and apparent power, power factor, frequency, energy and harmonics on each input channel and computes efficiency and loss between channels, such as across an inverter or a motor drive. Source: Hioki product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.measurand
• A motor analysis option takes speed and torque inputs from rotation and torque sensors and computes mechanical power, so the electrical-to-mechanical efficiency of a motor drive is measured in one instrument. Source: Yokogawa product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.motor-analysis
• Multi-channel designs with swappable input elements measure several phases and the DC side of a converter at the same time, so the input and output of a converter, inverter or battery system are compared on one instrument, and several instruments can be synchronized for larger systems. Source: Yokogawa product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.multi-channel
• Because inverter and drive waveforms switch at high frequency, the instrument samples far above the power frequency with high-resolution converters and specifies a power bandwidth that reaches the switching frequencies, so that the power in a pulse-width-modulated waveform is captured correctly. Source: Yokogawa product page, web page edition. Verified 2026-10-27. Record instr.power-analyzer.wideband-sampling