Yokogawa LS3300 AC Power Calibrator

The Yokogawa LS3300 AC Power Calibrator is a precision instrument that simultaneously outputs AC voltage and current to calibrate power measurement devices across single-phase and three-phase configurations. It delivers voltage from 10 mV to 1250 V at ±350 ppm accuracy, current from 0.3 mA to 62.5 A at ±450 ppm accuracy, and phase angle control to ±0.03° at 50/60 Hz. Three synchronized units cascade to deliver up to 187.5 A, supporting 1P2W, 1P3W, 3P3W, and 3P4W system topologies.

The calibrator operates across 40 to 1200 Hz with power factor range from −1.0 to +1.0 and outputs 78.5 kW per unit. Long-term stability remains within ±50 ppm/h for voltage and current, ±100 ppm/h for power. USB and BNC synchronization enable linked multi-unit setups with interlinked amplitude, phase, and control parameters.

An auxiliary output terminal provides 500 mV or 5 V selectable ranges to 6.25 V maximum. The 5.7-inch color LCD display supports intuitive operation in calibration laboratories, manufacturing facilities, and R&D environments.

Technical Specifications

Voltage and Current Output

• AC Voltage: 10 mV to 1250 V, ±350 ppm accuracy, ±50 ppm/h stability


• AC Current: 0.3 mA to 62.5 A, ±450 ppm accuracy, ±50 ppm/h stability


• AC Power: ±450 ppm accuracy, ±100 ppm/h stability


• Phase Angle: ±0.03° accuracy at 50/60 Hz, 0.001° minimum resolution


• Frequency: 40 to 1200 Hz


• Power Factor: −1.0 to +1.0 (leading and lagging)


• Output Voltage Noise: 350 ppm Synchronized Multi-Unit Operation


• Three units: up to 187.5 A combined output


• System configurations: 1P2W, 1P3W, 3P3W, 3P4W


• Synchronization via BNC cables; control via USB


• Interlinked settings for amplitude, phase, and output control Auxiliary Output


• Selectable ranges: 500 mV or 5 V


• Maximum output: 6.25 V Power and Supply


• Per-unit output: 78.5 kW


• Supply voltage: 90–132 VAC, 180–264 VAC


• Supply frequency: 48–63 Hz

Key Features

• Dual simultaneous voltage and current sourcing for realistic power simulation


• Phase angle resolution to 0.001° for demanding meter calibrations


• Scalable architecture - single unit or synchronized cascade to 187.5 A


• USB and BNC interfaces for laboratory automation and multi-unit control


• Traceable to national measurement standards

Typical Applications

• Calibration of AC voltage, current, active/reactive power, and power factor


• Phase meter inspection and phase angle validation


• Power transducer input/output adjustment


• Clamp-on power meter and current transformer verification


• Needle sticking tests on analog meters

Compatibility & Integration

• Supports power meters, energy meters, current clamps, panel meters, RMS multimeters, current sensors, and power transducers


• Power Meter Calibration Software included; LabVIEW drivers available


• National standard traceability certification