Yokogawa Meters & Instruments Releases LS3300 AC Power Calibrator Capable of Simultaneous AC Voltage and Current Output

July 17, 2017
Focusing on power calibration to deliver quality results at a reasonable cost

Yokogawa Meters & Instruments Corporation announces that it has developed the LS3300, an AC power calibrator that can accurately and stably produce a wide range of AC power outputs for the calibration of power meters and other types of power measuring instruments. As it focuses exclusively on power meter calibration, the LS3300 will dramatically reduce the cost for our customers. The calibrator is now available for sale as of July 14.

Development Background

Measuring instruments such as power meters, thermometers, and multimeters that are used in product development and on production lines need to be calibrated periodically. Due to the recent widespread introduction of quality management systems that are compliant with ISO 9001 and other international standards, there is an increasing need for the calibration of measurement instruments.

Instruments used to calibrate power meters and power analyzers are capable of simultaneous voltage and current output with adjustable phase and can also perform three-phase* AC power calibration if multiple calibration units are used in synchronization. These multifunctional instruments have a high price-tag, are only capable of continuously outputting large currents for short periods, and are difficult to set up and operate for three-phase AC power calibration. As such, they do not meet the needs of customers who would like to calibrate smart meters and other power meters that require a large output current, calibrate single-phase AC power meters with a single unit, and easily and efficiently calibrate three-phase AC power.

In response to such needs, Yokogawa Meters & Instruments Corporation has developed the LS3300 AC power calibrator.


1. Reduced cost

The LS3300 can calibrate AC voltage, current, and power as well as test both phase difference and power factor. While costing considerably less than other calibrators due to focusing exclusively on power calibration, the LS3300 delivers a high accuracy of ±0.045% and a superb stability of ±0.01% per hour.

2. Ideal for calibration of large-current measuring instruments and current sensors

Unlike many other calibrators on the market, the LS3300 includes as a standard feature, the ability to output currents of up to 62.5 A for extended periods of time. Further, three LS3300s can be synchronized to easily output currents of up to 180 A, thus enabling the calibration of instruments such as smart meters and shunt-resistor current sensors and other devices that require higher currents.

3. Ideal for calibration of three-phase AC power

One LS3300 unit can calibrate single-phase power meters. Multiple LS3300s can be used together to calibrate power meters used in single-phase three-wire AC power and three-phase AC power measurement. Using the multiunit control features of the LS3300, it is possibly to automatically set the voltage, current, power factor, phase, and other values on slave devices by updating those settings on the master unit. This significantly reduces the amount of time needed for single-phase three-wire and three-phase AC power calibration.

Major Target Markets

  • Government calibration laboratories, privately owned calibration organizations, companies with departments that perform in-house calibration of power meters and other measuring instruments
  • Companies that develop and/or manufacture measuring instruments such as power meters, clamp power meters, clamp testers, and smart meters


Generation of voltage and current signals for calibration and testing of measuring instruments such as power meters, clamp-on power meters, clamp testers, and smart meters

* A single-phase two-wire system uses two conductors to carry the power of a single circuit, and a single-phase three-wire system uses three conductors to carry the power of two circuits. Three-phase AC power is a combination of three single-phase AC circuits.

For more information, click here >>