The PWRDDS option enables cost-effective calibration of power (watts) and VA ranges on power meters and clamp meters with power measurement functions. The PWRDDS option provides variable voltage and current simultaneously with an accurately adjustable phase relationship. In addition to the functions provided by PWRSINE, PWRDDS enables harmonics and distortion to be added to the power output for calibration of power quality functions of advanced power meters.
Any voltage up to 1025V can be set, with a maximum current output of 30A without the need for external current amplifiers, allowing up to 1.5MW of power to be simulated.
The power function is very easy to use through intuitive menu design. Simply select ‘Power’ from the calibrator menu, enter the required parameters and connect the power meter to the indicated terminals. Voltage, current, frequency and phase can all be entered using the numerical keyboard, with phase angle adjustable to a resolution of 0.1°.
Power output is automatically calculated, and power factor and apparent power are also displayed on the screen automatically for quick comparison.
Pre-programmed harmonics are loaded into memory, with custom waveform shapes able to be loaded into the calibrator through the included computer software for completely customised testing with waveforms with custom harmonic content.
