WE ARE TESTING A LAPTOP ADAPTER AT 220 VOLTS UPS AC INPUT. WE ARE USING EMBUILT SPEA-1 TO TEST THE ADAPTER PROPERTIES.
Laptop Adapter Specifications : 100-240 Volts AC, 1.6A,50-60Hz

When power is on the following results are found –

Vrms- 217.8 Volts	VTHD% -8.7%
Arms -376.6mA	ATHD% -82.6%
Watt -59.36Watt	V3rd Harmonics Value – 15.67 Volts

Here we can see that VTHD is 8.7% which means UPS Supply has 8.7% distortion in Voltage. It also effect the wave form of UPS Supply or we can say that Voltage waveform is not 100% sine wave(Ideal condition).

ATHD % is 82.6 which means Laptop Adapter distorted the AMPS waveform by 82.6 %. It also has effect of Voltage THD. 

We can also see the 3rd harmonics of Voltage is 15.67 Volts. 

 

Here we can see the 3rd harmnonics of voltage in % of first harmonics. 3rd Voltage harmonics is 7.1% of Vrms Harmonics.

Here we note that ideally first harmonics is to be equal of Vrms and other order harmonics are to 0.

So we need to minimize the harmonics.

Here we can see the 3rd harmonics Value of Amps. It is 215.01mA it has another waveform with Amps(Current) level of 215.01mA.

In the above image 3rd Harmonics of Amps shows in display 6. It is 57.1% of Arms (378.1mA).

Other parameters can also seen on SPEA-1.

You can also view readings on the SPEA-1 Software.

Softare is connected to SPEA-1 for real time data viewing and reporting.

 

Above is the voltage harmonics spectrum . All values are given in % of Vrms.

 

Above is the Amps(Current) harmonics spectrum . All values are given in % of Arms.

Harmonics report is also generated which contains the parameter values with Harmonics spectrum.

Click here to download the harmonics report .