User Manual

The menu system

After selectin

g Ballast mode you need to set up the fundamental frequency at

which power will be transmitted. This is typically 50, 60, or 400 Hz. The setup

screen can b e found under the Modes → Setup Modes → Ballast Setup.The

power analyzer uses this to adjust the measurement window to ﬁt the speciﬁed

frequency.

The returned frequency is not the fundamental power frequency; but the ballast

switching frequency. This is also the frequency used for harmonic analysis.

When Ballast mode is selected, the frequency range is set to “ >10 Hz” and the

bandwidth is set to “High” for the group. These setting are locked out in Ballast

mode and, upon the return to normal mode, the settings are restored.

Standby P

ower mode

Standby Power mode integrates the watts, amps, VA and PF readings over

a user-speciﬁed measurement period. This is a requirement of many standby

power standards.

Driven by consumer demand and energy efﬁciency legislation, there is an

ever-increasing need to measure power consumption of products while they are

in stan

dby mode.

One of the most widely used standards for measurement is IEC 62301. Part of

this s

tandard requires the measurement of power over a prolonged period of time

without missing any short duration power events. The Standby Power mode

provides continuous sampling of voltage and current to produce a n accurate watts

measurement over the user speciﬁed period.

In Standby Power mode, you must specify the integration window in seconds.

Watts, amps, PF, and VA will then be integrated over the speciﬁed period. All

other results will be updated at the normal user speciﬁed update rate.

The integration period depends on the combination of the speciﬁed window and

theupdaterateoftheinstrument.(Seepage60,Update rate.) This is because the

results will be integrated over a n exact multiple of the update rate. For example, if

he update rate is 0.5 seconds (default), then the integration period will always be

exactly as speciﬁed. However, if an update rate of 0.4 seconds is requested, then

integration period will switch between 1.2 seconds and 0.8 seconds.

For the most accurate measurements it is recommended that the ranges are ﬁxed

during the measurement period. (See page 50, Fixed/Auto ranging.)

Integrator mode

Integrator mode provides measurements for determining energy consumption by

integrating measurements over a speciﬁed period or by running continuously.

Integration can be started manually, by a threshold trigger, or at a speciﬁcvalue.

In addition, for certain parameters, average values are also a vailable.

PA3000 Power Analyzer User Manual 43