3
From minute standby power to rush current for motors
Applications that efficiently evaluate
electrical equipment
❑
Common features of the 3331 and 3332
●
Measurement of rush current during device start-up
Measurement of the current waveform wave peak is possible,
and if the peak hold function is used, wave peak detection of
the motor rush current waveform
(Max. 90A)
and the maximum
value of the effective value can be done.
●
Measurement of the RMS value for
industrial frequency components.
The average rectified effective value indicator method
(MEAN) with 500Hz low-pass filter is employed to measure
basic wave RMS values of PWM voltage form inverters.
Comparison of voltage display values of RMS and MEAN with the low-pass filter
RMS display of
PWM voltage
waveforms.
MEAN display of
voltage waveform
after filtering.
RMS response at 0.2 sec.
●
Understanding consumptive and
regenerative conditions
Consumptive (+), regenerative (-), and
total power integration values can be
simultaneously measured on equipment
that regenerate power.
Integration progress time
Total (±) integration value
Consumptive element (+)
integration value
Regenerative element (-)
integration value
❑
Special Features of the 3331
●
3-phase line imbalance can be checked
The third phase voltage and current that had not been
measured for 2-power measurement systems (2 voltage/2
current) can be calculated by vector calculation and displayed.
U
1
voltage display
U
2
voltage display
●
The 3331 can be used to measure single -
phase power for 2 devices
Two devices with single-phase, 2-wire loads can be
simultaneously measured, contributing to lower facilities cost.
Note) Ranges for each channel
cannot be independently set.
U
3
voltage display
Average voltage display for each phase
❑
Special Features of the 3332
●
Measurement of standby power under 1W
Current input 1W or less can be precisely measured
(guaranteed accuracy range is from 7.5mW)
by employing the CT method
(input resistance under 2mΩ)
for minimal
instrument damage for current input, and with 150.000mW
(150V-1mA range)
in full scale as the highest sensitivity range for 100V devices. In addition,
with guaranteed accuracy from 1Hz, the 3332 is also compatible with intermittent oscillating devices, such as videos.
●
Precise calculations of minute standby power
When the 150V/1.0000mA range is selected, integration from ±000.000mWh can be
performed. Low numbers/units are automatically switched to a 6-digit display, allowing
measurement in high resolution.
Integration display screen
Current integration display
Integration progress time
●
Comparative decision function that can be used
on the production line
Two items can be chosen from among voltage, current, power (active, reactive,
apparent), peak current, power factor, phase angle, frequency and integration value
for simultaneous comparative decisions. In addition to Hi/In/Lo LED lamps, decision
results are output to contact points. Up to 10 conditions can be stored, a powerful
function to reduce repetitive steps on small output/multi-product lines.
Other parameters
Active power integration
Comparator setting screen
Comparative value setting
Other parameters
Comparator decisions
Measurement value
ASM-SENSOR [ ASM GMBH ]
