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Basic power accuracy:
±(0.02% of reading
+ 0.04% of range). |
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Frequency range:
DC, 0.01Hz to 1MHz. |
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Power factor error:
0.03% of S (when cosØ = 0)
Where 'S' is reading value of apparent power and 'Ø' is the
phase angle between voltage and current. |
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Current Range:
0.5A/1A/2A/5A/10A/20A/30A or
5mA/10mA/20mA/50mA/100mA/200mA/500mA/1A/2A.
Current ranges are for a crest factor of 3. |
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External Inputs:
50mV/100mV/200mV/500mV/1V/2V/5V/10V. |
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Voltage range:
15V/30V/60V/100V/150V/300V/600V/1000V.
Voltage ranges are for a crest factor of 3. |
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Motor Version
Measurements
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Calculation of motor and total
efficiency, in addition to the functions of the standard
version, the WT models offer powerful motor/inverter
evaluation functions. |
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Voltage, current, and power
measurement with torque and speed input. |
Measure torque meter
and speed sensor output (analog or pulse output), and allows
calculation of torque, revolution speed, mechanical power,
synchronous speed, slip, motor efficiency, and total efficiency
in a single unit.
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Standard Features |
Optional
Features |
- Voltage input terminals.
- Current external sensor input
terminals.
- Current direct input terminals.
- GP-IB port.
- BNC connector for two-system
synchronized measurement.
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- Serial RS-232 port (Option /C2)
or USB port (option /C12).
- Ethernet 100BASE-TX/10BASE-T port
(option /C7).
- VGA port (option /V1).
- D/A output (option /DA).
- Torque and speed input terminals
(motor version
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Characteristics
Example of basic characteristics showing the WT3000's high
precision and excellent stability. |
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| Supports Crest
Factor 6 |
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The crest factor is the
ratio of the waveform:
Peak value and the RMS value.
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When checking the measurable crest factor
of our power measuring instruments, please refer to the
following equation.
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However, the peak value of the measured
signal must be less than or equal to the continuous maximum
allowed input.The crest factor
on a power meter is specified by how many times peak input value
is allowed relative to rated input value. Even if some measured
signals exist whose crest factors are larger than the
specifications of the instrument (the crest factor standard at
the rated input), you can measure signals having crest factors
larger than the specifications by setting a measuring range that
is large relative to the measured signal. For example, even if
you set CF=3, CF5 or higher measurements are possible as long as
the measured value (RMS) is 60% or less than the measuring
range. Also, for a setting of CF=3, measurements of CF=300 are
possible with the minimum effective input (1% of measuring
range). Store
Function (Standard with WT3000)
Voltage, current, power, and other measured data can be stored
to the unit's approximately thirty megabytes of internal memory.
These data can be saved in Binary or ASCII format on a PC card
or USB memory. The USB port for peripherals comes with the /C5
option. |
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Each measured item can be stored every
data update interval. You can specify to store only the desired
measured items, thus saving memory. |
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Files saved in
ASCII format can be opened in general-purpose applications
such as Excel allowing display of data in graphs.
Files saved in
Binary format can only be manipulated using dedicated
software to be made available by Yokogawa. |
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