Delta MS 300M - Display Solar Power Calculator Specifications Page 3

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4
Precision Power Analyzer WT3000
4
FUNCTIONS
WT3000 Controls:
Simple to Use, Easy to View
The WT3000 was designed with user-friendly functions and controls
in response to user requests for a simpler range setting operation
and more user-friendly parameter setting display process.
Simpler range settings
Range settings using direct key input
The range indicator on the WT3000 is a seven-segment green LED, so the set
range can be monitored at all times. The range can easily be switched using the
up and down arrows.
Easily switch between multiple item pages
A wide range of standard functions
Formats for viewing waveforms as well as numerical values
A Variety of display formats
The WT3000 lets you display input signal waveforms in addition to numerical value
data. This means you don’t need to connect a special waveform analyzer just to
check signal waveforms.
*1
In addition, the optional advanced computation function lets you display vectors
and bar graphs for
enhanced visual
presentation.
*1 Waveforms up to
approximately
10 kHz can be displayed
accurately.
*2 Excludes single phase model.
A way to add user-defined measurement parameters
User-defined function
As many as twenty user-defined formulas can be set in the WT3000. These
equations can be used to calculate various parameters, such as mean active
power (see “A variety of integration functions” below).
An easier way to input efficiency calculation formulas
Efficiency calculation function
This function can be used to set up to four efficiency calculation formulas.
Apparent power integration and reactive power integration
A Variety of integration functions
Active power, current, apparent power, reactive power
In addition to the active power integration function (WP) and current integration
function (q) included in earlier models, the WT3000 also has a new apparent
power integration function (WS) and reactive power integration function (WQ).
•A wide effective input range for high-precision integration
The WT3000 has a wide effective input range, from 1% to 130% of the
measurement range.
•Average active power (using user-defined settings)
Average active power can be calculated over an integration interval. This feature
is useful for evaluating the power consumed by intermittent-control instruments in
which the power value fluctuates.
Average active power =
Integrated power (WP)
Integrated elapsed time (H)
Time
Power value
Instantaneous power value
Average active power value
High-speed measurement to capture rapid data fluctuations
50ms data updating intervals
Fast updating allows you to precisely capture rapidly changing transient states in
the measurement subject.
* The WT3000 switches between two different calculation systems depending on
the data updating interval. See page 19 for details.
Compensates for the loss
Compensation functions
This function compensates for the loss caused by the wiring of each element. The
WT3000 has the following three types of correction functions to measure the
power and efficiency.
Wiring Compensation
This function compensates for the loss caused by the wiring of each element.
Efficiency Compensation
The power measurement on the secondary side of a power transformer such as
an inverter includes loss caused by the measurement instrument. This loss
appears as error in the efficiency computation. This function compensates for this
loss.
Compensation for the Two-Wattmeter Method*
In the two-power wattmeter method, an error results when current flows through
the neutral line. This function computes the currents that flows through the
neutral line for measurements using the two-wattmeter method with a three-
phase, three wire (3V3A) system and adds the compensation value to the
measured power. *Requires the delta computation option (/DT).
Storing measurement data*
Store Function
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 *. *requires the /C5 option
Item pages make it easy to set the data you want to view for each experiment
Using item pages to set display preferences
The WT3000 has nine numeric item pages for displaying measurement values.
Once you set the measurement parameters you want displayed on a particular
item page, you can easily switch between entire groups of displayed parameters.
Vector display
*2
Trend display
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