Delta MS 300M - Display Solar Power Calculator Spezifikationen PDF herunterladen (Seite 13)

Precision Power Analyzer WT3000

Number of

measurement

channels

Storage Interval

50 ms

1 sec

50 ms

1 sec

Approx. 10 hr 20 m

Approx. 86 hr

Approx. 2 hr 30 m

Approx. 24 hr

2ch

4ch

Measured Items

(Per CH)

Storable Amnt. of Data

Measurement Function

Rotating speed

To rque

SyncSp

Slip[%]

Motor output

Method of Determination, Equation

When the input signal from the revolution sensor is DC voltage (analog signal)

Input voltage from revolution sensor x scaling factor

Scaling factor: Number of revolutions per 1 V input voltage

When the input signal from the revolution sensor is number of pulses

When the type of input signal from the torque meter is DC voltage (analog signal)

Input voltage from torque meter x scaling factor

Scaling factor: Torque per 1 V input voltage

When the type of input signal from the torque is number of pulses

Enter N·m equivalent to upper- and lower-limit frequencies to determine an

inclination from these two frequencies, and then multiply the number of pulses.

Number of input pulses from revolution sensor per minute

Number of pulses per rotation

×Scaling factor

120 x freq. of the freq. meas. source

motor’s number of poles

SyncSp-Speed

SyncSp

×100

2π×Speed×To rque

×scaling factor

Functions

Measurement method Digital multiplication method

Crest factor 3 or 6 (when inputting rated values of the measurement

range), and 300 relative to the minimum valid input. However,

1.6 or 3.2 at the maximum range (when inputting rated values

of the measurement range), and 160 relative to the minimum

valid input.

Measurement period Interval for determining the measurement function and

performing calculations.

Period used to determine and compute the measurement

function.

• The measurement period is set by the zero crossing of the

reference signal (synchronization source) when the data

update interval is 50 ms, 100 ms, 5 s, 10 s, or 20 s (excluding

watt hour WP as well as ampere hour q during DC mode).

• Measured through exponential averaging on the sampled

data within the data update interval when the data update

interval is 250 ms, 500 ms, 1 s, or 2 s.

• For harmonic measurement, the measurement period is from

the beginning of the data update interval to 9000 points at the

harmonic sampling frequency.

Wiring You can select one of the following five wiring settings.

1P2W (single phase, two-wire), 1P3W (single phase, 3 wire),

3P3W (3 phase, 3 wire), 3P4W (3 phase, 4 wire),

3P3W(3V3A) (3 phase, 3 wire, 3 volt/3 amp measurement).

However, the number of available wiring settings varies

depending on the number of installed input elements. Up to

four, or only one, two, or three wiring settings may be

available.

Compensation Functions • Efficiency Compensation

Compensation of instrument loss during efficiency calculation

• Wiring Compensation

Compensation of instrument loss due to wiring

• 2 Wattmeter Method Compensation (/DT option)

Compensation for 2 wattmeter method

Scaling When inputting output from external current sensors, VT, or

CT, set the current sensor conversion ratio, VT ratio, CT ratio,

and power coefficient in the range from 0.0001 to 99999.9999.

Input filter Line filter or frequency filter settings can be entered.

Averaging • The average calculations below are performed on the normal

measurement parameters of voltage U, current I, power P,

apparent power S, reactive power Q. Power factor l and

phase angle Ø are determined by calculating the average of P

and S.

Select exponential or moving averaging.

• Exponential average

Select an attenuation constant of 2, 4, 8, 16, 32, or 64.

• Moving average

Select the number of averages from 8, 16, 32, 64, 128, or 256.

• The average calculations below are performed on the

harmonic display items of voltage U, current I, power P,

apparent power S, reactive power Q. Power factor l is

determined by calculating the average of P and Q.

Only exponential averaging is performed. Select an

attenuation constant of 2, 4, 8, 16, 32 or 64

Data update rate Select 50 ms, 100 ms, 250 ms, 500 ms, 1 s, 2 s, 5 s, 10 s, or

20 s.

Response time At maximum, two times the data update rate (only during

numerical display)

Hold Holds the data display.

Single Executes a single measurement during measurement hold.

Zero level compensation/Null Compensates the zero level.

Integration

Mode Select a mode of Manual, Standard, Continuous (repeat),

Real Time Control Standard, or Real Time Control Continuous

(Repeat).

Timer Integration can be stopped automatically using the integration

timer setting. 0000h00m00s~10000h00m00s

Count over If the count over integration time reaches the maximum

integration time (10000 hours), or if the integration value

reaches max/min display integration value (±999999 M), the

elapsed time and value is saved and the operation is stopped.

Accuracy ± [power accuracy (or current accuracy) + time accuracy]

Time accuracy ± 0.02% of reading

Remote control EXT START, EXT STOP, EXT RESET, EXT HOLD, EXT

SINGLE and EXT PRINT (all input signal) / INTEG BUSY

(output signal). Requires /DA option.

Display

• Numerical display function

Display resolution 600000

Number of display items Select 4, 8, 16, all, single list, or dual list.

• Waveform display items

No. of display rasters 501

Display format Peak-peak compressed data

Time axis Range from 0.5 ms–2 s/div. However, it must be 1/10th of the

data update rate.

Triggers

Trigger Type Edge type

Trigger Mode Select Auto or Normal. Triggers are turned OFF automatically

during integration.

Trigger Source Select voltage, current, or external clock for the input to each

input element.

Trigger Slope Select (Rising), (Falling), or (Rising/Falling).

Trigger Level When the trigger source is the voltage or current input to the

input elements. Set in the range from the center of the screen

to ±100% (top/bottom edge of the screen). Setting resolution:

0.1%

When the trigger source is Ext Clk, TTL level.

Vertical axis Zoom Voltage and current input to the waveform vertical axis zoom

input element can be zoomed along the vertical axis.

Set in the range of 0.1 to 100 times.

ON/OFF ON/OFF can be set for each voltage and current input to the

input element.

Format You can select 1, 2, 3 or 4 splits for the waveform display.

Interpolation Select dot or linear interpolation.

Graticule Select graticule or cross-grid display.

Other display ON/OFF Upper/lower limit (scale value), and waveform label ON/OFF.

Cursor measurements When you place the cursor on the waveform, the value of that

point is measured.

Zoom function No time axis zoom function

* Since the sampling frequency is approximately 200 kHz, waveforms that can be

accurately reproduced are those of about 10 kHz.

• Vector Display/Bar Graph Display

Vector display Vector display of the phase difference in the fundamental

waves of voltage and current.

Bar graph display Displays the size of each harmonic in a bar graph.

• Trend display

Number of measurement channels Up to 16 parameters

Displays trends (transitions) in numerical data of the

measurement functions in a sequential line graph.

• Simultaneous display Two windows can be selected (from numerical display,

waveform display, bar graph display, or trend display) and

displayed in the upper and lower parts of the screen.

Saving and Loading Data

Settings, waveform display data, numerical data, and screen image data can be saved to

media.*

Saved settings can be loaded from a medium.

* PC card, USB memory (/C5 option)

Store function

Internal memory size Approximately 30 MB

Store interval (waveform OFF) Maximum 50msec to 99 hour 59 minutes 59 seconds.

Guideline for Storage Time (Waveform Display OFF, Integration Function OFF)

Note: Depending on the user-defined math, integration, and other settings, the actual

measurement time may be shorter than stated above.

Store function can’t use in combination with auto print function.

Motor Evaluation Function (-MV, Motor Version)

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Delta MS 300M - Display Solar Power Calculator Spezifikationen Seite 13

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