- Built-in printer (optional)
By using a built-in printer, you can print the measurement values and set data. Also, when performing harmonic analysis, you can print out the measurement values in the form of a bar graph.
- Harmonic analysis function (optional)
By installing a harmonic analysis function, you can measure voltage, current, power and harmonic content up to the 50th harmonic in accordance with IEC1000-3-2. (The analysis range can be set between the 1st and 50th harmonic, and the window width can be varied according to the fundamental frequency.)
- Voltage fluctuation and flicker measurement function (optional)
Flicker is evaluated according to the extent of the fluctuation (flicker) of brightness perceived by the human eye. The limit value of flicker caused by electrical equipment is stipulated by IEC1000-3-3 (an international standard pertaining to the limit values of voltage fluctuation and flicker for equipment that has a rated input current per phase of no more than 16 A). This instrument measures five kinds of values covered by this standard (relative steady-state voltage change, maximum relative voltage change, time during which the relative voltage change exceeds the threshold level, long period flicker value, and short period flicker value), enabling you to judge these values with respect to the limit values.
- MATH Function
This function enables you to calculate the input-to-output efficiency and crest factor, perform mathematical operations between DISPLAY and A and B.
- Peak overload warning
LED indicators warn you if the peak voltage or current exceeds the maximum allowable value for any element.
- Range and measurement mode selection
You can select the range and measurement mode for each input element.
- RMS:
- Calculation and display of the true RMS value
- MEAN:
- Calculation and display of the rectified MEAN value converted into an RMS value
- DC:
- Calculation and display of the DC value using a simple averaging method (with sign)
- Wh or Ah measurement
You can display the results of measurements with maximum resolution even for short integration periods by varying the resolution according to the integration time. You can also perform signed DC input data integration.
- Line filter function
The instrument has a line filter which is effective for measuring the RMS value of the fundamental wave of the output voltage which is necessary for evaluating an inverter. You can select a cutoff frequency of either 500 Hz or 5.5 kHz.
- Setting the display update rate
You can set a suitable update rate for the operation frequency of the measurement object. For a display update rate of 2 seconds, you can perform stable measurements from 2 Hz.
- Display
You can display four items simultaneously at a maximum resolution of 50000 counts. During frequency measurement, a resolution of 1 mHz can be achieved for an input at the commercial line frequency.
- Peak hold function
By using this function, you can hold and display the maximum value (peak value) of each measurement value. (This does not apply to integration or harmonic analysis.)
- Key-lock function
This function enables you to disable the keys so that settings are not changed if you accidentally touch the keys during measurement.
- Current inputs
Large capacity diodes are installed to protect the internal shunt resistors from damage in the event of an input overload. The current inputs are isolated from the voltage inputs. (The maximum withstanding voltage between the voltage and current input terminals is 3700 V AC.)
- 14-channel D/A output (optional)
Provides V DC F.S. analog outputs for V, A, W, var, PF, deg and Hz. You can freely select the items to be output on these 14 channels as well as the communication output and printer output.
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