MAVOWATT 45 POWER  DISTURBANCE ANALYZER 

MAVOWATT 45 DIGITAL POWER  DISTURBANCE ANALYZER 

MAVOWATT 45 Digital Power Analyzer.
The MAVOWATT 45 portable instrument can be used for the measurement of electrical quantities in direct current systems, as well as in single and 3-phase alternating current systems of up 400 Hz with any load characteristics. 
The TCM option allows for measurements at the outputs of frequency converters (motor controls).
Options:
 MAVO-FFT – Harmonic Analysis
 MAVO-PDA – Power Disturbance Analysis
 MAVO-TCM – Transient and Converter Measurements
 MAVO-FSA – Flicker Analysis

Digital Power Analyzer.

Applications range from the logging, representation and recording of mains quantities through the recognition and analysis of fluctuations and other power supply disturbances (optional harmonic distortion and power disturbance analysis), on up to the analysis and recording of energy consumption.

A multitude of applications possibilities can also be found in industrial environments. 
For example, it serves as a precision recording/measuring instrument for the determination of characteristic quantities for electrical load components or generators in both static and dynamic conditions. 
With the FFT option it functions as a test instrument and compares the harmonic currents from load components with the prescribed limit values.

Thanks to its compact and rugged design, the MAVOWATT 45 is not restricted to stationary operation, but can also be used for mobile applications.

Options

MAVO-FFT  Harmonic Analysis

This option expands the MAVOWATT 45 with the capability to simultaneously log, display and analyze the harmonic components of voltage and/or current. The DC components, fundamental components and harmonic components of voltage and current, up to the 50th harmonic as related to a fundamental frequency of 15 to 400 Hz, are continuously and uninterruptedly logged at all three phases, calculated and represented as numerical values or as a bar graph in a phase selective fashion in real-time by means of the fast Fourier transformation process. Alternatively, the measurement values for respective total harmonic distortion at all three phases for voltage and current can be simultaneously displayed or statistically classified.

MAVO-PDA Power Disturbance Analysis

The MAVOWATT 45 makes use of analysis procedures for power disturbance analysis which allow for the uninterrupted monitoring and classification of disturbances in power supply networks. 
Measured quantities which are logged for the duration of 2, 4, 8 or 16 signal periods for all phases, or selected phases, (voltage and current effective values, frequency and THD) are continually compared with the respective, individually selected tripping criteria (upper limit for U/I/THDU/ THDI/f, lower limit for U/I//f, fluctuation factor for U/I). Individually or simultaneously occurring events are recorded uninterruptedly and are summarized in three different tables: number and type of voltage and frequency disturbances which have occurred within an adjustable time interval, number and type of current disturbances which have occurred within an adjustable time interval, list of events including time of occurrence, cause and measurement value. If uninterrupted logging is not required, voltage and current signal characteristics at the moment the event occurs can be represented with enhanced time resolution. This allows for the documentation of significant line voltage characteristics as required by 
EN 50160, as well as, for example, the analysis of load component making operations.

MAVO-TCM Transient Logging Converter Measurement

The MAVO-TCM expands the scope of functions included with the MAVOWATT 45 to include two special facilities for mains power measuring technology:
• brief transient events can be captured which occur in alternating or direct current power supply lines, as well as at power consumers connected to them.
• the instrument is capable of acquiring measured quantities for power and energy analysis at frequency converter outputs.
 
Transient Measurement
Voltage transients with a duration of at least 20 µs can be acquired, and measured at levels of up to 1500 Vs.
Trigger conditions for events recording are derived from a comparison of the absolute level of a sampled value and the selected trigger level (Up or lp). A rate of change trigger is active as well. 
The sampling interval (20 us to 640 us) and the pre-trigger can also be adjusted.
The Event display mode can be used for recording rapidly occurring, successive events. 
This allows for recording of up to 40 events per second listed in the order in which they occur along with time stamp, cause of triggering, measured quantity and sampled or rate-of-change measured value.
 
Measurements at Frequency Converters
Modern frequency converters used for controlling electric motor speed usually have a high frequency square-wave output voltage which is pulse-width modulated via motor frequency.
This type of measurement signal requires a special measuring process, by means of which the converter switching frequency is filtered out, and the effective modulation frequency at the motor 
(fundamental frequency) is determined.
• Switching frequency must be greater than 1.2 kHz, and fundamental frequency within a range 
10 to 100 Hz.
• Motor current is acquired in an electrically isolated fashion, e.g. with a clip-on ammeter.

MAVO-FSA Flicker Analysis

The MAVO-FSA function expands the MAVOWATT 45 to include a flicker meter function.
Flicker is defined as the subjective impression made by fluctuations in brightness at lighting appliances caused by fluctuations in the power supply.
 
Fluctuations of this sort can be acquired and evaluated with the help of a flicker meter.
EN 61000-4-15 defines the basic functional principle of a flicker meter, which simulates the complex chain of events which takes place at the lamp, the eye and the brain, and which correlates measurement results to an experimentally determined limit value curve (perceptual limits).
 
Values for the resulting measured quantities, Pst (short-term flicker intensity, 10 min.) and 
Plt (long-term flicker intensity, 2 hours,) are simultaneously determined for all three phase voltages on an individual basis. 
An evaluation of line voltage quality as regards flicker can be carried out in accordance with EN 5016 based upon these measured values.
 
Furthermore, the function also acquires the largest relative voltage fluctuation (dmax) which occurs during the short-term measuring interval, relative constant voltage fluctuation (dc) and, for voltage changes of less than 3%, the maximum deviation duration (dt>3%).
 
These measured quantities are required for type testing for electrical devices per EN 61000-3-3.
Observance of the limit values set forth in this standard is required as of 1 January 2001 for application of the CE mark to electrical and electronic equipment and devices with input current of up to 16 A.

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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