Product Introduction
SF DZ-4 Power quality analyzerIt is a professional portable instrument for detecting and analyzing the power quality during the operation of the power grid. It can collect and analyze harmonics, inter harmonics, fluctuation flicker, frequency, power, and voltage transients in power grid lines, and can perform short-term or long-term data collection and monitoring. Equipped with dedicated equipment at the same timePower quality monitoringAnalysis software conducts in-depth analysis of measurement data uploaded to the computer, and outputs power quality reports that comply with corresponding national standards.
---------★ Main features ★---------
◆ Full Chinese interface, user-friendly design - easy to operate and use
◆ Adopting high-resolution 8-inch large screen TFT color LCD display
◆ It can accurately measure various electrical parameters such as voltage, current, active power, reactive power, phase angle, power factor, frequency, etc
◆ It can display vector diagrams of the measured voltage and current, and users can analyze the vector diagrams to determine whether the equipment wiring is correct or not
◆ High speed sampling, capable of achieving 256 points/cycle sampling
◆ Can simultaneously display the waveform of three-phase voltage and current signals
◆ It can automatically save test data on a regular basis, and the storage interval can be set according to on-site needs
◆ Built in large capacity memory, data can also be saved using a USB flash drive, and different storage intervals can be set to continuously store data according to the set time intervals
◆ External large capacity, high-performance lithium-ion rechargeable battery, fully charged and continuously working for 6 hours
◆ Small in size, light in weight, and easy to carry, it can be used for on-site measurement or as a standard measuring equipment in the laboratory

---------★major function★-----------
◆Steady state seamless power quality monitoring analysis: harmonic (2-63 times) and interharmonic (0.5-62.5 times), harmonic and interharmonic phase angle, frequency, three-phase imbalance (negative sequence, positive sequence, zero sequence), voltage deviation, voltage fluctuation, and flicker.

◆Transient power quality monitoring analysis: voltage surge, voltage drop, and short-term voltage interruption.

◆Power analysis: active power, reactive power, apparent power, power factor, and electrical quantity recording.

◆Event triggered recording and playback: According to the event triggering conditions (manual or automatic), real-time data before and after event triggering is recorded and saved, and event logs are saved for query.

◆Real time display: equipped on the instrument panel8Inch color LCD screen,Real time display of data, waveform, spectrum, and vector maps for various indicators of power quality.

◆Record: The instrument is equipped with a large capacity solid-state drive, which can save basic and advanced monitoring indicators in real-time. The storage interval of 3-60 seconds can be set arbitrarily, and storing a set of data in 60 seconds can save 20 days of historical data without losing power.

◆Settings: Basic parameters of the instrument can be set, modified, and viewed.

◆Communication: The instrument provides multiple communication interface methods to achieve real-time transmission of monitoring data or timed extraction and storage records. It can communicate with the remote power quality management center through an industrial Ethernet interface, or directly copy the data to the backend management computer through a USB flash drive.
---------★Technical indicators★--------

◆Harmonic analysis range: 2-63 times
◆Voltage measurement range: 10~700V
◆Current measurement range: 0.05~5A (standard) 10A/500A (optional) 400A/2000A (optional)
◆Frequency measurement range: 42~62Hz
◆Grid frequency error: ≤ 0.005 Hz
◆Voltage deviation error: ≤ 0.2%
◆Voltage variation error: ≤ 0.2%
◆Flicker error: ≤ 5%
◆Three-phase voltage imbalance error: ≤ 0.2%
◆Harmonic measurement error: meets the requirements of national standard A-level instruments
◆Interharmonic error: meets the requirements of national standard A-level instruments

◆Phase angle measurement range: 0-359.99 °

◆Maximum working time of battery: ≤ 6 hours

◆Charging power supply: AC220V, frequency 45-55Hz

---------★Executive standards★---------
◆GB/T 19862-2005General requirements for power quality monitoring equipment
◆GB/T 14549-1993Power quality - Harmonics in public power grids
◆GB/T 12325-2008Permissible deviation of power supply voltage for power quality
◆GB 12326-2008Power quality - Voltage fluctuations and flickers
◆GB/T 15543-2008Power quality - Permissible imbalance of three-phase voltage
◆GB/T 15945-2008Power quality - Permissible deviation of power system frequency
◆GB/T 24377-2009Power quality - Harmonics between public power grids