Product Introduction
DZ-4E HandheldPower 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 ★---------
◆ Adopting high-performance dual core CPU, ARM data acquisition board and 32-bit floating point digital signal processor (DSP) as the core
Modular structure, reasonable design, and reliable operation.
◆ Full Chinese interface, user-friendly design - easy to operate and use
◆ Adopting high-resolution 5.7 inch true color LCD display screen, the graphics display is clearer and more delicate, and the same screen can display multiple sets of parameters
◆ 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 512 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, which can store historical data for more than a year without loss upon power failure
The device is equipped with built-in WiFi and a communication rate of up to 100Mbps. It is also equipped with a USB communication interface to directly store test data on a USB drive
◆ Built in 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
---------★ Main functions ★-----------
◆ Steady state seamless power quality monitoring analysis: harmonics (2-65 times), inter harmonics, phase angles of harmonics and inter harmonics, 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, short-term voltage interruption, temporary overvoltage, transient overvoltage
Power analysis: active power, reactive power, apparent power, power factor
Event triggering 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: The instrument panel is equipped with a 5.7 inch color LCD screen, which displays real-time data, waveform, spectrum, and vector maps of various indicators of power quality
◆ Recording: 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 10 to 60 seconds can be set arbitrarily, and a set of data stored in 60 seconds can save 365 days of historical data without losing power.
◆ Statistical function: The instrument has online statistical function for main monitoring indicators, which can count the maximum, minimum, average, and other monitoring indicators within 10 seconds, 30 seconds, and 1 minute
◆ Settings: Basic instrument parameters 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: 2-65 times
Voltage measurement range: 10~800V
Current measurement range: 0.01~6A (standard) 10A/500A (optional) 400A/2000A (optional)
Frequency measurement range: 45-55Hz
Power grid frequency error: ≤ 0.01 Hz
Voltage deviation error: ≤ 0.2%
Voltage fluctuation error: ≤ 0.2%
Flash 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 the battery: ≤ 6 hours
◆ Charging power supply: AC220V, frequency 45-55Hz
---------★ Executive standards ★---------
◆ GB/T 19862-2016 General Requirements for Power Quality Monitoring Equipment
◆ GB/T 14549-1993 Power Quality - Harmonics in Public Power Grids
◆ GB/T 12325-2008 Power Quality - Permissible Deviation of Supply Voltage
◆ GB 12326-2008 Power Quality Voltage Fluctuation and Flicker
GB/T 15543-2008 Power Quality - Permissible Unbalance of Three Phase Voltage
◆ GB/T 15945-2008 Power Quality - Permissible Deviation of Power System Frequency
◆ GB/T 24377-2009 Power Quality Interharmonics in Public Power Grids