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• 
  Heilongjiang handheld power quality analyzer

  Product Introduction
  DZ-4E Handheld 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. At the same time, it is equipped with dedicated power quality monitoring and analysis software to conduct in-depth analysis of the measurement data uploaded to the computer, and output 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

  
• 
  Heilongjiang Power Quality Monitor

  Product Overview
  The SF DZ-3 power quality monitoring instrument can be applied to the monitoring and analysis of power quality in substations of various voltage levels in the power system, as well as in the power supply and distribution systems of industrial and mining enterprises. This series of products strictly comply with relevant technical standards issued by the country, and their performance indicators meet the requirements of IEC61000-4-30 A-level instrument performance. At the same time, they meet the requirements of the latest national standard for power quality for measuring various indicators.

  Product Features
  ◆ Adopting high-performance embedded industrial control boards and TI's 32-bit DSP as the core, with data processing capabilities, logic, and control capabilities, the core hardware is at the advanced level in China;
  Adopting a multi CPU structure, each channel has a unique 32-bit DSP, ensuring real-time and accurate power quality data;
  ◆ Industrial grade DOM storage, using compression algorithms, data can be saved for more than a year, and real-time data is not lost when powered down;
  ◆ Adopting GPS synchronous sampling technology to ensure synchronous sampling of monitoring devices within the same substation or different substations;
  ◆ Data sampling: Each channel has a unique 16 bit parallel A/D, and all channels are fully synchronized for sampling, resulting in higher accuracy and faster speed;
  ◆ Adopting hardware phase-locked loop technology and automatic frequency tracking to prevent the impact of frequency changes on monitoring indicators in the power system and prevent frequency "leakage";
  ◆ Adopting a 5.7 inch large screen color LCD display, using an embedded operating system as the software platform, all software is programmed using VC++high-level language, ensuring high reliability and portability of the system;
  ◆ Microcomputer protection with back plug structure, channel expansion board supporting hot swapping, and simple installation;
  Product Features

  Basic monitoring quantity	Effective values of frequency, voltage, current, total active and reactive power, power factor
  Basic monitoring indicators	Grid frequency, effective value of voltage/current, total active/reactive/power factor, effective value of three-phase fundamental voltage/current, phase of fundamental voltage/current, fundamental power/power factor, voltage deviation, frequency deviation, three-phase voltage imbalance, three-phase current imbalance, negative sequence component, harmonic (2-63 times), including total harmonic distortion rate of voltage and current, harmonic content, amplitude, phase angle, harmonic active Harmonic reactive power, harmonic apparent power, etc
  Advanced monitoring indicators	Voltage fluctuations, flicker, interharmonics, subharmonics, voltage surges, voltage dips, overvoltage, undervoltage, short-term interruptions.
  Other functions	Parameter setting function Record storage function GPS time synchronization function, using GPS B code time synchronization method; System timing. Power loss alarm function

  Technical indicators

  technical specifications	Parameter indicators
  Manufacturer	Baoding Fangchang Electric Power Technology Co., Ltd
  Equipment model	SF DZ-3
  Number of sampling paths	1X3Phase voltage, 1X3 phase current
  Voltage measurement range	AC10～400V
  Current measurement range	zero point zero five～5A
  Frequency measurement range	forty-two point five～60Hz
  Grid frequency error	≤0.002 Hz
  Voltage deviation error	≤ 0.2%
  Voltage fluctuation error	≤ 0.2%
  Flicker error	≤ 5%
  Error in three-phase voltage imbalance	≤ 0.2%
  Harmonic measurement error	Meet the requirements of national standard A-level instruments
  Interharmonic measurement error	Meet the requirements of national standard A-level instruments
  Power error	≤ 0.5%
  Display screen	five point sixInch TFT color LCD screen
  Working power supply	AC220V± 20% frequency 45Hz~55Hz DC110V/220V±20%
  Communication interface; Communication protocol	Support RS232/RS485/Ethernet port; Supports ModBus RTU and IEC60870-5-103 communication protocols
  power dissipation	<20W
  Working temperature/humidity	Working temperature -20 ℃~+60 ℃, humidity 5%~95% (non condensing)
  size	1/2 19" 6UBackplug chassis; 19 "4U back plug-in chassis
  weight	About 2kg
  Installation method	Embedded

  
  

  
• 
  Heilongjiang Power Quality Monitor

  Product Overview

  On the basis of fully inheriting the successful experience of our company's previous generation products, the SF DZ-3 power quality monitoring instrument adopts a new high-performance multi-core platform and embedded operating system to seamlessly monitor and analyze all power quality parameters, while achieving recording of power quality exceeding standards. While monitoring power quality, it is possible to analyze and process measurement data at any time period. Meet the requirements of the latest national standard for power quality for measuring various indicators.

  The SF DZ-3 power quality monitoring instrument has achieved the IEC61000-4-30 A-level standard in clock synchronization, event recording, standardization of measurement methods for various power quality index parameters, and measurement accuracy of index parameters.
  The SF DZ-3 power quality monitoring instrument can meet the requirements of power quality monitoring at various voltage levels and types of monitoring points from 220V to 500KV. The device is also suitable for various wiring methods such as three-phase three wire, three-phase four wire, and two CT.

  Product Features
  ◆ Embedded hardware structure platform: Adopting high-performance dual core CPU, ARM core board+32 bit floating point digital signal processor (DSP) as the core of power quality analysis, with reasonable and dispersed functions, compact structure, and easy expansion, achieving high-performance, high reliability, and fan free integrated industrial grade design for the entire machine, which can operate continuously on the network for a long time.

  ◆ Advanced and reliable software platform: LINUX embedded operating system is used as the software platform, and all software is programmed in C++high-level language, ensuring high reliability and portability of the system.

  ◆ High precision data acquisition system: The DSP data acquisition part adopts a 16 bit high-speed A/D converter with synchronous sampling, which has high acquisition accuracy and meets the requirements of the national standard A for power quality monitoring indicators.

  ◆ Equipped with a color LCD display for on-site real-time displayData, waveform, spectrum, and vector plots of various indicators of power quality.

  ◆ Equipped with high-performance solid-state drives to replace traditional mechanical hard drives greatly improves the security and stability of data storage.

  ◆ The phase-locked loop technology, which combines software and hardware, is used to automatically track frequency, preventing the impact of frequency changes on monitoring indicators in the power system and preventing frequency "leakage".

  ◆ The core hardware adopts four layer printed circuit board (PCB) process and SMT process, with hardware reliability and electromagnetic compatibility reaching advanced domestic levels, meeting the EMC requirements of national standards for power quality monitoring instruments.

  ◆ Powerful communication interface: The instrument is equipped with one 100Mbps industrial Ethernet port, two USB communication interfaces, and two RS485 serial ports, allowing for multiple communication methods to interact with remote management centers.

  ◆ Adopting a plug-in structure, modular design, good interchangeability, flexible insertion and removal, and convenient maintenance.

  ◆ Easy to install, it can be centrally installed on the control room screen cabinet or dispersed on the switch cabinet.

  Product Features
  

  Basic monitoring quantity	Effective values of frequency, voltage, current, total active and reactive power, power factor
  Basic monitoring indicators	Grid frequency, effective value of voltage/current, total active/reactive/power factor, effective value of three-phase fundamental voltage/current, phase of fundamental voltage/current, fundamental power/power factor, voltage deviation, frequency deviation, three-phase voltage imbalance, three-phase current imbalance, negative sequence component, harmonic (2-63 times), including total harmonic distortion rate of voltage and current, harmonic content, amplitude, phase angle, harmonic active Harmonic reactive power, harmonic apparent power, etc
  Advanced monitoring indicators	Voltage fluctuation, flicker, overvoltage, undervoltage, voltage surge, voltage drop, short-term interruption
  Other functions	Parameter setting function Record storage function Online statistical function GPS time synchronization function, using GPS B code time synchronization method; System timing. Power loss alarm function

  Technical indicators

  technical specifications	Parameter indicators
  Manufacturer	Baoding Fangchang Electric Power Technology Co., Ltd
  Equipment model	SF DZ-3
  Number of sampling paths	1X3 phase voltage, 1X3 phase current
  Voltage measurement range	AC10～400V
  Current measurement range	0.05～6A
  Frequency measurement range	45～55Hz
  Frequency tolerance error	Grade A; ≤ ± 0.01 Hz
  Voltage tolerance error	Grade A; ≤ ± 0.1%
  Flicker tolerance	Grade A; ≤ ± 5%
  Allowable error of three-phase voltage negative sequence imbalance	Grade A; ≤ ± 0.15%
  Allowable error of three-phase current imbalance	Grade A; ≤ ± 1%
  Harmonic allowable error	A-level
  Allowable error of inter harmonic	A-level
  Measurement error of temporary rise, fall, and short-term interruption time	Grade A; ≤ ± 20ms
  Measurement error of temporary rise, drop, and short-term interruption amplitude	Grade A; ≤ ± 0.2%
  Display screen	5.6 inch TFT color LCD screen
  Working power supply	AC220V± 20% frequency 45Hz~55Hz DC110V/220V±20%
  Communication interface; Communication protocol	Supports RS232/RS485/Ethernet port Supports IEC61850, ModBus RTU, IEC60870-05-103 communication protocolsIEC60870-05-104 communication protocol
  power dissipation	<20W
  Working temperature/humidity	Working temperature -20 ℃~+60 ℃, humidity 5%~95% (non condensing)
  size	290x155x220mm
  weight	About 3kg
  Installation method	Embedded

  
  

  
• 
  Heilongjiang Power Quality Monitor

  Product Overview
  The SF DZ-3 power quality monitoring instrument is suitable for power quality monitoring systems, especially for enterprise distribution systems with harsh installation environments. The device adopts a newly designed mechanical structure with integrated and compact design, allowing for flexible selection of multiple installation methods to adapt to harsh installation environments. It can meet the requirements of wall mounted installation in the distribution box of enterprise distribution systems, as well as conventional embedded installation.
  Product Features
  Distributed design for more flexible installation.
  ◆ Online monitoring: Adopting DSP technology combined with FFT calculation method can ensure high-precision online monitoring of various parameters in the power grid;
  ◆ Display: Using a 5.6 inch TFT color LCD screen for display;
  ◆ Stability: Adopting a multi-layer circuit board design, with a reasonable overall structure and strong anti-interference ability;
  ◆ Communication interface: Provide RS232 or RS485 communication interface;
  Product Features

  Basic monitoring quantity	Effective values of frequency, voltage, current, total active and reactive power, power factor
  Basic monitoring indicators	Grid frequency, voltage/current effective value, total active/reactive/power factor, three-phase fundamental voltage/current effective value, fundamental voltage/current phase, fundamental power/power factor, voltage deviation, frequency deviation, three-phase voltage imbalance, three-phase current imbalance, negative sequence component, harmonic (2-63 times), including total harmonic distortion rate of voltage and current, harmonic content, amplitude, phase, active, reactive, etc
  Other functions	Parameter setting function Record storage function GPS time synchronization function, using GPS B code time synchronization method; System timing.

  Technical indicators

  technical specifications	Parameter indicators
  Manufacturer	Baoding Fangchang Electric Power Technology Co., Ltd
  Equipment model	SF DZ-3
  Number of sampling paths	1X3Phase voltage, 1X3 phase current
  Voltage measurement range	AC57.7V、100V、220V、380V
  Current measurement range	zero point zero one～6A
  Frequency measurement range	forty-five～55Hz
  Grid frequency error	≤0.002 Hz
  Voltage deviation error	≤ 0.1%
  Error in three-phase voltage imbalance	≤ 0.2%
  Harmonic measurement error	Meet the requirements of national standard A-level instruments
  Power error	≤ 0.5%
  Display screen	five point sixInch TFT color LCD screen
  Working power supply	AC220V± 20% frequency 45Hz~55Hz DC110V±20% 220V±20%
  Communication interface; Communication protocol	Support RS485/Ethernet port; Supports ModBus RTU and IEC60870-05-103 communication protocols、IEC60870-05-one hundred and fourCommunication protocol
  power dissipation	<15W
  Working temperature/humidity	Working temperature -20 ℃~+60 ℃, humidity 5%~95% (non condensing)
  size	168x168x145mm back plug-in chassis
  weight	About 1kg
  Installation method	Wall mounted or embedded

  
  

  
  

  
• 
  Heilongjiang portable power quality analyzer

       Product Introduction

  Harmonic pollution in the power grid directly affects the quality of power supply operation and the economic benefits of the power sector.
  SF DZ-4Portable power quality analyzerWe have adopted our company's self-developed new generation instrument hardware and software universal platform. Conduct long-term or short-term online monitoring of grid voltage, current, and power; At the same time, it also has the functions of electrical parameter testing and vector analysis. Adhere to the six national standards for power quality; Evaluate the power quality of the power grid system, analyze various harmonic sources in the power grid, and select appropriate filtering and compensation devices. To develop a plan for purifying harmonic pollution in the power grid and provide reliable detection methods.
  ---------★ Main features ★---------
  ◆ Adopting high-performance dual core CPU, embedded industrial control board and 32-bit floating point digital signal processor (DSP) as the core.

  ◆ Modular structure, reasonable design, and reliable operation.

  ◆ Adopting an 8-inch color LCD display with a fully Chinese interface and user-friendly design, it is easy to operate and convenient to use.

  ◆ Equipped with high-performance solid-state drives to replace traditional mechanical hard drives, meeting the requirements for data storage.

  ◆ The instrument has a USB interface, which can easily copy data directly to the backend management computer.

  ◆ 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: 10~800V
  ◆ Current measurement range: 0.05~6A
  ◆ Frequency measurement range: 42~62Hz
  ◆ Grid frequency error: ≤ 0.01Hz
  ◆ 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