AC Power Quality Monitor

Category:AC Power Quality Monitor
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Release date:March 30, 2022
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Detailed introduction

Product Overview

SF DZ-3AC Power Quality MonitorOn the basis of fully inheriting the successful experience of our company's previous generation products, we have adopted a new high-performance multi-core platform and embedded operating system to seamlessly monitor and analyze all power quality parameters, while achieving waveform recording of power quality exceeding standards. stayPower quality monitoringAt the same time, 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