Power quality monitoring device

Category:AC Power Quality Monitor
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Release date:September 24, 2021
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Detailed introduction

summary

SF DZ-3I seriesAC Power Quality MonitorSuitable for distribution systems, especially for enterprise distribution systems or distributed new energy (photovoltaic, wind power) access points with harsh installation environmentsPower quality monitoring. 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.
Instrument characteristics
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 5.7 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;

Instrument functions

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 (2-50 times), including total harmonic distortion rate of voltage and current, harmonic content, amplitude, phase, active, reactive, etc
Advanced monitoring indicators	Voltage fluctuation, flicker, interharmonics
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-3I
Number of sampling paths	1X3Phase voltage, 1X3 phase current
Voltage measurement range	AC57.7V、100V、220V、380V
Current measurement range	zero point zero five～5A
Frequency measurement range	forty-five～55Hz
Grid frequency error	≤0.01 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 sevenInch 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
weight	About 1.5kg
Installation method	Wall mounted or embedded