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China, Chinese Low Voltage Feeder Monitoring Device - Monitoring Module1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Meter for ElectricityOther Meters for ElectricityMeasuring DeviceMeasuring Instruments
Nanjing Linkelec Technology Co., Ltd.
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Product Description Low voltage feeder monitoring device - monitoring module1.Product profileThe low-voltage feeder monitoring device consists of a communication unit, a power module, and a monitoring unit. The communication unit is generally installed in the distribution cabinet, column mounted JP cabinet, or low-voltage cable branch box. It serves as a data aggregation gateway to achieve upstream communication through carrier modules, communicate with downstream monitoring units through CAN bus, and achieve local maintenance of the system through Bluetooth interface. The number of monitoring units that can be connected is not less than 64; The power module provides DC power, CAN bus, and sampling voltage to the monitoring unit through a cascaded interface. A single power module can be connected to no less than 10 monitoring units; The monitoring unit is connected to an external current transformer to achieve current detection function, connected to the voltage sampling signal output by the power module to achieve voltage detection function, connected to a switch input to achieve station status monitoring, with functions such as topology characteristic signal transmission, characteristic signal analysis, and phase sequence recognition.2.Product specificationsperformance parametersperformance indicatorsaccuracy classVoltage: ≤±0.5%.Current: ≤±0.5%;Active power: ≤±1%; reactive power: ≤±2%;Power factor: ≤±1%; apparent power: ≤±2%;Power: ≤± 1%; Frequency: ≤± 0.01HzWiring methodThree-phase, four-wireInput currentMeasuring range0~250A , 0~ 400A, 0~600AOperating power supplyRated voltageDC12V, allowable deviation -10%~+20Power consumptionThe monitoring unit consumes no more than 40mA of current when powered by DC12VCommunicationscommunication protocolsDL/T645-2007ResetHardwarePress and hold (>3s) the reset button for hardware reset, theSoftwaresoftware remote resetenvironmental conditionsambient temperature, humidityTemperature range: -40~+70°CMaximum rate of temperature change: 1.0°C/minRelative humidity: 10 to 100%Maximum absolute humidity: 35g/m3the environment in which it is usedfree from explosive hazards, corrosive gases and conductive dust, the presence of severe mold, and sources of severe vibration and shockstorage temperature -40oC~80oCclock accuracyDaily errorThe monitoring unit and the communication unit in the low-voltage feeder monitoring device shall realize high-precision timing, and the timing accuracy shall be not less than 20ms, and can receive the clock calling and timing commands from the upstream equipment3.Selection specificationsfunction moduleSerial numberfunction pointfunction point descriptionsThe monitoring modulereal-time measurements1phase voltagePhase voltages: Ua, Ub, Uc√2line voltageLine voltage: Uab, Ubc, Uca√3phase currentsPhase currents: Ia, Ib, Ic√4Active powerActive power: Pa, Pb, Pc, P√5Reactive powerReactive power: Qa, Qb, Qc, Q√6apparent powerApparent power: Sa, Sb, Sc, S√7Power factorPower factor: Pfa, Pfb, Pfc, Pf√8PhaseVoltage/current: ∠Ua, ∠Ub, ∠Uc√9FrequencySystem frequency: F√Electricity metering10Active ElectricitySplit-phase and combined-phase bi-directional active energy√11reactive power metersSplit-phase and combined-phase bi-directional reactive energy√12The view is in the electric degreeSplit-phase and combined-phase visual energy√Freeze13load recordsRecorded every 5 minutes for 7 days, with cyclic coverage that√Clock14ClockWith hardware precision clock√Current transformers15Supporting external current transformersEquipped with 250A/50mA, 400A/80mA, 600A/120mA transformers√phase sequence identification16With its own positive phase sequence, reverse phase sequence monitoring and phase sequence recognition function√topology identification17with hardware topology recognition, injection and acquisition of characteristic signals from B-phase loops√data logging18All volumes should be stored locally for a period of not less than 7 days√Telemetry19Incoming and outgoingWith 2-way open-in telemetry status√communication interface20debugging interfaceSupport 1 RS485 interface for product debugging√Note: "√" indicates that this function is standard, "○" indicates that this function is optional 4.Product installation and schematic diagram5.About our service * We could provide 7* 24-hour phone call after-sales service. * We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.* Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.6.Package and ship
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