CIPDB › China Industry › Instruments & Meters › Meter for Electricity
Intelligent Low-Voltage Motor Protection and Measurement Device1
Meter for ElectricityProtectorLow Voltage Protection
Nanjing Linkelec Technology Co., Ltd.
Preview:
Product Description Intelligent low-voltage protection measurement and control device1.Product profileThe intelligent low-voltage protection and measurement device is a new generation of protection and measurement device developed by our company for various fault characteristics of low-voltage MCC circuit motors. It is suitable for AC380V and AC660V low-voltage systems and is mainly divided into LON531D low-voltage motor protection and measurement device and LON531L low-voltage line protection and measurement device. It is a low-voltage protection and measurement device with extremely high cost-effectiveness, stability and reliability, integrating relay protection, measurement, control, and communication. The protection measurement and control device collects data such as three-phase current, three-phase phase voltage, line voltage, grounding current, etc. These data are calculated and compared with various protection function setting information recorded by the device. When the protection action conditions are met, the relay output is driven to achieve reliable protection of the motor.The intelligent low-voltage protection measurement and control device consists of two parts: the protection measurement and control device host and the MCT current transformer. It can achieve measurement function, protection function, motor start/stop control function, and remote communication function. Using RS485 communication function as an important means of remote management, supporting MODBUS-RTU communication protocol.2.Product specificationsfunction pointfunction point descriptionsmotor protectionline protectionprotection functionsInitiate timeout protection√-overload protection, overcurrent blocking protection, short circuit protection√-Current imbalance protection√√Voltage unbalance protection√√phase failure protection√-ground fault synthesis computational protection√√Leakage protection / ground fault real pick protection (need to be equipped with zero sequence current transformer / grounding current transformer)○○(Either/or)(Either/or)underload protection√-overflow fault (fault current exceeding the breaking capacity of the contactor) trips the circuit breaker√-Over-voltage protection, loss of voltage, under-voltage protection√√frequency protection, under power factor protection, phase sequence protection√-Anti-Shake/Shake Restart○○External interlocks√√tE time protection√-Electrical current interruption protection (low voltage blocking overcurrent section)-√Current-limited quick disconnect protection (low voltage blocking overcurrent II)-√Overcurrent protection (three stages of overcurrent)-√Overload protection-√Spring not storing energy alarm-√PT disconnection alarm-√Temperature protection (PTC/NTC)○-Control loop disconnection alarm-√Negative sequence protection-√under power protection-√phase sequence protection-√inverse time overcurrent-√Three-stage fixed-time overcurrent-√inverse time zero sequence overcurrent-√three-segment time-limited zero-sequence overcurrent-√real-time measurementsthree-phase current, grounding current, three-phase current unbalance ratio√√Leakage current/grounding actual pickup current○○three-phase phase voltage, three-phase line voltage, frequency√√power factor, active power, reactive power, active energy, reactive energy√√zero sequence voltage, positive sequence voltage, negative sequence voltage-√Power quality (including 2nd~63rd harmonics, voltage-current unbalance rate, harmonic distortion rate)√√line fault alarmsloss of voltage, overvoltage, undervoltage, voltage imbalance, voltage reverse order, voltage transient rise/fall√√Loss of current, overcurrent, current breakage, current imbalance, current reverse order√√overload, phase failure, demand overrun√√event loggingLine Fault Alarm, DI Transposition, Closing and Opening Records, up to 100 records√√Fault recording, up to 50 entries√√Motor running hours, stopping hours, number of normal circuit breaker trips, number of fault trips√√switching inputsWith 8-channel DI, built-in power supply, external passive trunk node√√Relay OutputWith 5-way DO, AC 250/10A; DC 30V/10A√√analog outputOptional 1-channel DC4~20mA analog variable output√√digital communications2 RS485 interfaces, support MODBUS-RTU protocol√√undervoltage restartWith the voltage detection function module, it can realize the short-time under and voltage loss restart function√-protection parameter settingsAll kinds of protection fixed value query, adjusting√√system parameterizationParameterization of rated voltage, rated current, and communication address√√LED indicationstart, run, alarm/action, stop√√Online upgradeSupport 485 communication mode upgrade○○Note: "√" indicates that this function is standard, "○" indicates that this function is optional, and "-" indicates that this function is not available 3.Selection specifications performance parametersperformance indicatorsaccuracy classU,I : ±1%,P,Q,PF :±2%,F :±0.1HZ, active energy: level 2, reactive energy: level 2Wiring methodThree-phase, four-wireInput VoltageRated voltage380V 660VACFrequency range 45~65HzMeasuring range10% ~ 120%UePower consumption< 0.3VAInput currentRated current1A,2A,5A,6.3A,10A,25A,30A,50A,100A,200A,400Aoverload capacity2Ie (continuous); 10Ie (10s allowed); 40Ie (1s allowed)Measuring range10% ~ 200%IePower consumption< 0.5VALeakage currentMeasuring range10% ~ 100%IsMeasurement accuracy±1%FSOperating power supplyoperating voltage rangeAC /DC 85~264VPower consumption<9Wanalog outputOutput range4ma ~ 20mamaximum load capacity500RRTDsTemperature range0.1K ~30KTemperature measurement error±2%FSswitching outputsoutput formmechanical contactsMaximum switching voltage250V AC,30VDCMaximum switching current10Avoltage withstand between contact and coil2500Vac rmsswitching inputsInput form Active Wet Node Error ±20%(External 220VAC, 220VDC, 110VDC)Passive trunk node (internal 24VDC)isolation voltage2000Vac rms485 interfaceinterface formHalf-Duplex, Optically Isolatedaddress range1~247communication protocolsModbus-RTUthe communication baud rate2400~19200bps, default 9600bpsenvironmental conditionsOperating Temperature -20oC~60oCstorage temperature -25oC~70oCOperating humidity0 to 85% non-condensingAtmospheric pressure86kPa~106kPaMeasurement performanceelectrical energy accuracyGB/T 17215.321-2021 Class Amechanical propertiesVibrationGB/T 11287 severity class 1ImpactGB/T 14537 Severe Grade 1CollisionGB/T 14537 Severe Grade 1electromagnetic compatibility performanceRadio Frequency Electromagnetic Field Immunity Test GB/T 17626.3-2016 severity level 3Electrical fast transient pulse group test GB/T 17626.4-2018 severity level 3Attenuated oscillatory wave immunity test GB/T 17626.12-2013 severity level 3Surge immunity GB/T 17626.5-2019 severity level 3RF conducted immunity GB/T 17626.6-2017 severity level 3Radio interference GB/T 17215.211-2021 Class B equipmentWork-frequency magnetic field interference degree GB/T 17626.8-2006 severity level 3electrical insulation propertiesinsulation resistanceGBT 13729-2019 , not less than 100MΩmedium strengthGB/T 13729-2019, Industrial frequency voltage 2.5kV, 1 minImpulse voltageGB/T 13729-2019,1.2/50μs,5kV4.Product installation and schematic diagram5.Solution6.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.7.Package and ship
Purchasing Agent
Note: Send your message to supplier or manufacturer.
Welcome to our Professional and comprehensive procurement services...