LNF32 single-phase AC LCD digital ammeter is suitable for measuring
single phase AC current parameters of low voltage distribution
system. It supports programmable transformation ratio, and can be
equipped with communication function to support Modbus-RTU
communication protocol.LNF32 can be widely used in various control
systems, distribution automation system, industrial automation
system and intelligent buildings.Working
environment Working temperature-10°C -- 55°CStorage
temperature-25°C -- 70°CRelative humidity ≤95% RH, no
condensationWorking altitude≤2500mAnti-pollution levelNon-corrosive
gasProtection degreeFront case IP54, rear case
IP20.InsulationBetween signal, power supply, output terminal to
case resistance >100MΩWithstand voltageInput and power supply ≥
2kV, input and output ≥ 2kV, power supply and output ≥
2kVDisplayDisplay methodLCDWorking power supplyRated
rangeAC/DC(80~270)VPower consumption≤5VAWithstand voltageInput and
power supply ≥ 2kV, input and output ≥ 2kV, power supply and output
≥ 2kVCurrent inputRange5A/1AResolution 1 mAImpedance≤20mΩ/
per phasePower consumption≤0.2 VA/ per
phaseOverloadContinuous:1.2InInstantaneous:10In/5sFrequency45 Hz-65
HzCommunication interface Physical interfaceRS-485Communication
speedUp to 9.6 kbps Communication protocolModbus-RTUIsolation
voltage2000 VAC (1 min)EMCElectrostatic discharge immunityIEC
61000-4-2-IIIRadiated, radio-frequency, electromagnetic field
immunityIEC 61000-4-3-IIIElectrical fast transient/burst
immunityIEC 61000-4-4-IVImpact (surge) immunityIEC
61000-4-5-IVImmunity to conducted disturbances, induced by
radio-frequency fieldsIEC 61000-4-6-IIIPower frequency magnetic
field immunityIEC 61000-4-8-IIIVoltage dips, short interruptions
and voltage variations immunityIEC 61000-4-11-III /*
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