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WESCHLER INSTRUMENTS

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<strong>WESCHLER</strong> <strong>INSTRUMENTS</strong>Weschler Digital Power Meters• Measure 17 Electrical Parameters• Use on Single & 3 Phase Systems• Direct Input and Auxiliary Power to 480VAC• RS-485 Modbus Communications• Rugged Metal Case fits Standard ANSI CutoutThe MD3000 is a complete power metering system in a rugged steelswitchboard case. Scroll the two front panel buttons to read voltage,current, power, demand and other system parameters. Use the MD3000 tomonitor distribution feeders, branch circuits, generator sets, UPS systemsand other power circuits. It easily retrofits into existing control panels with astandard ANSI 4" hole pattern. Windows PC software allows remote setupand readings through the Modbus communications port. Options includeauxiliary AC or DC power and pulse output.MD3000▲NEWParameters Measured• Phase to Phase Voltage (V)• Phase to Neutral Voltage (V)• Phase Current (A)• Frequency (Hz)• Active Power (W)• Apparent Power (VA)• Reactive Power (VAr)• Power Factor (PF)• Instantaneous Demand: Amps, Active Power, Apparent Power• Maximum Demand: Amps, Active Power, Apparent Power• Total Harmonic Distortion: Phase Volts & Amps• Energy (Wh, VAh, VArh)ORDERING INFORMATIONTo Order—Insert Number Code for Each Letter to Select Catalog Number.Example MD3000 - 33156A1MD3000 — A B C D E FA Phase / Wire12 Single phase, 2 wire (1 element)13 Single phase, 3 wire (2 element)33 3 phase, 3 wire (2 element)34 3 phase, 4 wire (3 element)B Input Voltage1 120V AC (line-neutral)2 240V AC (line-line)3 277V AC (line-neutral)4 480V AC (line-line)C Input Current1 1A AC5 5A ACD Frequency5 50Hz6 60HzE Auxiliary (Meter) PowerA1120V ACA2240V ACA3277V ACA4480V ACD112V DCD224V DCD3125V DCF OptionsPPulse outputRRS-232 data streaming only (replaces RS-485)Most popular configurations shown in bold.Not all combinations available.SPECIFICATIONSVoltage Input 120, 240, 277 or 480 VAC nominalRange 20-120%Burden0.5VA per phaseOverloadContinuous 1.5x nominal, 4x for 1 secondCurrent Input 1A or 5ARange 4-120%OverloadContinuous 4x nominal, 50x for 1 secondFrequency50 or 60 Hz ±5HzAccuracyVolts & Amps 0.5% of reading ±2 digitsFrequency 0.1Hz ±1 digitActive Power 1% of reading ±2 digitsReactive Power 1% of reading ±2 digitsApparent Power 1% of reading ±2 digitsPower Factor 2% of rangeEnergy IEC 1036 class 1THD1% of rangeAuxiliary PowerAC 120, 240, 277, 480 VAC ±15%45-65Hz, burden

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