AEM 3945-B Manual

A SERVICE OF

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8

Power Quality Analyzer Model 3945-B

CHAPTER 2

PRODUCT FEATURES

2.1 Description

The PowerPad

®

Model 3945-B is a three-phase power quality analyzer that is

easy-to-use, compact and shock-resistant. It is intended for technicians and engi-

neers to measure and carry out diagnostic work and power quality work on one,

two or three phase low voltage networks.

Users are able to obtain instant waveforms of an electrical network’s principal char-

acteristics, and also monitor their variation over a period of time. The multi-tasking

measurement system simultaneously handles all the measurement functions and

waveform display of the various magnitudes, detection, continuous recordings and

their display without any constraints.

Features:

• Measurement of TRMS voltages up to 480V (phase-to-neutral) or 830V

(phase-to-phase)fortwo,threeorfour-wiresystems

• Measurement of TRMS currents up to 6500Arms

• Measurement of DC voltage up to 850V

• Measurement of DC current up to 1400ADC (withMR193probe)

• Frequencymeasurement(41to70Hzsystems)

• CalculationofneutralcurrentforWYEcongurations

• Calculation of Crest Factors for current and voltage

• Calculation of the K Factor for transformers

• Calculationofshort-termickerforvoltage

• Calculationofthephaseunbalanceforvoltageandcurrent(3phaseonly)

• Measurementofharmonicanglesandrates(referencedtothefundamental

orRMSvalue)forvoltage,currentorpower,upto50

th

harmonic

• Calculation of overall harmonic distortion factors

• Monitoring of the average value of any parameter, calculated over a period

running from 1 sec to 2 hrs

• Measurement of active, reactive and apparent power per phase and their

respective sum total

• Calculation of power factor, displacement power factor and tangent factor

• Total power from a point in time, chosen by the operator

• Recording,timestampingandcharacterizationofdisturbance(swells,sags

andinterruptions,exceedenceofpowerandharmonicthresholds)

• Detection of transients and recording of associated waveforms