Atec AEMC-3945 User Manual

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

Technical Assistance [phone] www.aemc.com 1 of 13

Three-Phase Power Quality Analyzer
PowerPad

™

Model 3945

Wouldn’t it be nice if you could
look inside your electrical system
and see what’s going on?
Troubleshooting would be so
much easier if you could see the
volts, amps and harmonic content
in real time and take pictures to
document and analyze. Now you
can do just that and more with
AEMC’s PowerPad. The full color
graphical display lets you see and
analyze each signal clearly. Its
high speed sample rate, at 256
samples per cycle, provides
excellent fidelity in reproducing
waveforms and capturing
transients that happen as fast as

62.5µs.

PowerPad’s 4MB of memory is
conveniently partitioned to let you
store four different types of data,
synchronized or independent of
each other. You can store up to
12 screen snapshots, up to
50 captured transients that contain
four cycles for each active input,
and 4096 alarm events. You can
also record trend data for days,
weeks or even months.

Six direct access function buttons
quickly let you see:

Waveforms – Display Volts,
Amps, THD and Crest Factor by
phase or for all phases. You can
display all the voltage inputs on
one screen, phase-to-phase or
phase-to-neutral. Real-time phasor

diagrams can be displayed for
volts and amps, also by phase or
for all phases.

Harmonics – Display Harmonics
out to the 50

th

for Volts, Amps and
VA. Individual Harmonics are
displayed as a percentage and in
real value. Harmonic direction and
sequencing can also be displayed.

Transients – Set, capture and
display transients. You select the
threshold and the number of
transients to capture. PowerPad
then captures four waveforms for
each transient; the triggering
waveform as well as one pre- and
two post-triggered waveforms. As
many as 1200 waveforms can be
captured.

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Categories > Electrical & High Voltage Test Equipment > AC Power-Electrical Meters > Power QualityAnalyzers >
AC Power Quality Analyzers > Handheld Power Meters > Loggers & Recorders

AEMC 3945 Power Quality Analyzer Product Page

How-To Video

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Alarms – Configure, capture and
display up to 4096 alarm events
based on up to ten different trigger
variables. Each captured alarm
event will show the phase, the
variable and the value as well as
the time and duration.

Record – Set up and record trend
data at selectable rates from one
sample/second to one sample
every 15 minutes on as many as
22 different variables for all
phases. See the recorded data on
screen, zoom in and out and scroll
the time axis to analyze the data.

Power & Energy – Display
Watts, VARs and VA by phase
and total. Accumulate totals and
see whether the energy is
inductive or capacitive.

If you’re not convinced yet,
consider these other functions and
features:

• PowerPad uses current probes
that auto configure the
instrument’s current channel for
range and scale.

• PowerPad comes with an online
help system that gives you clear
information about the functions
and buttons for each screen.

• PowerPad comes with all options
and accessories needed to
capture, display, download,
analyze and store data. No add­on accessories are required that
increase your cost. PowerPadis
supplied with AEMC’s DataView

®

Professional graphing/analysis
software package at no

additional cost (a $395.00 value).
The software lets you completely
configure and capture data in
real time on your computer. You
can download all stored data
from PowerPad and print reports
from a library of pre-designed
templates or create your own
custom templates and reports.

In addition to all of this, PowerPad
speaks six different languages. At
the press of a button, information
can be displayed in English,
Spanish, French, Portuguese,
Italian and German.

Arrange for a demonstration today!

Tilt-out bail facilitates bench top operation for convenient viewing of display.

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

Technical Assistance [phone] www.aemc.com 3 of 13

Features

•

True RMS single-, two- and three-phase
measurements at 256 samples/cycle, plus DC

• Real-time color waveforms

• Easy-to-use on-screen setup

• Automatic current probe recognition and scaling

• True RMS voltage and current measurement

• Measures DC volts, amps and power

• Display and capture voltage, current and power

harmonics to 50

th

order, including direction, in real time

• Capture transients down to 1/256

th

of a cycle

• Phasor diagram display

• Peak voltage and current

• Nominal frequency from 40 to 70Hz

• VA, VAR and W per phase and total

• kVAh, VARh and kWh per phase and total

• Neutral current display for three-phase

• Crest factors for current and voltage

• Transformer K-factor display

• Power Factor, displacement PF display

• Captures up to 50 transients

• Short-term flicker display

• Phase unbalance (current and voltage)

• Harmonic Distortion (total andindividual) from 1

st

to 50

th

• Alarms, surges and sags

• Records date and characteristics of disturbances

• Immediate printout directly to a printer

• Screen snapshot function captures waveforms or other

information on the display

• Optically isolated RS-23 communication port

• Includes DataView

®

Professional software for data

storage, analysis and report generation

• EN 61010, 600V Cat. III

Applications

• Verification of power distribution circuits

• Measurement and recording of power system quality

(kW, VA, VAR)

• Energy metering(kV Ah,VARh, kWh)

• In plant troubleshooting of power distribution panels and

individual machinery

• Monitor pad mount transformers

• Determine harmonic problems originating from source or

load

• Monitor phase unbalances

• Determine transformer K-factor

• And much, much more

Power quality analysis on a three-phase panel using the AmpFlex

™

flexible current probes.

Measure all three phases of voltage and current
simultaneously.

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Functional Displays

Display transients that were captured –
each transient consisting of one pre-trig­gered cycle, the triggered cycle and two
post-triggered cycles. All inputs are stored
when a transient is captured. Up to 50
transients can be stored, each consisting
of four cycles and up to six inputs for a
total of 1200 transient waveforms.

Voltage, current and power harmonics can be displayed in real time, in bargraph and text form, and stored in memory.Individual
harmonics can be analyzed by moving the horizontal cursor to that harmonic. Harmonic direction (source-to-load or load-to-source) can
be displayed for power harmonics. Har monic sequencing (negative, zero and positive) can be displayed for volts or amps for all phases.

Transient Mode

Harmonics Mode

Information on screen (real-time or stored
data) can be sent to a printer using the
serial interface by simply pressing the print
button.

You can store up to 12 screen snapshots
simply by pressing the camera button while
the desired information from any of the
instrument’s modes is on the display.Any
of the stored snapshots can be selected
and displayed by selecting it from the list.

PrintingSnapshot Mode

Configuration is simple and straightforward.Simply press the setup button and select the
function you wish to configure.For example, to configure the input, select the desired
hookup from the graphical choices for single-, two- and three-phase.Neutral current is
calculated in the 4-wire hookup.

Configuration

PowerPad’s direct access
system lets you see the
important information you
need at the press of a button.
Quickly review waveforms,
harmonics, transients, alarms
and recorded data on screen.
Setup is straightforward using
a combination of graphic and
text prompts to quickly
configure PowerPad for
the job site.

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Functional Displays

Power and Energy can be displayed by
phase or total, including kW, Watt-hours,
VAR hours, VA and VA hours.The energy
can be totalized and the inductive and
capacitive components are also displayed.

Trend recording from one to 22 variables and from one to six inputs can be programmed, stored and displayed at storage rates between
one second and 15 minutes. Data can be analyzed on screen by moving the horizontal cursor to see MIN, MAX and instantaneous
values as well as time and date.The time axis can be zoomed in or out.Power and energy consumption can also be recorded and
displayed.

Power & Energy Mode

Recording Mode

Real-time waveforms can be displayed for any and all inputs.In RMS, THD and Crest
Factor presentations, Phasor Diagrams can be displayed graphically, showing the phase
relationship as well as actual values for phase-to-phase voltage and current. Percent
unbalance is also displayed.

Waveform Mode Phasor Diagram

Up to 4096 alarm conditions can be
recorded and displayed.Each alarm shows
date, time, function, value and duration
(down to 10ms).

Alarms Mode

Vertical cursor

Battery status

Graph legend

Display choices

Date and time

Function buttons

specific to the

screen in use

Mode

Scale

Graph of real-time data

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Specifications

MODEL 3945

ELECTRICAL

Sampling Frequency 256 samples per cycle
Data Storage 4MB partitioned for waveforms, transients, alarms and trend recording
Voltage (TRMS) Phase-to-Phase: 830V Phase-to-Neutral: 480V
Current (TRMS) MN Clamp: 0 to 6A/120A or 0 to 240A SR Clamp: 0 to 1200A

MR Clamp: 0 to 1200AAC, 0 to 1400ADC AmpFlex™: 0 to 6500A

1

MEASUREMENT RANGE RESOLUTION ACCURACY
Single-Phase RMS Voltages 6 to 480V 0.1V ±0.5% ± 2cts
Phase-to-Phase RMS Voltages 10 to 830V 0.1V ±0.5% ± 2cts
Single-Phase Peak Voltages 6 to 680V 1V ±(1% + 5cts)
Phase-to-Phase Peak Voltages 10 to 1360V 1V ±(1% + 5cts)
Frequency (Hz) 40 to 69Hz 0.01Hz ±0.01Hz
DC Voltage Component 6 to 650V 0.1V ±1% ± 2cts
Current Probes (Arms)

MN Clamp 0 to 240A 0.1A ± (0.5% + 2cts)
SR Clamp 0 to 1200A 0.1A; 1A ≥ 1000A ± (0.5% + 2cts)

AmpFlex™Probe 10 to 6500A 0.1A; 1A ≥ 1000A ± (0.5% + 1A)
Active (Real) Power (kW) 0 to 9999kW 4 digits (10,000ct) ±1% ± 1ct @ PF ≥0.8
Reactive Power (kVAR) 0 to 9999kVAR 4 digits (10,000ct) ±1% ± 1ct @ PF ≤0.8
Apparent Power (kVA) 0 to 9999kVA 4 digits (10,000ct) ±1% ± 1ct
Power Factor (PF & DPF) -1.000 to 1.000 0.001 ±(1.5% + 0.01)
Active Energy (kWh) 0 to 9999MWh 4 digits (10,000ct) ± 1% ± 1ct @ PF ≥0.8
Reactive Energy (kVARh) 0 to 9999MVARh 4 digits (10,000ct) ±1% ± 1ct @ PF ≤0.8
Apparent Energy (kVAh) 0 to 9999MVAh 4 digits (10,000ct) ±1% ± 1ct
Unbalance (V & A) 0 to 100% 0.1% ± 1% ± 1ct
Phase Angle (V–A, A–A, V–V)) -179° to +180° 1° ±2° ± 1ct
Harmonics (1

st

to 50th)
F = 40 to 69Hz 0 to 999% 0.1% ±1% + 5cts
(V ≥ 50V, A > Inom/100)

Total Harmonic Distortion (V & A) 0 to 999% 0.1% ±1% + 5cts
K-factor (Akf) 1 to 99.99 0.01 ±5% ± 1ct
Flicker (PST) 0.00 to 9.99 0.01 –
Power Source 9.6V NiMH rechargeable battery pack

AC supply: 110/230V

AC ±20% (50/60Hz)

Battery Life 6 hrs with display on; ≤96 hrs with display off (record mode)

ENVIRONMENTAL

Operating Temperature 32° to 122°F (0° to 50°C)
Storage Temperature -4° to +122°F (-20° to +50°C)

MECHANICAL

Display 1/4 VGA (320 x 240) color LCD
Dimensions 9.5 x 7 x 2" (240 x 180 x 55mm)
Weight 4.6 lbs (2.1kg)

SAFETY

Safety Rating EN 61010-1, 600V Cat. III, Pollution Degree 2
Double Insulation Yes
CE Mark Yes

1

Crest Factor at 6500A = 1

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Features

Configure all functions of the
PowerPad

™

Model 3945

• Display and analyze real-time data

on your PC

• Configure all PowerPad functions

and parameters from your PC

• Customize views, templates and

reports to your exact needs

• Create and store a complete library

of configurations that can be up­loaded to the PowerPad as needed

• Zoom in and out and pan through

sections of the graph to analyze
the data

• Display waveforms, trend graphs,

harmonic spectrums, text
summaries, transients, event
logs and stored alarms

• Print reports using standard or

custom templates you design

Minimum System
Requirements

• Windows®98/2000/ME/XP or

Windows

®

NT 4.0

• 128MB of RAM

(256MB recommended) for
Windows

®

98/2000/ME or

Windows

®

NT 4.0

256MB of RAM for Windows

®

XP

• 35MB of hard disk space

(200MB recommended)

• CD Rom Drive

DataView®Professional Software

Display waveforms in real time on your computer.

The DataViewProfessional Software

provides a convenient way to configure

and control power analysis tests from your

computer. Through the use of clear and

easy-to-use tabbed dialog boxes, all

PowerPad functions can be configured and

tests can be initiated. Results can be

displayed in real time and stored in your

PC. Reports may be

printed along with

the operator’s

comments and

analysis.

DataViewProfessional is included
with the PowerPad Model 3945.

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Display all harmonics from 1stto 50thin bargraph form for voltage,
current and power.

Display power and energy parameters – both instantaneous
and total.

Display harmonics in a text table from harmonic 0 (DC) through
the 50th.

Clear and easy setup of all functions from one tabbed dialog box. Display real-time waveforms by phase, parameter or total.

Display real-time phasor diagrams.Includes unbalance for both
voltage and current.

Sample Screens

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Reports can be displayed on your

PC and printed. Each report includes

all test results in a tabular and graphic

format, as well as operator and test

site information. Comments typed by

the operator will also be included.

Sample Reports

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Construction

The color-coded input connectors provide dedicated current probe inputs and voltage inputs.

The connections located on the side of the Model 3945 provide optically isolated RS-232

communication port and line power from 85 to 256VAC (50/60Hz).

1/4VGA (320 x 240)

Color LCD

Line power

connector

Hand strap

Current probe

inputs

Current probe

inputs

Six variable

function buttons

Instrument

configuration

button

Snapshot button

Print button

Help button

ON/OFF button

Line power
connector

Voltage inputs

Voltage inputs

Optically coupled
bi-directional
RS-232 port

Optically coupled
bi-directional
RS-232 port

Enter button

Direct display
mode buttons

Dirt resistant
overmold

Cursor movement,
browsing and
selection buttons

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A complete family of current measurement

probes to meet most AC (or DC) measurement

applications up to 6500Arms.

Accessories

Set of three low current color-coded MN193 (6A/120A) current probes

Catalog #2140.14

5A Adapter Box

Catalog #2140.17

Set of three AC/DC color-coded MR193 (1000AAC/1400ADC) current probes

Catalog #2140.13

Set of three color-coded AmpFlex™193-36 (6500A) flexible current probes with 36" sensors

Catalog #2140.12

Set of three color-coded AmpFlex™193-24 (6500A) flexible current probes with 24" sensors

Catalog #2140.11

Set of three color-coded SR193 (1200A) current probes

Catalog #2140.10

Set of three low current color-coded MN93 (240A) current probes

Catalog #2140.09

Max conductor size: 2.05" (52mm)

Measurement range: 3 to 1200A

Max conductor size: 0.78" (20mm)

Measurement ranges: 5mA to 6A

100mA to 120A

Max conductor size: 11.46" (290mm)

Measurement range: 9 to 6500A

Max conductor size: 7.64" (190mm)

Measurement range: 9 to 6500A

Max conductor size: 0.78" (20mm)

Measurement range: 0.5 to 240A

Max conductor size: 1.6" (41mm)

Measurement ranges: 10 to 1000A

AC

10 to 1400ADC

The 5A Adapter Box facilitates the

use of current probes with

current outputs for use with

PowerPad. Ratios are

programmable up to 2999:1 or

2999:5.The Adapter Box works

with single-, two- or three-phase

current inputs.

MN93

SR193

193-24

193-36

MN193

MR193

MR193 probe (black connector) (1000A

AC/1400ADC)

Catalog #2140.28

Max conductor size: 1.6" (41mm)

Measurement ranges: 10 to 1000A

AC

10 to 1400ADC

MR193

Three-Phase Power Quality Analyzer PowerPad™Model 3945 (pdf) Rev. 04 05/05

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Ordering Information

ORDERING INFORMATION CATALOG NO.

PowerPad™Model 3945 w/MN93 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.75

Includes set of three color-coded 240A MN93 probes, four 10 ft color-coded voltage leads, four color-coded alligator
clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord, DataView®Professional Software,
carrying bag, soft carrying pouch and user manual

PowerPad™Model 3945 w/SR193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.76

Includes set of three color-coded 1200A SR193 probes, four 10 ft color-coded voltage leads, four color-coded alligator
clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord, DataView®Professional Software,
carrying bag, soft carrying pouch and user manual

PowerPad™Model 3945 w/24" AmpFlex™193-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.77

Includes set of three color-coded 6500A 24" AmpFlex™193-24 probes, four 10 ft color-coded voltage leads,
four color-coded alligator clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord,
DataView®Professional Software, carrying bag, soft carrying pouch and user manual

PowerPad™Model 3945 w/36" AmpFlex™193-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.78

Includes set of three color-coded 6500A 36" AmpFlex™193-36 probes, four 10 ft color-coded voltage leads,
four color-coded alligator clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord,
DataView®Professional Software, carrying bag, soft carrying pouch and user manual

PowerPad™Model 3945 w/MR193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.79

Includes set of three color-coded 1000AAC/1400ADC MR193 probes, four 10 ft color-coded voltage leads,
four color-coded alligator clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord,
DataView®Professional Software, carrying bag, soft carrying pouch and user manual

PowerPad™Model 3945 w/MN193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2130.80

Includes set of three color-coded 6A/120A MN193 probes, four 10 ft color-coded voltage leads,
four color-coded alligator clips, RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord,
DataView®Professional Software, carrying bag, soft carrying pouch and user manual

Accessories (Optional)

Set of three color-coded MN93 probes (240A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.09

Set of three color-coded SR193 probes (1200A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.10

Set of three color-coded 24" AmpFlex

™

193-24 probes (6500A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.11

Set of three color-coded 36" AmpFlex

™

193-36 probes (6500A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.12

Set of three color-coded MR193 probes (1000A

AC/1400ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.13

Set of three color-coded MN193 probes (6A/120A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.14

5AAdapter box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.17

MR193 probe (black connector) (1000A

AC/1400ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Cat. #2140.28

All models include three color-coded current probes (MN93 example shown),

four color-coded 10 ft voltage leads, four color-coded alligator clips,

RS-232 DB9F optically coupled serial cable, NiMH battery, US 120V power cord,

DataView

®

Professional software, carrying bag, soft carrying pouch and user manual.

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Contact Us

United States & Canada:

Chauvin Arnoux

®

, Inc.

d.b.a. AEMC

®

Instruments
200 Foxborough Blvd.
Foxborough, MA 02035 USA
[phone] • Fax [phone]
www.aemc.com

Customer Support – for placing an order, obtaining price & delivery:

[e-mail]

Sales Department – for general sales information:

[e-mail]

Repair and Calibration Service – for information on repair & calibration, obtaining a user manual:

[e-mail]

Technical and Product Application Support – for technical and application support:

[e-mail]

Webmaster – for information regarding www.aemc.com:

[e-mail]

South America, Central America, Mexico, Caribbean, Australia & New Zealand:

Chauvin Arnoux

®

, Inc.

d.b.a. AEMC

®

Instruments
15 Faraday Drive
Dover, NH 03820 USA
[phone] • Fax [phone]
[e-mail]
www.aemc.com

All other countries:

Chauvin Arnoux SCA
190, rue Championnet
75876 Paris Cedex 18, France
33 1 44 85 45 28 • Fax [phone]
[e-mail]
www.chauvin-arnoux.com