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Amprobe® Test Tools
Data Sheet
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DM-III MULTITEST
Power Quality Recorder
Amprobe’s full-featured Three-Phase Power Quality Recorders
provide the essential functions and capabilities required to
operate accurately and effectively in today’s demanding
electrical environments.
POWER QUALITY ANALYZER/DATA LOGGER ■
True RMS (TRMS) −
Measures & Records Broad Spectrum of Power Quality −
Parameters
AC Current•
AC Voltage to 600 V•
Sags and Surges•
Harmonics•
Active, Reactive and Apparent•
Power•
Peak Demand•
Power Factor•
Frequency•
Phase Sequence•
Compatible with wide range of current transducers −
Works with single and three phase −
Detects & records Sags and Surges −
Displacement power factor for power factor correction −
determination
Built in scope displays waveforms −
Phase sequence indication −
Records up to 64 parameters −
Selectable fundamental frequency −
Special data compression system −
Download capabilities, Windows compatible −
A complete kit: 1000A Clamp, Voltage Leads, Ground Probes −
& Leads, PC software & cable
600V
continued on next page
Amprobe® Test Tools
Data Sheet
INSULATION TESTER FUNCTIONS: ■
Tests insulation integrity of wires, cables, transformers & −
electrical motors
Selectable test voltages up to 1000 V −
Programmable timer to perform the Dielectric Absorption Ratio −
Test
Sensitive Ohmmeter for checking resistance of motor windings −
Selectable polarization of ohmmeter for checking grounding −
continuity
Automatic voltmeter protects against misuse on hazardous −
energized systems
GROUND RESISTANCE & RESISTIVITY FUNCTIONS: ■
Three measuring modes: −
2 point continuity/resistance test•
3 point Fall of Potential test•
4 point Earth Resistivity measurement•
Automatic voltage measurement prevents false measurements −
Automatically applies three testing frequencies for the most −
accurate readings
Detects faulty test conditions such as poor soil conditions and −
input noise
PHASE SEQUENCE ■
Phase sequence indication −
Frequency measurement −
Phase-to-Phase voltage measurement −
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Data Sheet
DM-III MULTITEST Power Quality Recorder
Specifications
Supplied Current Transducer DM-CT-DMA; 1000A Standard CT, 2” internal diameter CT
Input accuracy ±(0.5% Rdg + 2 LSD)
AC Current DM-CT-100: 0.5A to 100A
DM-CT-HTA: 5 – 1000A
AM-FLEX33: Selectable: 5 – 1000A or 15 – 3000A
AC Voltage including
Sags and Surges 0 – 600V
Harmonics THD, DC and individual up to 49th
Power Working (W), Reactive (VAR) and Apparent (VA) ±(1.0% Rdg + 2 LSD)
Energy Working (kWh), Reactive (VARh) and Apparent (VAh) ±(1.0% Rdg + 2 LSD)
Peak Demand KW ±(1.0% Rdg + 2 LSD)
Power Factor 0.00 – 1.00
Frequency measurement 57 to 63.6 Hz at 60Hz fundamental; 47 to 53 Hz at 50Hz fundamental; ±(1.0% Rdg + 2 LSD)
Phase sequence 1 - 2 - 3
Co-generation Computes incoming and outgoing energy
Selectable Fundamental
Frequencies 50/60 Hz
Available Recording Time Several hours to several years depending on setup
Megohmmeter Range Accuracy
Insulation resistance with
50 VDC test voltage 0.01 – 19.99, 49.9 ± (2% Reading + 2 digits)
49.9 – 99.9MΩ ± (5% Reading + 2 digits)
Insulation resistance with
100 VDC test voltage 0.01 – 19.99, 99.9 ± (2% Reading + 2 digits)
99.9 – 199.9MΩ ± (5% Reading + 2 digits)
Insulation resistance with
250 VDC test voltage 0.01 – 19.99, 199.9, 249 ± (2% Reading + 2 digits)
249 – 499 MΩ ± (5% Reading + 2 digits)
Insulation resistance with
500 VDC test voltage 0.01 – 19.99, 199.9, 499 ± (2% Reading + 2 digits)
499 – 999 MΩ ± (5% Reading + 2 digits)
Insulation resistance with
1000 VDC test voltage 0.01 – 19.99, 199.9, 999 ± (2% Reading + 2 digits)
999 – 1999 MΩ ± (5% Reading + 2 digits)
Low Resistance (without timer) 0.01 – 19.99, 99.9Ω ± (2% Reading + 2 digits)
Low Resistance (with timer) 0.01 – 9.99Ω ± (2% Reading + 2 digits)
Ground Resistance Range Accuracy
Ground resistance 0 – 19.99, 199.9, 1999 Ω ± (5% Reading + 3 digits)
Ground resistivity 0.6 – 125.6 Ωm ± (5% Reading + 3 digits)
0.125 – 1.256, 19.99, 199.9 kΩm ± (5% Reading + 3 digits)
LowΩ: 200mA Continuity Test (AUTO, RT+, RT- Mode)
Range [Ω] Resolution [Ω] Accuracy(*)
0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 99.9 0.1 ±(2% Reading + 2 digit)
(*) After Test leads calibration
Test Current > 200mA DC per R≤5Ω (Test leads included)
Resolution for Test current 1mA
Open Circuit Voltage 4V ≤ V0 ≤ 24V
Amprobe® Test Tools
Data Sheet
DM-III MULTITEST Power Quality Recorder
Specifications (continued)
Insulation Test
Test Voltage [V] Range [MΩ] Resolution [MΩ] Accuracy
50 0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 49.9 0.1 ±(2% Reading + 2 digit)
50.0 – 99.9 0.1 ±(5% Reading + 2 digit)
100 0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 99.9 0.1 ±(2% Reading + 2 digit)
100.0 – 199.9 0.1 ±(5% Reading + 2 digit)
250 0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 199.9 0.1 ±(2% Reading + 2 digit)
200 – 249 1 ±(2% Reading + 2 digit)
250 – 499 1 ±(5% Reading + 2 digit)
500 0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 199.9 0.1 ±(2% Reading + 2 digit)
200 – 499 1 ±(2% Reading + 2 digit)
500 – 999 1 ±(5% Reading + 2 digit)
1000 0.01 – 9.99 0.01 ±(2% Reading + 2 digit)
10.0 – 199.9 0.1 ±(2% Reading + 2 digit)
200 – 999 1 ±(2% Reading + 2 digit)
1000 – 1999 1 ±(5% Reading + 2 digit)
Open circuit Test Voltage <1.3 x Nominal Test Voltage
Short Circuit Current <6.0mA with 500V Test Voltage
Nominal Test Current 500V: >2.2mA with 230kΩ;
other: >1mA with 1kΩ*Vnom
Frequency Measurement
Range [Hz] Resolution [Hz] Accuracy
47.0 – 63.6 0.1 ±(0.1%Reading+1 digit)
RCD and LOOP function are active only for 50Hz ± 0.5Hz frequency
Phase Rotation: Voltage Measurement
Range [V] Resolution [V] Accuracy
0 – 460V 1 ±(3%Reading + 2 digit)
Ground Test: Resistance Measurement With Earth Rods
Range RE [Ω] Resolution [Ω]
0.01 – 19.99 0.01
20.0 – 199.9 0.1
200 - 1999 1
Accuracy ±(5% Reading + 3 digit)
Test Current <10mA – 77.5Hz
Open circuit Test Voltage <20V RM
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Data Sheet
DM-III MULTITEST Power Quality Recorder
Specifications (continued)
Ground Test: Resistivity Measurement
Range p Resolution
0.60 – 19.99 Ωm 0.01 Ωm
20.0 – 199.9Ωm 0.1Ωm
200 – 1999Ωm 1 Ωm
2.00 – 99.99kΩm 0.01 kΩm
100.0 – 125.6kΩm(*) 0.1 kΩm
(*) setting distance = 10m
Accuracy ±(5% Reading + 3 digit)
Test Current <10mA – 77.5Hz
Open circuit Test Voltage <20V RMS
Voltage Measurement – (Autorange)
Range [V] Resolution [V]
15 – 310V 0.2V
310 – 600V 0.4V
Accuracy ±(0.5% Reading+2digit)
Voltage Sag And Surge Detection – (Manual Range)
Range [V] Resolution (Voltage)
15 – 310V 0.2V
30 – 600V 0.4V
Resolution (Time) 10ms (_ period)
Accuracy (Voltage) ±(1.0% Reading+2digit)
Accuracy (Rif. 50hz) (Time) 10ms (_ period)
Input Impedance 300kΩ (Phase-Neutral); 300kΩ (Phase-Phase)
Current Measurement – STD & FlexEXTclamps
Range [V] Resolution [Mv]
0.005 – 0.26V 0.1
0.26 – 1V 0.4
(*): Example: with a 1000A/1V full scale clamp, the instrument detect only current higher than 5A
Accuracy ±(0.5% Reading+2digit)
Input Impedance 200kΩ
Overload Protection 5V
Current Measurement – FlexINT clamp – 1000A Range
Current Range Input Voltage Range Resolution Accuracy
5.00 – 20.00A 425µV – 1.7mV 0.850µV ± (4.0%rdg + 8.5µV)
20.00 – 99.99A 1.7mV – 8.499mV 0.850µV ± (1.0% rdg + 8.5µV)
100.0 – 999.9A 8.5mV – 84.99mV 8.5µV ± (1.0% rdg + 85µV)
Input Impedance 9.166kΩ
Overload Protection 5V
Amprobe® Test Tools
Data Sheet
DM-III MULTITEST Power Quality Recorder
Specifications (continued)
Current Measurement – FlexINT clamp – 3000A Range
Current Range Input Voltage Range Resolution Accuracy
15.00 – 99.99A 1.27mV – 8.499mV 0.850µV ± (1.0% rdg + 8.5µV)
100.0 – 270.0A 8.5mV – 22.75mV 8.5µV ± (1.0% rdg + 42.5uV
270.0 – 999.9A 22.75mV – 84.99mV 8.5µV ± (1.0% rdg + 85uV)
1.00 – 3.00kA 85mV – 255mV 850µV ± (0.5% rdg + 8.5mV)
Input Impedance 9.7kΩ
Overload Protection 5V
Power Measurement – (Autorange)
Quantity Range Resolution
Active Power 0 – 999.9W 0.1W
1 – 999.9kW 0.1kW
1 – 999.9MW 0.1MW
1000 – 9999MW 1MW
Reactive Power 0 – 999.9VAR 0.1VAR
1 – 999.9kVAR 0.1kVAR
1 – 999.9MVAR 0.1MVAR
1000 – 9999MVAR 1MVAR
Apparent Power 0 – 999.9VA, 0.1VA
1 – 999.9kVA, 0.1kVA
1 – 999.9MVA 0.1MVA
1000 – 9999MVA 1MVA
Active Energy (Classe2 EN61036) 0 – 999.9Wh, 0.1Wh
1 – 999.9kWh, 0.1kWh
1 – 999.9MWh 0.1MWh
1000 – 9999MWh 1MWh
Reactive Energy (Classe3 IEC1268) 0 – 999.9VARh, 0.1VARh
1 – 999.9kVARh, 0.1kVARh
1 – 999.9MVARh 0.1MVARh
1000 – 9999MVARh 1MVARh
Accuracy ±(1.0%Reading+2digit)
Cos j Measurement
Cos J Accuracy [°]
1.00 – 0.80 0.6
0.80 - 0.50 0.7
0.50 – 0.20 1.0
Resolution 0.01
Voltage and Current Harmonics Measurement
Range Accuracy
DC – 25H ±(5% + 2 digit)
26H – 33H ±(10% + 2 digit)
34H – 49H ±(15% + 2 digit)
Resolution 0.1V / 0.1A
Harmonics values are null under fixed threshold:
- DC: its values is null if it is < 2%of Fundamental or is <2% of Full Scale clamp
- 1st Current Harmonic: its values is null if it is < 0.2% Full Scale clamp
- 2nd – 49th: its values is null if it is < 0.5% of fundamental or is < 0.1% of Full Scale clamp
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Data Sheet
DM-III MULTITEST Power Quality Recorder
Technical Data – General Information
General
Safety EN 61010-1 + A2 (1997)
Protection Classification Class 2 - Double Insulation
Pollution Degree 2
Degree of Protection IP50
Over-Voltage Category CAT II 600V
Usage Indoor; max height 2000m
EMC EN61326-1 (1997) + A1 (1998)
The Instrument complies with European Guidelines for CE mark
Safety Test
Low½ (200mA) IEC 61557-4
Insulation Test IEC 61557-2
Phase Sequence IEC 61557-7
Ground Test IEC 61557-5
Power Quality
Voltage Sag and Surge EN50160
Alternating Current Static Watt-hour meters for Active Energy EN61036 (CLASS 2)
Alternating Current Static VAR-hour Meters for Reactive Energy IEC1268 (CLASS 3)
General Specifications
Mechanical Data
Dimensions 225 (L)x165 (W) x 105 (H)mm
Weight 1,2Kg approx
Power Supply 6 x 1.5-LR6-AA-AM3-MN 1500 batteries
Battery Life
Low½ ~ 800 test
Insulation Test ~ 500 test
Ground Test ~ 1000 test
Phase Sequence ~ 1000 test
Power Quality (recording) ~20 hours
External Power Supply Adapter Code DMT-EXTPS (only for POWER QUALITY function)
Display
Display Type Graphic with Backlight
Resolution 128x128
Visible Area 73mmx73mm
Memory
Safety Test Memory 999 measurement
Power Quality 2MByte (with 63 channels select and Integration Period = 15min -> more than 30 days).
Environment
Reference Temperature 23° ± 5°C
Working Temperature Range 0° – 40°C
Working Humidity < 80%
Storage Humidity Range -10 – 60°C
Storage Humidity < 80%
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Amprobe® Test Tools
Data Sheet
Optional Accessories
AM-FLEX33 3000A Flexible CT
DM-CT-100 100A Compact Clamp (0.5A to 100A)
RS-USB USB-RS-232 Adapter
CC-DM-III Hard Case
Replacement Parts (supplied with product)
DM-CT-HTA 1000A Clamp
HW1254A Soft Carrying case
DMT-EXTPS External power supply 12VDC
MTL-VOLT Complete set of voltage and megohmmeter
test leads and alligator clips
MTL-EARTH Carrying case containing: 4 earth rods and 4
test leads (banana – alligator clip)
C-2001 Special RS-232 Computer Cable
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©2009 Amprobe Test Tools. All rights reserved.
04/2009 3465330 Rev A
Amprobe® Test Tools Europe
Amprobe Test Tools Europe
Beha-Amprobe GmbH
In den Engematten 14
79286 Glottertal, Germany
Tel.: +49 (0) 7684 8009 - 0
Amprobe® Test Tools
website: www.Amprobe.com
email: info@amprobe.com
Everett, WA 98203
Tel: 877-AMPROBE
Includes Amprobe's Download Suite Software
