Amprobe DM-III MULTITEST F Data Sheet

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Data Sheet

DM-III MULTITEST F

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: 3000A Flexible CT, 1000A Clamp, Voltage −
Leads, Ground Probes & Leads, PC software & cable

continued on next page 

Amprobe® Test Tools

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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 −

Data Sheet

Amprobe® Test Tools

DM-III MULTITEST F Power Quality Recorder

Data Sheet

Specifications

Supplied Current Transducer AM-FLEX33 3000A Flexible 7” 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 ±(0.5% Rdg + 2 LSD)
Harmonics ±(0.5% Rdg + 2 LSD) @DC to 25 harmonics**
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

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DM-III MULTITEST F 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

Data Sheet

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

Amprobe® Test Tools

DM-III MULTITEST F 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)

Data Sheet

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 9.16 6kΩ
Overload Protection 5V

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DM-III MULTITEST F 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)

Data Sheet

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

Amprobe® Test Tools

DM-III MULTITEST F 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~ / 350V~ (phase –earth); CAT III 600V~ / 300V~ (phase –earth)
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%

Data Sheet

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Includes Amprobe's Download Suite Software

Replacement Parts (supplied with product)

AM-FLEX33 3000A Flexible CT
DM-CT-HTA 1000AClamp
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
www.amprobe.com PC Software
www.amprobe.com Instruction Manual

Data Sheet

Optional Accessories

DM-CT-HTA 1000A Clamp
DM-CT-100 100A Compact Clamp (0.5Ato 100A)
RS-USB USB-RS-232 Adapter
CC-DM-III Hard Case

Amprobe® Test Tools

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email: [e-mail]
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Tel: 877-AMPROBE

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79286 Glottertal, Germany
Tel.: [phone] - 0

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