Bitronics M350 User manual
M350 3-Phase Ammeters & Voltmeters
User Manual
September 27, 2017
ML0038 Document Revision M
© 2017 by Bitronics, LLC
ML0038 September 27, 2017 - 2 - Copyright 2017 Bitronics, LLC
ML0038 September 27, 2017 - 3 - Copyright 2017 Bitronics, LLC
TABLE OF CONTENTS
50 SERIES MANUAL SET .............................................................................................................................5
VERSION HISTORY (ABRIDGED) ................................................................................................................5
CERTIFICATION.............................................................................................................................................6
INSTALLATION AND MAINTENANCE .........................................................................................................6
WARRANTY AND ASSISTANCE ..................................................................................................................6
AUTHORIZED REPRESENTATIVE IN THE EUROPEAN UNION................................................................7
COPYRIGHT NOTICE ....................................................................................................................................7
TRADEMARKS...............................................................................................................................................7
SAFETY SECTION.........................................................................................................................................8
Health and safety...........................................................................................................................................8
Explanation of symbols and labels ................................................................................................................8
WARNING: EMISSIONS – CLASS A DEVICE (EN55011) ........................................................................10
DECOMMISSIONING AND DISPOSAL.......................................................................................................10
1.0 DESCRIPTION & SPECIFICATIONS....................................................................................................11
1.1 Introduction...........................................................................................................................................11
1.2 Features................................................................................................................................................11
1.3 Specifications........................................................................................................................................11
1.4 Environment..........................................................................................................................................17
2.0 PHYSICAL CONSTRUCTION & MOUNTING....................................................................................... 20
2.2 Initial Inspection....................................................................................................................................22
2.3 Protective Ground/Earth Connections..................................................................................................22
2.4 Overcurrent Protection..........................................................................................................................22
2.5 Supply/Mains Disconnect .....................................................................................................................22
2.6 Instrument Mounting.............................................................................................................................22
2.7 Cleaning................................................................................................................................................23
3.0 BACK PANEL & WIRING......................................................................................................................24
3.1 Auxiliary Power.....................................................................................................................................25
3.1.1 Specifications (per section 1.3).....................................................................................................25
3.2 M350 V3 VT Inputs – VA, VB, VC, VN (See Appendix A1 and Section 1.3).......................................25
3.3 M350 A3 CT Inputs – IA, IB, IC (See Appendix A1 and section 1.3) .................................................. 25
3.4 Serial Ports (See section 4.2)...............................................................................................................26
3.5 Ethernet ................................................................................................................................................26
3.5.1 Network settings............................................................................................................................26
3.5.2 Indicators – Ethernet (ACT) & Serial LEDs...................................................................................29
3.5.3 Firmware upgrades – Ethernet service port..................................................................................29
4.0 OPERATION..........................................................................................................................................31
4.1 Display..................................................................................................................................................31
4.1.1 Overview – Buttons Functions........................................................................................................35
4.1.2 Keypad Functions for Display Mode...............................................................................................36
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4.1.3 Display Error Messages .................................................................................................................37
4.2 Serial Port.............................................................................................................................................38
4.2.1 RS485 Connections.......................................................................................................................38
5.0 FUNCTIONAL DESCRIPTION..............................................................................................................41
5.1 Configuration .........................................................................................................................................41
5.2 HTML Web Server................................................................................................................................41
5.3 Passwords .............................................................................................................................................41
5.4 Navigating the M350’s setup menu from the front panel......................................................................43
5.5 Performing set-up through the web page interface ..............................................................................46
6.0 MEASUREMENTS.................................................................................................................................60
6.1 Changing Transformer Ratios...............................................................................................................60
6.2 Current (M350 A3)................................................................................................................................60
6.3 Voltage Channels (M350 V3) ...............................................................................................................60
6.4 Demand Measurements .......................................................................................................................61
6.4.1 Ampere Demand (M350 A3) .........................................................................................................62
6.4.2 Volt Demand (M350 V3)................................................................................................................62
6.4.3 Demand Resets.............................................................................................................................62
6.4.4 Demand Interval............................................................................................................................62
6.5 Heartbeat and Health Check ................................................................................................................63
6.6 List of Available Measurements & Settings..........................................................................................63
6.7 Calibration.............................................................................................................................................64
6.8 Instantaneous Measurement Principles ...............................................................................................64
7.0 ANALOG (TRANSDUCER) OUTPUT OPTION ....................................................................................65
7.1 Introduction...........................................................................................................................................65
7.2 Specifications........................................................................................................................................65
7.3 Connections..........................................................................................................................................65
APPENDIX....................................................................................................................................................68
A1 CT/VT Connection Diagrams .................................................................................................................68
A2 Ethernet Troubleshooting......................................................................................................................71
A3 M350 Display Screens – Visual Representations.................................................................................73
ML0038 September 27, 2017 - 5 - Copyright 2017 Bitronics, LLC
50 SERIES MANUAL SET
ML0035 M650 Family User Manual
ML0036 50 Series DNP3 Protocol
ML0037 50 Series Modbus Protocol
ML0038 M350 Family User Manual
ML0039 M651 Family User Manual
ML0040 M653 Family User Manual
VERSION HISTORY (ABRIDGED)
V1.010 2010-03-25 M650M3x51x models with firmware download capability
V1.030 2010-05-14 Add 0-1mA, add per-phase power demands to protocols
V1.040 2010-06-17 Add M350 models, add configurable display screens
V1.050 2010-07-14 Add secondary volts screens, more info to front panel menu
V1.060 2010-07-20 Add support for B3 models
V1.070 2010-08-03 Add support for 1A input and 4-20mA output
V1.090 2010-10-27 Add support for M651 models
V2.010 2011-02-18 Add support for configurable points/registers
V3.000 2011-09-08 Add support for M653 models, split-core CTs, passwords,
DNP3 events/Class 1, 2, 3 Reads, Primary Units
V3.020 2011-09-28 Production support changes
V3.030 2011-12-13 Modbus and DNP serial address settings configurable in
front panel menu; error reporting on front panel display
V3.060 2012-06-19 Changed password default to none
V3.070 2012-08-28 Bug fix
V3.080 2013-06-14 Add support for loss compensation calculation
V3.090 2014-04-24 Bug fix and support for the change to alphanumeric display
on the M350
V3.10 2015-08-31 Bug fix for matching baud rate of display
V3.11 2016-01-06 Lowered demand interval minimums
V3.12 2016-06-17 Front panel lock only locks menu, allows energy resets
V3.13 2016-12-07 Build no. displayed on index page; max CT ratio increased to
30,000:1
V3.15 2017-09-06 Added bus averages: Average L-L Volts, Average L-N Volts
and Average Amps (M65xM3).
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CERTIFICATION
Bitronics LLC certifies that the calibration of our products is based on measurements
using equipment whose calibration is traceable to the United States National Institute
of Standards Technology (NIST).
INSTALLATION AND MAINTENANCE
Bitronics LLC products are designed for ease of installation and maintenance. As with
any product of this nature, installation and maintenance can present electrical hazards
and should be performed only by properly trained and qualified personnel. If the
equipment is used in a manner not specified by Bitronics LLC, the protection provided
by the equipment may be impaired.
In order to maintain UL recognition, the following Conditions of Acceptability shall
apply:
a) After installation, all hazardous live parts shall be protected from contact by
personnel or enclosed in a suitable enclosure.
WARRANTY AND ASSISTANCE
This product is warranted against defects in materials and workmanship for a period of
thirty-six (36) months from the date of their original shipment from the factory.
Products repaired at the factory are likewise warranted for eighteen (18) months from
the date the repaired product is shipped, or for the remainder of the product's original
warranty, whichever is greater. Obligation under this warranty is limited to repairing or
replacing, at our designated facility, any part or parts that our examination shows to be
defective. Warranties only apply to products subject to normal use and service. There
are no warranties, obligations, liabilities for consequential damages, or other liabilities
on the part of Bitronics LLC except this warranty covering the repair of defective
materials. The warranties of merchantability and fitness for a particular purpose are
expressly excluded.
For assistance, contact Bitronics LLC at:
Telephone: 610.997.5100
Fax: 610.997.5450
Website: www.novatechweb.com/bitronics
Shipping:
261 Brodhead Road
Bethlehem, PA 18017-8698
USA
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AUTHORIZED REPRESENTATIVE IN THE EUROPEAN UNION
NovaTech Europe BVBA
Kontichsesteenweg 71
2630 Aartselaar
Belgium
T+32.3.458.0807
F+32.3.458.1817
COPYRIGHT NOTICE
This manual is copyrighted and all rights are reserved. The distribution and sale of
this manual is intended for the use of the original purchaser or his agents. This
document may not, in whole or part, be copied, photocopied, reproduced, translated or
reduced to any electronic medium or machine-readable form without prior consent of
Bitronics LLC, except for use by the original purchaser.
The product described by this manual contains hardware and software that is
protected by copyrights owned by one or more of the following entities:
Bitronics, LLC, 261 Brodhead Road, Bethlehem, PA 18017
Schneider Automation, Inc., One High Street, North Andover, MA 01845
Triangle MicroWorks, Inc., 2213 Middlefield Court, Raleigh, NC 27615
Freescale Semiconductor, Inc., 6501 William Cannon Drive West, Austin, TX 78735
gzip inflation uses code Copyright 2002-2008 Mark Adler
inarp uses WinPcap, which is Copyright 1999-2005 NetGroup, Politecnico di Torino
(Italy), and 2005-2010 CACE Technologies, Davis (California).
TRADEMARKS
The following are trademarks or registered trademarks of Bitronics, LLC:
Bitronics logo Bitronics PowerPlex Triplex Triple-II
MultiComm PowerServe SubCycle Technology SubCycleStuf
The following are trademarks or registered trademarks of the DNP User's Group:
DNP DNP3
The following are trademarks or registered trademarks of Schneider Automation, Inc.:
MODSOFT Modicon Modbus Plus Modbus Compact 984 PLC
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SAFETY SECTION
This Safety Section should be read before commencing any work on the equipment.
Health and safety
The information in the Safety Section of the product documentation is intended to
ensure that products are properly installed and handled in order to maintain them in a
safe condition. It is assumed that everyone who will be associated with the equipment
will be familiar with the contents of the Safety Section.
Explanation of symbols and labels
The meaning of symbols and labels that may be used on the equipment or in the
product documentation is given below.
Installing, Commissioning and Servicing
Equipment connections
Personnel undertaking installation, commissioning or servicing work on this equipment
should be aware of the correct working procedures to ensure safety. The product
documentation should be consulted before installing, commissioning or servicing the
equipment.
Terminals exposed during installation, commissioning and maintenance may present a
hazardous voltage unless the equipment is electrically isolated.
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If there is unlocked access to the equipment, care should be taken by all personnel to
avoid electric shock or energy hazards.
Voltage and current connections should be made using insulated crimp terminations to
ensure that terminal block insulation requirements are maintained for safety. To
ensure that wires are correctly terminated, the correct crimp terminal and tool for the
wire size should be used.
Before energizing the equipment, it must be grounded (earthed) using the protective
ground (earth) terminal, or the appropriate termination of the supply plug in the case of
plug connected equipment. Omitting or disconnecting the equipment ground (earth)
may cause a safety hazard.
The recommended minimum ground (earth) wire size is 2.5 mm2 (#12 AWG), unless
otherwise stated in the technical data section of the product documentation.
Before energizing the equipment, the following should be checked:
Voltage rating and polarity
CT circuit rating and integrity of connections
Protective fuse rating
Integrity of ground (earth) connection (where applicable)
Equipment operating conditions
The equipment should be operated within the specified electrical and environmental
limits.
Current transformer circuits
Do not open the secondary circuit of a live CT since the high voltage produced may be
lethal to personnel and could damage insulation.
Insulation and dielectric strength testing
Insulation testing may leave capacitors charged up to a hazardous voltage. At the end
of each part of the test, the voltage should be gradually reduced to zero, to discharge
capacitors, before the test leads are disconnected.
Do not attempt to perform installation, maintenance, service or removal of this device
without taking the necessary safety precautions to avoid shock hazards. De-energize
all live circuit connections before work begins.
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Fiber optic communication
Where fiber optic communication devices are fitted, these should not be viewed
directly. Optical power meters should be used to determine the operation or signal
level of the device.
WARNING: EMISSIONS – CLASS A DEVICE (EN55011)
This is a Class A industrial device. Operation of this device in a residential area may
cause harmful interference, which may require the user to take adequate measures.
DECOMMISSIONING AND DISPOSAL
1. Decommissioning
The auxiliary supply circuit in the equipment may include capacitors across the supply
or to ground (earth). To avoid electric shock or energy hazards, after completely
isolating the supplies to the meter (both poles of any dc supply), the capacitors should
be safely discharged via the external terminals before decommissioning.
2. Disposal
It is recommended that incineration and disposal to watercourses is avoided. The
product should be disposed of in a safe manner. Any products containing batteries
should have them removed before disposal, taking precautions to avoid short circuits.
Particular regulations within the country of operation may apply to the disposal of
lithium batteries.
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1.0 DESCRIPTION & SPECIFICATIONS
1.1 Introduction
The M350 family of 3-phase ammeters and voltmeters provides a range of
measurement and communications capabilities for 3-phase metering. They offer an
outstanding display, superior communications flexibility and easy setup.
The following Model M350 meter types are covered in this manual:
A3 - Ammeter, 3-Phase
V3 - Voltmeter, 3-Phase
1.2 Features
1. 3-phase amps/amp demand (A3) or 3-phase voltages with min/max/avg (V3).
2. Updates every 100ms
3. DNP3 or Modbus protocol available via configurable RS-232/RS-485 serial port
4. Available Ethernet protocol support for DNP3 TCP/UDP or Modbus TCP
5. Web Based configuration via Ethernet service port
6. Wide-range universal power supply
7. Rugged aluminum case
8. One V3 model covers all wiring options for phase-to-phase and phase-to-neutral
9. Standard 4” round meter
10. 3-line at once, easy-to-read, long-life LED displays
11. Ultimate precision with five digits per line
12. Easy setup and scrolling from front display with “Touch-Sense” buttons
1.3 Specifications
Power Supply Input (Auxiliary) Voltage – terminals L1(+) and L2(-)
Installation Category (Auxiliary Power Supply) – CAT II
Nominal: 48-250V dc, 69-240V ac (50/60Hz)
Operating Range: 36-300V dc, 55-275V ac (45-65Hz)
Burden: 8W max, 24VA max
Display: 3 lines of 5 digits, Red LED, 0.56” High
1 line backlit, Engineering Units, Red LED, 0.20” High
Backlit yellow LEDs provide category during setup
Display Interface: 4 buttons
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Input Signals – Measurement Inputs
CT Current
Inputs (A3) Configuration All Input Options 3 Inputs. 3 Phase Currents (IA, IB, IC).
Nominal Input Option 1 1A ac
Input Option 5 5A ac
Range Input Option 1 0 to 2A rms continuous at all rated temperatures
Input Option 5 0 to 10A rms continuous at all rated temperatures
Overload Input Option 1 Withstands 30A ac continuous, 400Aac for 2 seconds
Input Option 5 Withstands 30A ac continuous, 400Aac for 2 seconds
Isolation Input Option 1 2500V ac, minimum.
Input Option 5 2500V ac, minimum.
Burden Input Option 1 0.016VA @ 1A rms, 60Hz (0.0016ohms @ 60Hz)
Input Option 5 0.04VA @ 5A rms, 60Hz (0.0016ohms @ 60Hz)
Frequency All Input Options 45-65 Hz
VT (PT)
Voltage Inputs
(V3)
Configuration 4 Inputs, Measures 1 Bus, 3 or 4 Wire. 3 Phase Voltages (VA,
VB, VC, VN
)
. See Appendix A1 Connection Dia
g
rams.
Nominal 120V ac
Range 0 to 150V rms
System Voltage Intended for use on nominal system voltages up to 208 V rms,
phase-to-phase
(
120V rms, phase-to-neutral
)
.
Common Mode
Input Volta
g
e Reads to 400V peak, any input-to-case (ground)
Impedance >12M ohms, input-to-case (ground)
Voltage
Withstand 2.5kV rms 1min, input-to-case (ground)
2kV rms 1min, input-to-input
Frequency 45-65 Hz
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Sampling System
Sample Rate 64 samples per cycle
Data Update Rate Amps, Volts Available every 100 ms
Number of Bits 16
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Communication Ports
Serial (option*) RS-232, RS-485, Software configurable ports
Baud rate: 9600 bps to 115.2 kbps
Ethernet Single port; copper 10/100 Base-TX (standard)
Single port; LC fiber 100 Base-FX (option)
Analog Transducer
Outputs
(
option*
)
Refer to section 7.0 for specifications
*Either the serial port or analog output may be ordered as an option, but not both
Accuracy
A
ccuracies are specified at nominal Frequency and 25C, (unless otherwise noted). Unless noted, all values are true RMS
and include Harmonics to the 63rd
(
minimum
)
.
Voltage AC: Better than 0.1% of reading (20 to 150 V rms, input-to-case).
(
+/- 25ppm/De
g
C
)
Current Input option 1
(Internal Isolation -
1A ac)
Better than 0.1% of reading +/- 20uA (>0.1A to 2.0A, -20C to 70C)
Better than 0.1% of reading +/- 50uA (0.01A to 0.1A, -20C to 70C)
Minimum reading 1mA
Input option 5
(Internal Isolation -
5A ac)
Better than 0.1% of reading +/- 100uA (>0.5A to 10.0A, -20C to
70C
)
Better than 0.1% of reading +/- 250uA (0.05A to 0.5A, -20C to 70C)
Minimum reading 5mA
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Environmental
Operating Temperature -40C to 70C
Relative Humidity 0-95% non-condensing
Measurement Inputs
(VTs, CTs)
Installation/Measurement
Cate
g
or
y
CAT III (Distribution Level) Refer to definitions below.
Pollution Degree Pollution Degree 2 Refer to definitions below.
Enclosure Protection
(to IEC60529: 2001)
Front Panel: IP 20, Rear: IP 20
When equipment is mounted in an appropriately rated protective enclosure to NEMA or IP
protection classifications, as required for the installation. Ratings are applicable for enclosure
cate
g
or
y
2
(
see definitions
)
Altitude Up to and including 2000m above sea level
Intended Use Indoor use; Indoor/Outdoor use when mounted in an appropriately rated protective enclosure
to NEMA or IP protection classifications, as required for the installation.
Class 1 equipment to IEC61140: 2001
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Physical
Connections
Protective
Conductor
Terminal
10-32 Studs for connection with protective earth ground. Recommended Torque: 12 In-Lbs,
1.36 N-m
Cable temperature ratin
g
: 85C minimum
Current
(CT) Model
A
3 Onl
y
10-32 Studs for current inputs. Recommended Torque: 12 In-Lbs, 1.36 N-m
Cable temperature rating: 85C minimum
Voltage
(VT) &
(AUX
PWR)
Terminal Block accepts #22-10 AWG (0.35 to 5mm2) wire, or terminal lugs up to 0.375"
(9.53mm) wide. Precautions must be taken to prevent shorting of lugs at the terminal block.
A minimum distance of 1/8" (3mm) is recommended between uninsulated lugs to maintain
insulation requirements. Recommended Torque: 9 In-Lbs, 1.02 N-m
Cable temperature ratin
g
: 85C minimum
Serial Port
6 position removable terminal block, accepts 26-14AWG solid or 26-12 AWG stranded wire.
Recommended Torque 7 in-lbs, 0.79 N-m.
Cable temperature ratin
g
: 85C minimum
Ethernet RJ45, 8 position modular jack, Category 5 for copper connection; 100m (328 ft.) UTP
(
unshielded twisted pair
)
cable.
Weight
(
t
y
pical
)
1.8 lbs (.8 kg)
Size Industry standard 4” round case, 7.0 inches long
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Definitions:
Enclosure Category 2: Enclosures where no pressure difference relative to the
surrounding air is present.
Installation Category II (Overvoltage Category II) or CAT II: Equipment is intended
for connection to the fixed installation of a building. The power supply to the electronic
equipment is separated from other circuits, usually by a dedicated transformer for the
mains power supply.
Measurement/Installation Category III (Overvoltage Category III) or CAT III:
Distribution Level, fixed installation, with smaller transient overvoltages than those at
the primary supply level, overhead lines, cable systems, etc.
Pollution: Any degree of foreign matter, solid, liquid, or gaseous that can result in a
reduction of electric strength or surface resistivity of the insulation.
Pollution Degree 2: Only non-conductive pollution occurs except that occasionally a
temporary conductivity caused by condensation is to be expected.
1.4 Environment
UL/CSA Recognized, File Number E164178
UL61010-1, Edition 3, Issue Date 2012/05/11
Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use – Part 1: General Requirements
UL61010-2-30, Edition 1 – Issue Date 2012/05/11
Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use – Part 2: Particular Requirements for Testing and Measuring Circuits
CSA C22.2 No. 61010-1-12-CAN/CSA, Edition 3, Issue Date 2012/05/01
CAN/CSA Safety Requirements for Electrical Equipment for Measurement, Control,
and Laboratory Use – Part 1: General Requirements
CSA C22.2 No. 61010-2-30-12-CAN/CSA, Edition 1 – Issue Date 2012/05/01
Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use – Part 2-030: Particular Requirements for Testing and Measuring
Circuits
If applicable, the CE mark must be prominently marked on the case label.
European Community Directive on EMC (EMCD) 2014/30/EU, superseding
2004/108/EC and Directive 91/263/EC [TTE/SES].
European Community Directive on Low Voltage (LVD) 2014/35/EU,
superseding 2006/95/EC
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The object of the declaration described above is in conformity with the relevant Union
harmonization legislation: Directives 2004/108/EC & 2006/95/EC (until April 19th, 2016) and
Directives 2014/30/EU & 2014/35/EU (from April 20th, 2016).
Product and Generic Standards
The following product and generic standards were used to establish conformity:
Low Voltage (Product Safety)
IEC 61010-1, Edition 3, Issue Date 2010
Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use – Part 1: General Requirements
IEC 61010-2-30, Edition 1 – Issue Date 2010
Safety Requirements for Electrical Equipment for Measurement, Control, and
Laboratory Use – Part 2-030: Particular Requirements for Testing and Measuring
Circuits
EMC: EN 61326-1: 2013 (Supersedes EN61326-1: 2006), EN 61000-6-2: 2005 + AC:
2005 (supersedes EN 61000-6-2:2005),
EN 61000-6-4: 2007 + A1:2011 (IEC date 2010)
Radiated Emissions Electric Field Strength
EN 55011: 2009 + A1: 2010
EN 55011: 2016
EN 61000-6-4: 2007 + A1:2011 (IEC date 2010
Group 1, Class A
Frequency: 30 - 1000 MHz
AC Powerline Conducted Emissions
EN 55011: 2009 + A1: 2010
EN 55011: 2016
EN 61000-6-4: 2007 + A1:2011 (IEC date 2010
Group 1, Class A
Frequency: 150 kHz – 30 MHz
Conducted Emissions, Telecommunication port (Ethernet port)
EN 55022: 2010 + AC: 2011
EN 55032: 2012 + AC: 2013
EN 55032: 2015 + AC: 2016-07
Group 1, Class A
Frequency: 150 kHz – 30 MHz
Electrostatic Discharge (ESD)
EN61000-4-2: 2009
Discharge voltage: ± 8 KV Air; ± 4 KV Contact & Additionally meets ± 6 KV Contact
Immunity to Radiated Electromagnetic Energy (Radio Frequency)
EN 61000-4-3: 2006 + A1: 2008 + A2:2010, Class III
Frequency: 80 – 1000 MHz, Amplitude: 10.0 V/m, Modulation: 80% AM @ 1 kHz
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Frequency: 1400 – 2000 MHz, Amplitude: 3.0 V/m, Modulation: 80% AM @ 1 kHz
Frequency: 2000 – 2700 MHz Amplitude: 1.0 V/m Modulation: 80% AM @ 1 kHz
Digital Radio Telephones:
Frequency: 900 MHz & 1890 MHz, Amplitude: 10.0 V/m, 3.0 V/m,
Modulation: 80% AM @1kHz
Electrical Fast Transient / Burst Immunity
EN 61000-4-4: 2012 (supersedes EN 61000-4-4: 2004 + A1:2010)
Burst Frequency: 5 kHz
Amplitude, AC Power Port: ± 4 KV (Severity Level 4), exceeds ± 2 KV requirement
Amplitude, Signal Port: ± 1 KV, Additionally meets ± 2 KV (Severity Level 3)
Amplitude, Telecom ports (Ethernet): ± 1 KV
Current/Voltage Surge Immunity
EN 61000-4-5: 2014 (supersedes EN 61000-4-5: 2006)
Open Circuit Voltage: 1.2 / 50 s
Short Circuit Current: 8 / 20 s
Amplitude, AC Power Port: ± 2 KV common mode, ± 1 KV differential mode
Immunity to Conducted Disturbances Induced by Radio Frequency Fields
EN 61000-4-6: 2014 (supersedes EN 61000-4-6: 2009)
Level: 3
Frequency: 150 kHz – 80 MHz
Amplitude: 10 V rms
Modulation: 80% AM @ 1 kHz
Power Frequency Magnetic Fields
EN 61000-4-8: 2010
Amplitude: 30A/m
Frequency: 50 and 60 Hz
AC Supply Voltage Dips and Short Interruptions
EN 61000-4-11: 2004
Surge Withstand Capability Test For Protective Relays and Relay Systems
ANSI/IEEE C37.90.1: 2002 (2.5kV oscillatory wave and 4kV EFT)
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2.0 PHYSICAL CONSTRUCTION & MOUNTING
The M350 meters are packaged in rugged aluminum case specifically designed to
meet the harsh conditions found in utility and industrial applications.
The Front panel view of the V3 3-phase voltmeter is shown in Figure 1. The A3 3-
phase ammeter is not shown, but would look similar indicating Amps for engineering
units. The mechanical dimensions of the M350 are shown in Figure 2.
Figure 1 – M350 V3 3-Phase Voltmeter Front View
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