MESSUNG PRESENTS JANITZA UMG 512 PRO CLASS A POWER QUALITY ANALYSER
                     MESSUNG PRESENTS 
JANITZA UMG 512 PRO 
CLASS A POWER QUALITY 
ANALYSER
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GAIN COMPLETE CONTROL OF 
POWER QUALITY AND POWER 
CONSUMPTION
WITH JANITZA UMG 512 PRO CLASS A 
POWER QUALITY ANALYSER
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BACKGROUND
Messung Electrical Engineering is the authorised distributor for Janitza 
electronics GmbH, world leader in energy management solutions. 
Janitza is leading supplier of cutting-edge digital energy meters, 
universal measurement devices, power quality analysers, peak demand 
management systems, etc.
Amidst growing concerns regarding energy consumption and power 
quality, and with upcoming legislation from Indian government, Indian 
industries have to implement energy management systems of high 
international standards.
For efficient power quality monitoring, power measurement and 
analysing, Messung presents Janitza's UMG 512 PRO - a fixed Class A 
power quality analyser in compliance with IEC 61000-4-30 Class A and 
IEEE 519-2014 standards.
But first, let’s understand power quality and its relevant international 
standards.
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ABOUT POWER QUALITY
• Power quality refers to a set of electrical boundaries defined by various 
documented rules designed to allow electrical equipment to function in its 
intended manner without significant loss of performance or life expectancy. 
• This includes the steady and stable supply of electricity delivered by the grid. 
• In order to achieve this aim, it is necessary to constantly and vigilantly 
monitor the power conditions within an electrical network. 
• There are a large number of power quality parameters, but many of these 
have not been well defined. This is where the IEC 61000-4-30 comes in.
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ABOUT IEC 61000-4-30
• An IEC power quality measurement standard that 
defines the correct measuring algorithms for power 
quality instruments. 
• Defines methods for measurement and 
interpretation of power quality parameters in 50/60 
Hz AC power supply systems. 
• Ensures that different PQ instruments use the same 
definitions, and measurement techniques for 
various power quality parameters: sags/dips, swells, 
frequency, harmonics, flicker, etc. 
• By standardizing the measurement methodologies, 
IEC 61000-4-30 creates the ability to obtain reliable, 
repeatable and comparable results using any 
compliant meter.
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PARAMETERS DEFINED IN THE 
CLASSES OF IEC 61000-4-30
IEC 61000-4-30 STANDARD
• The IEC 61000-4-30 standard defines the • Power frequency • Under- and over-deviation
measurement method, accuracy and time • Magnitude of supply voltage • Rapid voltage changes
aggregation to verity of power quality parameters 
in 3 performance classes to obtain repeatable and • Flicker (by reference to IEC 61000- • Flicker class F1
comparable results. 4-15) • Magnitude of the current
1. Class A - must comply to the highest • Supply dips/swells • Current unbalance
performances and accuracy level to obtain • Voltage Interruptions
repeatable and comparable results • Current harmonics (by reference to 
• Voltage unbalance IEC 61000-4-7)
2. Class S - accuracy levels are less stringent. Class 
S Power quality analysers can be used for • Voltage harmonics (by reference to • Current interharmonics (by 
statistical surveys and contractual application IEC 61000-4-7) reference to IEC 61000-4-7)
where comparable measurement is not required • Voltage Inter-harmonics (by • Recording of current along with 
3. Class B - Class B performance is defined to avoid reference to IEC 61000-4-7) voltage during events
making any existing instrument designs obsolete • Mains signaling
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WHY IS ‘CLASS A’ SO 
IMPORTANT?
• Due to legal reasons, Class A is almost mandatory 
for power utilities
• IEC 61000-4-30 defines the correct measuring 
algorithms for power quality monitoring 
instruments
• Instruments that meet Class A performance, when 
connected to the same signals, will produce the 
same results
• Class A instruments must meet the highest 
performance and accuracy requirements in the 
standard
• This standard ensures that different PQM 
instruments use the same definitions, and 
measurement techniques, for various power 
quality parameters: sags/dips, swells, frequency, 
harmonics, flicker, etc.…
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ABOUT IEEE 519-2014
• Establishes levels of voltage and current harmonic 
distortion acceptable to the distribution system 
based on the input transformer characteristic and 
the loads on a customer’s facility. 
• Establishes goals for designing electrical systems 
that contain both linear and non-linear loads. 
• The existed voltage and current waveforms in 
every part of the system are explained, and the 
waveform distortion goals for the system designer 
are established.
• Many electrical consultants are including 
compliance with IEEE 519-2014 in their design 
specifications to help reduce harmonic problems 
and avoid penalties.
• The standard is periodically updated as the 
industry evolves. The latest edition is IEEE 519-
2014.
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UMG 512 PRO
The Janitza UMG 512-PRO is particularly well suited to the 
monitoring of power quality in accordance with current standards, 
e.g. EN 50160, IEEE519 or EN 61000-2-4.
MAIN FEATURES
Class A: 
• Certified to the IEC 61000-4-30 standard, it provides detailed 
specifications that a mains analyser must meet so that the 
results can also be consulted in case of disputes. 
• Defines the necessary parameters, suitable measurement 
methods, accuracy and bandwidths. 
• This makes it possible to easily reproduce and compare results.
Power quality: 
• Reliable operation of modern plants and systems always 
demands a high degree of supply reliability and good 
power quality. 
• UMG 512 PRO reliably records, analyses and documents all 
interferences such as harmonics, unbalance, transients, voltage 
dips, voltage swells, flickers, phase shifts and reactive power.
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UMG 512 PRO
Residual Current Monitoring (RCM):
• Detects leakage currents in their initial stages before they cause 
system failures or even fires. 
• Continuous RCM increases the system safety and availability 
significantly. 
Measuring devices homepage: 
• The web server provides a wide range of data in a user-friendly 
format. 
• No need to install any software on your PC; a conventional web 
browser is all that is required. 
• APPs also are available for an extended range of functions.
Ethernet-Modbus-Gateway: 
• The gateway can be used to easily include the Modbus RTU devices 
that are connected to the master device as slaves in an Ethernet 
architecture. 
• Also possible via a Modbus RTU interface for devices with identical file 
formats and matching function codes.
BACnet: 
• As soon as a UMG measuring device has received its BACnet ID and is 
integrated into the network, the system recognises it and displays it 
in the browser. 
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UMG 512 PRO APPLICATIONS
• Continuous monitoring of the power quality 
• Harmonics analysis with power quality problems 
• Checking the internal supply network according to 
EN 61000-4-7, EN 61000-4-15, IEC 61000-4-30 
• Fault analysis in case of problems with the energy 
supply 
• Documentation of the power quality for customers 
and regulatory authorities 
• Ethernet Gateway for subordinate measurement 
points 
• Report generator for power quality standards: EN 
50160, IEEE 519, EN61000-2-4, ITIC … 
• Report generator for energy consumptions 
• Energy Dashboard 
• Remote monitoring of critical processes
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CONCLUSION
• Power quality and supply reliability are extremely important. 
• High sensitivity devices and processes are heavily dependent on a clearly defined 
power quality. 
• To ensure stable processes and adequate power supply despite the increasing number 
of devices which generate grid distortions, steps must be taken to improve the power 
quality.
• In India, it is becoming mandatory by law for industries, infrastructure projects, data 
centres, etc. to install power quality meters and analysers as per the latest IEEE 519-
2014 and IEC 61000-4-30 standards.
• Janitza offers a comprehensive range to improve the power quality.
• Janitza’s state-of-the-art, cost-effective UMG 512 PRO, backed by Messung’s in-depth 
knowhow and support, can help customers implement the optimal system 
• Trust Messung to help you fulfill mandatory requirements, ensure power quality, 
maintain supply stability, protect assets and reduce costs.
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THANK YOU
Contact us
MESSUNG SYSTEMS PVT. LTD.
501, 502 & 503 Lunkad Sky Vista, Viman Nagar, Pune, India - 411 014.
+91 20 6649 2800 | [email protected]
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