A further highlight was provided by the cooperation with Rittal based in Herborn. On the Ri4Power technology partner stand in Hall 11 Stand F14, Janitza presented its wide range of digital integrated measurement devices, energy control systems, network analysers, power factor controllers and systems integrated in a cabinet system from Rittal. In addition to personal talks, the visitors were also able to obtain extensive information about functionality, economic efficiency and sustainability of the presented components through tours organised by Rittal.

The Hanover Fair 2012 was a great success for Janitza electronics GmbH. The huge number of stand visitors and discussions speaks for itself. A significant proportion of the increase as well as wide-reaching interest came from abroad. Janitza's expectations of the fair were completely fulfilled. "Our customers appreciate the regional, expert know-how of our sales engineers, ranging from consultation and development of concepts to the commissioning of tailored solutions," according to Mr Müller, Director of Sales & Marketing Export at Janitza electronics GmbH.

The fair clearly showed that the trend toward the transformation of energy systems has now arrived in the entire industry and Janitza electronics GmbH is making an essential contribution with systematic and transparent energy management solutions.

The occupational energy analysis provides you with an overview and transparency of the energy supply and patterns of energy consumption as well as the individual energy flows.

An important tool for EMS is provided by modern energy measurement devices, such as the UMG 604E compact and high-performance grid analyser. Grid analysers of the UMG 604 product family are suitable for use on all network levels. The high sample rate of 20 kHz enables continuous measurement with determination of over 800 measurement variables. Equipped with a 500 MHz DSP (digital signal processor), the UMG 604 is a very fast and powerful grid analyser. It records all electrical energy consumption with various tariffs, electrical standard variables such as current, voltage, frequency, performance and many more. Due to the very powerful digital signal processors, all important voltage quality parameters are also recorded, e.g. short-time interruptions with fault recorder function, transients, harmonics up to the 40th order or starting currents and thus ensure the necessary transparency in your energy supply.

Based on this data, concepts can be e.g. developed for reducing power costs, initiate energy efficiency measures and also monitor and log the achieved improvements using the UMG 604. With regard to energy management systems in accordance with ISO 50001 (EN 16001), EEG levy exemption as per §41 or the reduction of ecological tax, measurement devices – such as the UMG604 – form a future-safe basis as a quasi-energy centre. In addition, the integrated web server with user-friendly homepage offers simple remote access to all energy consumption figures.

The high sample rate of 20 kHz, a measurement precision of 0.2 % for the voltage and the effective energy class 0.5 stand for measurement of the highest quality. The energy measurement in 4 quadrants, each with 8 tariffs for effective power and reactive power, ensures precise and reliable recording of the energy consumption values for individual consumers or for the whole supply.

The measurement data is temporarily stored on a flash drive on the grid analyser. At regular intervals, the measurement data is read and stored in a central database via a bus connection, where it is available for future use and energy analysis. This redundancy in the measurement data ensures that important data is available over a long period of time. The large 128 MB measurement data memory means the measurement data can be stored for up to 2 years in the device itself, depending on the user configuration. If the grid analyser is not connected to a bus and the data cannot therefore be read out automatically, the measurement data is safely available in the measurement device itself for a long period of time.

Extensive communications options: Ethernet (TCP/IP), Profibus, Modbus, M-Bus …

Due to numerous interfaces and protocols, an uncomplicated system connection (energy management system, PLC, SCADA, GLT) is ensured. Nowadays, all energy measurement devices are typically linked with one another, the measurement data is automatically read out over a field bus and made available for future use via a central data server.

To keep installation costs low (e.g. peripherals for field buses), the Ethernet TCP/IP is used more and more frequently as the backbone of the data communication. Through connection to an existing Ethernet architecture, fast, cost-optimised and reliable communication can be set up. As grid analysers with an Ethernet interface are expensive, there are many deliberations on how to realise this with the available budget. The solution here is the configuration of a master-slave architecture with a measurement device based on Ethernet such as the UMG604E grid analyser and up to 31 more cost-efficient slave measurement devices such as the UMG96RM-CBM, for example, for the outlets on the low voltage side. Thus, the higher-quality UMG604E grid analysers are used as energy management equipment at the central feed points where stringent demands are already made of the measurement technology. At the same time, the more cost-efficient UMG 96RM Modbus devices are reached with the UMG604E through the Ethernet-Modbus gateway function or, in other words, the data of the Modbus devices is also stored over Ethernet.

Basically, the UMG604E offers an extremely open architecture so the Modbus addresses can be accessed directly using a PLC, for example, or alternatively the UMG604E is integrated in a PLC environment via Profibus. In the field of building automation, the BACNET protocol is used more and more often.

Stay informed at any time, anywhere via the integrated UMG device homepage

Who hasn't experienced this? Just after leaving the company, the first call about problems comes into the production department, computers breaking down, the energy supply crashing, …

By means of the homepage (web server) integrated in the UMG604 grid analyser, direct access can be gained to the data of the individual measurement points, from anywhere in the world, no matter where you are. All authorised employees of the electrical department and management can obtain extensive information directly via the homepage of the individual grid analyser. Just a web browser and the network IP address assigned to the individual measurement device are required for this.

PLC functionality via the integrated Jasic, e.g. alarm messages via EMAIL

The Jasic® programming language opens up completely new possibilities. This means the user is not bound to the functions tightly integrated in the device alone, but can add his own functions to the device. Up to seven of these freely defined application programs can be processed in parallel in the device. Also limit values for various parameters can be set, for example. Wherever they are in the world, the responsible employees of the electrical department are notified by email if the energy supply is overloaded, short-term interruptions of the supply companies bring the production process to a halt or inadmissible harmonics reduce the service life of equipment.

APPs – expansions with know-how

For flexible or customer-specific solutions Janitza offers expansions (APPs), based on Jasic programming, for the UMG604E. The functions integrated in the device can thus be expanded, controlled and additionally visualised by APPs. Depending on the application, an APP consists of several Jasic®, Flash and homepage files where the managing and installation is carried out via the GridVis software. Due to the open structure, users and third-party providers can develop further APPs and use them on the measurement devices in addition to the range of APPs offered by Janitza electronics®. A popular APP is the free Multitouch APP (art. no. 51.00.207). The APP reads 25 standard measurement values (fixed default values) of up to 31 slave devices (configurable) over RS485 and specifies them for global variables or for BACnet data points in the master. Up to 31 slave devices can be visualised. The number of devices and device descriptions can be configured via the master devices homepage. The master device is automatically recognised and entered in the "Device type" field.

GridVis software for energy management systems and voltage quality analysis

In accordance with the Janitza philosophy, an "automated measurement system" should not be limited to energy consumption, but always cover both main points: Power quality + energy management

What is the point of energy consumption being optimised and power saved if insufficient grid quality does not allow stable processes. The current changes in the grid structure, away from central large-scale power plants to decentralised grid supply, the growing amount of power electronics, the falling number of linear consumers … all this will further exacerbate the problems in power quality!

The GridVis software is part of the delivery scope of all UMG measurement devices and can be used for energy management systems and network quality analysis. The software enables the readout of historical data values, e.g. load profiles that allow trend analysis and benchmarks, as well as the readout and visualisation of online values for monitoring the present load. The GridVis software is a powerful tool for the automatic recording of measurement data for the analysis and visualisation of the measurement values. The topology view offers a quick overview of the actual online situation, for example. Automatically generated reports for most power quality standards (e.g. EN 50160, IEEE 519, ITIC, EN 61000-2-4) for grid analysis as well as energy consumption reports can be freely planned by the user.

The creation of key figures, critical for benchmark analyses, is possible via the virtual measurement device. Key figures are an important component for comparing various production lines, works, subsidiaries and factories, for example, with one another.

A sensible measure to reduce the power costs is peak load optimisation.

Optionally, the UMG604 offers the Emax function: Reduce active peak power intelligently

Energy consumption varies significantly over a 24-hour cycle. This leads to massive loads on generation and distribution facilities. These peak power levels very often lead to high costs in the power bill. The Emax applications for the UMG604E integrate intelligent control algorithms which calculate the effective power trend and compare this with the agreed target effective power. Due to this trend calculation, the Emax application can accurately intervene in the operating process and switch off non critical consumers for a short time in accordance with user specifications. If feedback processing is connected, only consumers which are using power at the time of the calculation are switched off or integrated in the trend value calculation. If feedback processing is not possible, a fixed level of availability can be set as a percentage. Thus, part of the very cost-intensive peaks in power can be safely avoided and considerable cost-saving potential can be realised. The random power peaks are avoided.

EMS step by step

Even though many customers recognise the need for more energy efficiency and thus for an energy management system, they are hesitant to make sweeping payments for non-process investments. Setting up an energy management system does not necessarily presuppose an extensive and expensive energy monitoring system. With its scalable solutions, Janitza offers the possibility of successive introduction of an energy monitoring and energy management system. Here we always recommend the pyramid solution: "However, we begin the set-up back-to-front – at the tip of the pyramid!" In other words, initially only a few, higher-quality grid analysers such as the UMG511 or UMG604 are required at the transfer points of the energy supplier. Also grid analysers such as the UMG604 are placed on the main energy distribution outlets. This means the customer obtains already extensive information and transparency of the energy consumption figures so he can then decide if it is sensible to reduce consumption further. By now, the trend in automotive engineering already goes down to machine level.

The consistency of the Janitza product range, the continuous development of the measurement devices and software as well as the regional know-how of the Janitza distribution engineers ensure a long-term solution for energy management.

For widespread application, the compact and cost-optimised construction of the UMG 605 is especially decisive.

The unique technical features – the large 128 MB measurement data memory, the high sample rate of 20 kHz as well as the FFT up to the 63rd harmonic with direction detection for current, voltage, effective and reactive power – must be highlighted. Programming options are also integrated, with functionalities similar to a PLC control. Besides transparency, this means local intelligence gets into the secondary substation and all measurement data can already be processed at the measurement point. If there is short-term interruption, for example, an alarm message is sent per email.

A wide range of communication options, e.g. RS485 Modbus, Profibus, Ethernet (TCP/IP), BACnet, HTTP, FTP, SMTP, SNTP, SNMP, DNS..., enable cost-efficient and rapid integration in existing communication architectures. The embedded web server (device homepage) can be accessed from around the globe via a web-browser. The integrated Modbus/Ethernet gateway allows a master/slave configuration with subordinate, more cost-efficient Modbus measurement devices for the outlets on the low voltage side.

The UMG 605 identifies all energy, electrical and voltage quality parameters for all common power quality standards, such as the EN 50160, IEEE 519, ITIC curve or EN 61000-2-4, for example.

The GridVis power quality analysis software for automatic report generation according to freely defined schedules is part of the delivery scope. A PQDIF tool enables the data to be converted into the PQDIF standard.

With the exception of the PE conductors, all conductors of the current circuit to be monitored are fed through a summation current transformer. In the fault-free system, the vectorial sum of the instantaneous currents flowing in and back is equal to zero, i.e. balanced. If a current flows to earth in the event of a fault, the vectorial sum of the instantaneous currents flowing in and back is not equal to zero - unbalanced - and there is a difference in current. The difference in current is induced in the summation current transformer and is processed further by the measurement device.

UMG 604D

With purely alternating currents in TN and IT networks, the UMG 604D monitors the differential currents in electrical systems, displays the actual residual current value with wave shape and current harmonics up to the 40th harmonic, and registers the exceeding of limit values. Next to the operating currents L1-L3, the fourth measurement input for the differential current measurement is colour coded (light grey) and intended for currents in the 10 mA range. There are different current transformers with a transmission ratio of 600/1 A and adequately sized internal dimensions (20x30, 50x80 or 80x120 mm).

Monitoring of the ZEP – central earthing point

With the monitoring of the ZEP, an equivalent leakage current measurement of the entire system, including the consumers, can be realised. Conclusions can be drawn on the total insulation resistance of the electrical system and the electrical equipment. For effective monitoring to be possible, the sub-distribution units should also be monitored as a type of two-line system.

Insulation measurements cannot be carried out in data processing centres as consumers cannot be switched off. Alternatively, a differential current monitoring can provide assistance. Due to the high availability of IT systems, earth leakage circuit breakers are not generally used. An RCM measurement counts as an alternative measure. In the current VDE, a TNS system is obligatory for information technology equipment. The UMG604D can be used to permanently monitor and ensure the correct, clean execution of a TNS installation.
Stray residual currents are detected in time and measures can be initiated.
 

Customer benefits

• Greater system and fire safety
• Support for maintenance
• Better EMC (avoidance of magnetic fields)
• No residual currents in data lines (no data errors)
• Measurement of the increase in differential current
• Alarm issued if the limit values are exceeded
• Detection of residual currents as they occur
• Monitoring of the ZEP

The UMG604D offers the great advantage that all functions are integrated in a single device!

 

• Monitoring of operational and safety parameters

   

• Analysis of the residual current and the operating currents in wave shape and harmonics up to the 40th harmonic, and much more 

   

• Power quality

   

• Energy management

   

• Adaptation of existing alarm installations over the RS485 interface and digital inputs

   

Typical applications

 

• Data processing centres

   

• Office and administrative buildings

   

• Banks and insurances

   

• Telecommunication centres

   

• Mobile phone distributors

   

• Pump stations

   

• Public pools and aqua parks

   

• Machines and electrical systems

   

• Hospitals

   

The continuous energy analysis provides you with an overview and transparency of the energy supply and patterns of energy consumption as well as the individual energy flows.

An important tool for EMS is provided by modern energy measurement devices, such as the compact and high-performance UMG96RM multifunction measurement device. It records electrical energy consumption, standard electrical variables – such as current, voltage, frequency, power – and much more such as power quality characteristics, e.g. harmonics up to the 40th order. The high measurement accuracy, compact construction, extensive measurement data, multi-faceted protocol for integration in superordinate systems as well as the economical design mean that the UMG 96RM is unrivalled.

The high sample rate of 21.3 kHz, a measurement precision of 0.2 % and the effective energy class 0.5 (kWh) stand for measurement of the highest quality. The energy measurement in 4 quadrants, each with 8 tariffs for effective power and reactive power, ensures precise and reliable recording of the operational values for individual consumers or for the whole supply.

Extensive communication options: Ethernet (TCP/IP), Profibus, Modbus, M-Bus…

Due to numerous interfaces and protocols, an uncomplicated system connection (energy management system, PLC, SCADA, GLT) is ensured. The embedded web server (device homepage) can be accessed from around the globe via a browser. The integrated Modbus/Ethernet gateway allows a master/slave configuration with subordinate, more cost-efficient Modbus measurement devices for the outlets on the low voltage side.

The unique technical features – including the large 256 MB measurement data memory, the high sample rate of 21 kHz as well as the FFT up to the 40th harmonic with direction detection – must be highlighted. The UMG96RM identifies all energy parameters, electrical parameters and extensive voltage quality parameters.

The GridVis software is part of the delivery scope of all UMG measurement devices and can be used for energy management systems and network quality analysis. The software enables the readout of historical data values, e.g. load profiles that allow trend analysis, as well as the reading of online values for monitoring the present load. The GridVis software is a powerful tool for the automatic recording of measurement data and for the analysis and visualisation of the measurement values. The topology view offers a quick overview of the actual online situation, for example. Automatically generated reports for most standards of the grid analysis, as well as energy consumption reports can be freely planned by the user.

The ordering codes for the UL certified types are different to the standard types: 

• UMG 508:   # 52.21.011 (230V), # 52.21.012 (90V)
• UMG 511:   # 52.19.011 (230V), # 52.19.012 (90V)

You can find this information under UL data base online as well:

UL database PICQ.E330265
UL database PICQ7.E330265

Please find attached the following document: “Certificate of Compliance”  

UL file number is as follows: E330265   

Beside almost mandatory requirement of this certification for the North American markets I am sure this will help you as well for your marketing activities in other regions!   

Note: Please consider that the UL versions are not necessarily on stock yet. Please clarify delivery time in case of concrete demand.

• Flexible tree structure, user-defined trees can be created
• Comprehensive cost centre report
• ITI (CBEMA) curve
• Dashboard with work overview in the device overview
• New products: UMG 96RM-P (Profibus and CBM variants)
• Changeover to the new DIN-EN50160 issued in 2011
• The wizard for the cost overview has been revised
• The topology has been expanded by link elements (hyperlinks)
• The topology has been expanded by static text
• Automatic reports can be saved in a user-defined path
• Flags can be displayed
• Time in the status bar
• Import of the database from other projects
• Graphsets can be updated

This certificate summarizes the results of the PSL IEC 61000-4-30 Power Quality Measurement Methods Compliance Report, and testifies the compliance of our UMG 511 in all aspects!

What stands Class A for?

61000-4-30 is an IEC standard that defines the correct measuring algorithms for power quality instruments. This standard ensures that different PQ instruments use the same definitions, and measurement techniques, for various power quality parameters: sags/dips, swells, frequency, harmonics, flicker, etc. Class A Instruments that meet Class A performance requirements of this standard will, when connected to the same signals, produce the same results. Class A instruments must meet the highest performance and accuracy requirements in the standard.

• Due to legal reasons class A is almost mandatory for power utilities
• IEC61000-4-30 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.…

he Class A Certificate testifies the top class ranking of the UMG 511!