UMG 511

poptavka
 
 

Power Quality Analyzer UMG 511

 

Applications

The UMG 511 power quality analyser is particularly suitable for monitoring power quality according to standards such as the EN 50160. All power quality parameters are collected and analysed e.g. flicker, short term interruptions with fault recorder function, transients, harmonics up to the 63rd and inrush currents etc. 

Extensive communication possibilities e.g. RS 485 Modbus, Profibus, Ethernet (TCP/IP), BACnet, http, FTP, SMTP, SNTP, DNS ... allow cost effective and rapid integration in existing communication networks. 

Worldwide access to the embedded web server can be gained through a web browser. The GridVis software included in the content of delivery allows extensive analysis just by the click of a button..

Areas of application

  • Continuous monitoring of the power quality e.g. EN 50160
  • Ethernet gateway for subordinate measurement points
  • Analysis of electrical faults for network problems
  • Monitoring of the internal distribution network according to EN 61000-4-7, 4-15, 4-30
  • Report generator for EN 50160 analysis
  • Remote control

 

Display examples

The backlighted active matrix display (5,7“) of the UMG 511 enables the presentation of measurement values in numerical form, as a bar chart or as a line graph. Selected displays can automatically be displayed in alternation (automatic display rotation). The instrument is programmed using userfriendly clear text menus or the GridVis software.

 

 

 

Main features

  • Measurement of power quality according to DIN EN 61000-4-30
  • Measuring method class A
  • Fourier analysis 1st to 63rd harmonic for U-LN, U-LL, I, P (consumption/supply) and Q (ind./cap.)
  • Measurement of harmonics and interharmonics (U-LN, U-LL, I) according to DIN EN 61000-4-7
  • Analysis and evaluation according to DIN EN 50160 with the contained programming and analysis
  •  software GridVis
  • Flicker measurement according to DIN EN 61000-4-15
  • Measurement in TN and TT grids (500V CATIII)
  • 4 voltage measuring inputs, 4 current measuring inputs
  • Continuous sampling of voltage and current inputs with 20kHz
  • Recording of more than 2000 different measurement parameter per measuring cycle (200ms)
  • Detection of transients 50µs and storage with up to 16.000 samples
  • Data logger / Event memory (256MB Flashdisk)
  • 8 digital inputs and 5 digital outputs
  • Profibus DP/V0 alternatively RS 485 (Modbus RTU, Modbus-Master, optional BACnet)
  • Ethernet (Web-Server, E-Mail, optional BACnet)
  • Programming of customer specific applications in Jasic
  • * BACnet optional

Main measurement

The UMG 511 has 4 measurement channels for current and voltage. The first three channels (main measurement) are intended for use in a three-phase system.

Auxiliary measurement

The auxiliary measurement can be used for measurement in a single-phase or symmetrical threephase system. Alternatively, the current input can be allocated to the three-phase system of the main measurement for measuring the neutralconductor current. For example, the voltage input could then be used for recording the voltage between the neutral conductor and PE. The auxiliary measurement provides all measurement parameters like in the main measurement (current, voltage, power, harmonics, transients, events and flicker). 

Interfaces

RS485 protocols: Profibus DP or Modbus / RTU, Modbus-Gateway and BACnet

Fast Ethernet 10/100Base-TX protocols: HTTP, NTP, Modbus TCP, Modbus over TCP, DHCP und BACnet

The measurement values and recorded data can be called up using the Ethernet (TCP/IP). Parameterisation of the instrument and analysis of the data is undertaken using GridVis software included in the delivery. The actual measurement values can be read out using the various field bus protocols (Modbus/RTU, Modbus/TCP, Profibus). An content of the digital inputs and outputs can be used for various

 

 Applications

The power quality analyser which is equipped with 4 current and voltage inputs collects and digitalises the effective values (True RMS) from currents and voltages in 40-70Hz (15-440Hz) networks. The integrated microprocessor calculates the electrical parameters from the sampling values. The relevant voltage can be defined as a phase-neutral or a phase-phase voltage for measurement in a three-phase system. 

The voltage serves the UMG 511 as a reference voltage for harmonic measurement, transient and event recording and for the flicker meter. A nominal current can be set using this for the measurement of electrical current events. The 4th current and voltage input represents a separate measurement system. However, it is generally used for measuring the current in the neutral or PE conductor or used for measuring a voltage difference between N and PE.

Added value with additional functions

The UMG 511 power quality analyser serves for the purpose of continuous monitoring of the power quality e.g. in accordance with EN 50160. This serves for the purpose of monitoring the supply power quality from the energy supply side. The UMG 511 can also be used in applications for failure analysis on the consumer side and is also used as a preventative measure for network perturbations. 

A rapid, cost-optimised and reliable communication system can be developed through the Ethernet connection. The instrument’s own homepage offers you the opportunity to call up the data or configure the instrument directly using the embedded web server. 

The large number of digital and analogue inputs and outputs offer a variety of communication systems possibilities and allows connection to PLC systems and independent control tasks. The GridVis analysis software represents a fundamental part of the standard delivery. The GridVis can be used to practically trigger analysis in accordance with EN 50160 with the click of a button. The presentation of online data and the analysis of historical data is also a benefit for finding the root cause of network problems.

Digital inputs and outputs

The 8 digital inputs of the instrument can either be used for tariff switchover, for synchronisation, to start the recording, or as other meter inputs for pulses. There are 8 programmable comparators available which can be allocated up to 4 measurement parameters as a limit value comparator. The digital outputs can also be programmed as a signal output for transients, events or as a pulse output.

Data collection and recording

The UMG 511 has an internal 256 MB flash memory for continuous recording of all measured data. The measurement value memory is freely configurable with reference to the measurement values which are to be recorded and the recording intervals. The recording interval is also the average time of the respective measurement value. In addition, the highest and lowest actual values (200ms average time) can also be recorded within the interval if you want to save the data as a graph y(t). Obviously it is also possible to store the measurement data in form of histogramms (distribution curve). 

The recording of transients and events is initiated by triggers. Transients are recorded from a period larger than 50ìs. Events such as excess currents or under/overvoltage can be safely recorded from half a period. Events are recorded with up to 16000 (programmable) half cycles as effective value recorder.