Camille Bauer
12Pages

AVOIDING POWER QUALITY PROBLEMS COMBINED POWER QUALITY AND ENERGY CONSUMPTION MONITORING LINAX PQ-SERIES LINAX PQ3000 ▪ LINAX PQ5000

POWER QUALITY POWER SYSTEM MONITORING Comprehensive instrument for power quality monitoring in electric mains Traditionally, power quality monitoring is only conducted as a reaction to trouble such as device failure, plant malfunctions, process interruptions or communication breakdowns. However, all these problems cost money and nobody wants to experience the same thing again just to be able to create a corresponding record for analysis. Therefore, the biggest advantage of continuous power quality monitoring is that users put themselves in a position to proactively build up their knowledge...

CLEAR High resolution, colour TFT display for the pin-sharp indication of measured data Consistently visible status information (alarms, password protection, data recording, time/date and much more) Clear Design INTUITIVE Language-specific plain text menu navigation Topical arrangement of measured value information for quick data access Service area for maintenance and commissioning MULTIFUNCTIONAL Certified power quality monitoring according to IEC 61000-4-30 Ed. 3, class A Acquisition of energy consumption: Meters and load profiles Plant condition monitoring FLEXIBLE Applicable in all...

POWER SYSTEM MONITORING POWER QUALITY AVOIDING POWER QUALITY PROBLEMS - THROUGH CONTINUOUS MONITORING Disruptions of the energy supply may result in production or equipment outages. Often people do not react until great financial damage has been caused. Yet, many of these incidents could be avoided if the signs were recognised in the continuous monitoring of the situation. Any form of power quality monitoring provides both a statistical evaluation allowing the comparison with standards (e.g. EN 50160) or supply contracts as well as records of events in the grid (e.g. voltage dips). This...

POWER SYSTEM MONITORING POWER QUALITY MONITORED VOLTAGE PHENOMENON Mains frequency POSSIBLE CONSEQUENTIAL PROBLEMS Magnitude of supply voltage Loss of power generators Large load changes Changes in grid load Instability of the mains power supply Disruption of equipment System shut-down •• Loss of data •• Flicker and rapid voltage changes (RVC) Supply voltage dips and swells Frequent load changes Start of engines Large load changes Short circuit, contact to earth •• Thunderstorm •• Power supply overload •• Feed-in of renewable energies such as wind or photovoltaic energy Short circuit Blown...

POWER QUALITY POWER SYSTEM MONITORING MEASURED VALUES APPLICATION MEASURED VALUE GROUP INSTANTANEOUS VALUES U, I, IMS, P, Q, S, PF, LF, QF ... Angle between voltage phasors Min/max of instantaneous values with time stamp EXTENDED REACTIVE POWER ANALYSIS Total reactive power, fundamental frequency, harmonics cos^, tan^ of fundamental frequency with min values in all quadrants HARMONICS ANALYSIS (ACCORDING TO IEC 61000-4-7) Total harmonics content THD U/I and TDD I Individual harmonics U/I up to 50th IMBALANCE ANALYSIS Symmetrical components (positive, negative, zero sequence...

POWER SYSTEM MONITORING POWER QUALITY DATA RECORDING Apart from the automatic recording of power quality statistics, the high-performance data logger provides the following recording options: PERIODIC DATA This feature allows to record the time course of measured variables. Averaged measurements or meter contents serve as base and are saved in regular intervals. Typical applications are the acquisition of load profiles (intervals of 10s to 1h) or the determination of the energy consumption from the difference of meter readings. For both categories pre-defined courses are available, based on...

POWER QUALITY POWER SYSTEM MONITORING OPERATION AND ANALYSIS OPERATION The local operation at the device itself and the access via web interface are structured identically. One can access the available measured data, parametrise the instrument or use the service functions via the language-specific, topically structured menu navigation. The status bar at the top right, uniformly shows the statuses of alarm monitoring, the password protection system, the data recording and the UPS as well as time and date. Apart from the details of the PQ statistics, all data are available via both the local...

POWER QUALITY TECHNICAL DATA INPUTS NOMINAL CURRENT 1 ... 5 A (max. 7.5 A) Maximum 7.5 A Overload capacity 10 A permanent Measurement range 2 (2mA) RCM with connection monitoring • Measuring transformer Residual current transformer 500/1 up to 1000/1 A • Alarm limit 30 mA up to 1 A NOMINAL VOLTAGE Maximum Overload capacity Nominal frequency BASIC UNCERTAINTY ACCORDING IEC/EN 60688 POWER SUPPLY VARIANTS Nominal voltage 100...230 V AC/DC (PQ5000) THD U, I Active energy Reactive energy INTERFACES ETHERNET Physics Mode Protocols Standard Ethernet 100Base TX; RJ45 socket 10/100...

POWER QUALITY POWER SYSTEM MONITORING Transformers for fault current detection see accessory current transformers EXTENSIONS PQ3000 Maximum one extension with analog outputs may be provided per device.

POWER QUALITY SMARTCOLLECT SMARTCOLLECT SERVER SMARTCOLLECT is a data management software which can acquire measured data in an easy manner and store the same in an open MS SQL database. This software offers basic functionalities for data analysis and for easy energy monitoring as well as the easy preparation and disposal of reports. Providing a mature graphic user interface, the SMARTCOLLECT software is clearly structured and easily operated. SMARTCOLLECT is modularly designed and permits supplementing modules or functions at any time. CUSTOMER BENEFITS • Easy data communication via Modbus...

Subject to change without notice ▪ SM-1039-000-03-EN-04.18 Camille Bauer Metrawatt AG Aargauerstrasse 7 ▪ 5610 Wohlen ▪ Switzerland TEL +41 56 618 21 11 ▪ FAX +41 56 61