A2000 Multifunctional Power Meter - GMC Instruments - #1

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3-348-980-03 16/2.08 GMC-I Gossen-Metrawatt GmbH A2000 Multifunctional Power Meter DQS certified per DIN EN ISO 9001 Reg. No.1262 QUALITY MANAGEMENT SYSTEM Applications The measuring instrument is used for the analysis of alternating current systems, in particular where conventional analog measuring instruments included in distribution systems no longer fulfill continuously growing demands. This is especially applicable where harmonic distortion and harmonics are crucial in addition to current, voltage and power. As a further range of applications, the meter is also capable of eliminating combined use of measuring instruments which are operated simultaneously along with conventional recorders and fault indicators. In combination with current and voltage transformers, the instrument performs the most important measurements required in low and medium-voltage systems. Analog outputs, limit values and interfaces are available for the monitoring and processing of measured values. A time curve is simultaneously recorded for up to 12 measured values in a failsafe system if the instrument version with integrated memory is utilized. Important measured values can be monitored continuously over a long period of time, or recording can be triggered for a specified duration by an event. In the case of event controlled recording, it is also possible to record the pre-history which lead up to the event at the same speed. This provides the user with a comprehensive overview of the pre-history which has resulted in an error. The instrument thus fulfills the function of a fault recorder significantly better than conventional paper chart recorders. Applicable Regulations and Standards Function and Operational Principle The measuring instrument acquires instantaneous values for starconnected voltages and currents at three-phase electrical systems. If no neutral is available, the instrument automatically creates a virtual neutral point. The speed at which measured values are logged depends upon the respective line frequency. Each measured value is updated 32 times per period, which allows for the acquirement of measuring signals of up to the 15th harmonic. After these values have been stored to memory, analysis and calculation of data such as delta and star-connected currents and voltages begin, as well as the determination of parameters for power, power factor, energy, harmonic distortion and harmonics. The values are calculated in accordance with DIN 40110 Part 1 and 2. All calculated values are available to the display, the serial interface, the analog outputs and the limit value monitoring system. IEC/EN 61010-1 / VDE 0411 Part 1 Safety requirements for electrical equipment for measurement, control and laboratory use DIN 43864 Current interface for pulse transmission between impulse meters and tariff devices (for pulse output) DIN EN 61326 VDE 0843 Part 20 Electrical equipment for measurement, control and laboratory use – EMC requirements IEC/EN 60529/VDE 0470 Part 1 Protection provided by enclosures (IP code) • Measurement of current, voltage, active, reactive and apparent power, power factor, active and reactive energy, harmonic distortion and harmonics • Precision measured values with error limits of 0.25% for U and I • Depending upon model, capable of communications with Profibus- DP, LONWORKS interface or RS 485 interface with Modbus RTU and other protocols • Front panel dimensions: 144 x 144 mm • Minimal installation depth of less than 60 mm • Good legibility thanks to the high contrast, 14 mm LED display • Continuous recording of selected measured values for load profile and statistical purposes (optional) • Interference recording function with high speed recording of events and pre-event history (optional) • Electrically isolated current inputs • Two limit value contacts which can be assigned as desired to measured values