A2000
10Pages

Measurement of current, voltage, active, reactive and apparent power, power factor, active and reactive energy, harmonic distortion and harmonics 2 additional measuring inputs (optional) Precision measured values with error limits of 0.25% for U and I Depending upon model, capable of communications with Profibus-DF, 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 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. Function and Operational Principle The measuring instrument acquires instantaneous values for star-connected 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. GMC-I Messtechnik GmbH

A2000 Multifunctional Power Meter Data Storage Up to 12 measured values can be selected for storage to memory. The measuring instrument acquires these measured values once every 300 ms and stores them first to intermediate memory. These values are then averaged in accordance with the selected sampling rate and are stored to permanent memory as mean values. The sampling rate is adjustable from 300 ms to max. 24 hours. Recording is triggered by means of internally selected limit values. The duration of the recording can be set within a range of 1 minute to 31 days. Several events can thus be...

Active energy, high tariff, Active energy, low tariff, Active energy, high tariff, Active energy, low tariff, Reactive energy, high tariff, Reactive energy, low tariff, Reactive energy, high tariff, Reactive energy, low tariff, Inputs Secondary Transformer Current Primary Transformer Current Secondary Transformer Voltage Primary Transformer Voltage Time Period for Mean Power Values Synchronizing Input Energy Display The instrument is equipped with eight energy meters for the display of energy values. The following energy values appear at these displays upon shipment from the...

Synchronizing Input Function 2 Analog Inputs Synchronization of mean values, tariff switching or external control of the limit values relays - Type of input signal standard signal (20 mA/10 V) or Pt1000 - Input range for standard (4 ... 20, 0 ... 20, +20, ±10 mA or 2 ... 10, 0 ... 10, ±10, ±5 V) - Scaling of measured value for standard signal (range Lo/Hi) - Displ. dimension at Pt1000 (°C/°F) - Offset (°C/°F) at Pt1000 - Position of decimal point Outputs Limit Value Monitoring Pulse Outputs for Active or Reactive Energy Serial Interfaces - Monitored measured values (sources) - Min-max...

Measurement Inputs Voltage Inputs Phase - Phase Phase - N (ground) Overload Intrinsic Impedance Power Consumption Current Inputs Measuring Ranges Overload Power Consumption Sampling Rate Measuring Error Current Voltage Power, Energy Power Factor Frequency 4-Quadrant Operation 0 ... 500 ... 550 V, 40 ... 70 Hz 0 ... 290 ... 320 V, 40 ... 70 Hz 1.2-fold > 290 kQ < 1.1 W 0 ... 1 ... 1.2 A, 0 ... 5 ... 6 A 1.4-fold cont. 30 A / 10 s, 100 A / 3 s < 150 mW 32 samples per period and measured value NV = nominal value, MV = measured value + (0.25 % of NV + 1 digit) for MV >2 % of NV + (0.25 % of NV...

Internal Clock Terminal Assignments (only for version with data logger, LON or Profibus) Accuracy < 2.5 s/day Power Supply lithium cell, service life > 8 years Current Inputs Connection with 3 Current Transformers in 3 or 4-Phase Mains System (4L) Power Supply Supply Voltage Feature H0 230 V / 115 V ~ ± 10%, 45 ... 65 Hz 20 ... 36 V = Power Consumption max. 15 VA The instrument is not equipped with an integrated circuit breaker. Therefore, during installation, care should be taken to ensure that - the building where the instrument is installed includes a circuit breaker, - the...