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Specification for a IEC 61000-4-30 Class A compliant Power Quality Recorder The device shall be a Class A multifunctional measurement device with the main purpose of measure and monitor the power quality according to IEC 62586-1 product standard. The device shall encompass all important quantities for the assessment of electrical supply networks. The recorder shall acquire, display, analyze and communicate measured electrical quantities of the electrical network. The following electrical quantities have to be acquired at a minimum: AC voltage, AC current, frequency, harmonics, interharmonics, flicker, power, energy, power factor, THD. The acquisition and calculation has to be according to the standard IEC 61000-4-30 Class A power quality measurement standard. The device has to provide the possibility of long term data evaluation directly in the device with the possibility of displaying an report in accordance with power quality standard such as EN 50160. The device shall come with an integrated display providing easy display of measured real time quantities of the electrical network. For configuration and evaluation the power quality recorder has to feature an integrated webserver providing easy to use parameterization and evaluation functionality. No additional software for device settings shall be used. The device must incorporate at least 2GB internal memory for historical data. The device must allow connection over MODBUS RTU Master of up to 8 slave MODBUS RTU RTU devices. Measurement inputs, binary inputs and outputs 4 inputs for AC voltage measurements up to 400V (L-N/PE), 690V (L-L) rated input voltage 4 inputs for AC current measurements, rated input current AC 1A to 5A Sampling rate per channel: 10,24 kHz 2 binary inputs and 2 binary outputs It must be possible to expand I/Os Continuous measured of the following quantities: . Alternating voltage U . Alternating current I . Power frequency f (fundamental component) . Active power P . Reactive power Q . Apparent power S . Power measurements W . Active power factor cos phi . Measurements up to the 63rd harmonics order . Interharmonics of voltage and current Event-specific measured value acquisition: Min./max./mean values with configurable intervals - (30 s, 1 min, 10 min, 15 min, 30 min, 1 h, or 2 h) Recording of events: voltage dips, overvoltages, interruptions: with 1/2 cycle continuous monitoring and recording with and time stamp (duration) Limit value violations Transient detection (100microsseconds) Waveform capture of triggered events of voltage and current. Up to 3seconds records must be possible. Harmonic Directions Harmonics of voltages, currents, and powers up to the 63rd order according to the IEC 61000-4-7 standard. The following values are given for each harmonic: • RMS value (for power: RMS value and sign) • Phase angle The sign of the active power of the single harmonic can indicate the direction of the power flow of this harmonic in a system from the device installation point of view. Thus, it is possible to indicate loads that generate the harmonics and that are probably the cause of the harmonics. For voltage and current, the given phase angle of the harmonic refers to the voltage of the fundamental component in the respective phase. The phase angle between the current harmonic and the corresponding voltage harmonic is used to calculate the sign of the active harmonic power. IEC 61000-4-30 Ed.2 measurement accuracy and range The accuracy and range specifications of the power quality recorder shall match the IEC 610004-30 Ed.2 standard. Measurement Unit Measurement Range Operat. Measurem. Uncertainty acc. to IEC 62586-1, Class A, IEC 61000-4-30, IEC 61000-4-7, IEC 61000-4-15 Frequency f Hz ±10 mHz in the measuring ranges: 50 Hz (±15 %): 42.5 Hz bis 57.5 Hz 60 Hz (±15 %): 51.0 Hz bis 69.0 Hz 10 mHz > 2 V required Voltage V 10 % to 150 % Udin ±0.1 % Udin AC 57.73 V to 400 V (autorange) IEC 61000-4-30 Class A: to AC 230 V: 200 % overvoltage Flicker Pst, Plt - Pst, Plt: 0.2 to 10 Acc. to class A, IEC 61000-4-30: Pst: ±5 %; Plt: ±5 %, Accuracy Pinst: ±8 % Undervoltages (dips) and overvoltages (swells) of the mains voltage V, s - Amplitude ±0.1 % Udin; 1 cycle; Voltage interruptions of the mains voltage V, s - Duration: 1 cycle Voltage unbalance % Measurement range 0.5 % to 5.0 % ±0.1 % Harmonics of voltage % or V 10 % to 200 % acc. to IEC 61000-2-4, class 3 IEC 61000-4-7, class 1: Condition: Vm > 1 % Vrated Maximum error: ±5 % Vm ------------------------------Condition: Um < 1 % Vrated Maximum error: ±0.05 % Vrated Udin: Primary nominal voltage, corresponds to the primary rated voltage Vm: Measured value Vrated: Rated voltage Communication RJ45 Ethernet interface with: o IEC 61850 server o Modbus TCP server o SNMP Server o HTTP Server RS485 interface with 9-pin D-sub socket and Modbus RTU Master protocol for up to 8 slave Modbus RTU devices Integrated switch to connect other field devices Synchronisation Internal RTC clock External synchronization via NTP Indications, LED Minimum 4 configurable LEDs for indication of device status, limit value violations and communication status Display and function keys Integrated Display with configurable display content: List view Measured values screen Min 2 function keys for easy navigation Auxiliary Power supply Rated input voltage: 24 VDC to 250 VDC (+/-20%); 110 VAC to 230AC (+/-20%), 50Hz/60Hz; Memory and data exchange formats Minimum 2-GB memory with the possibility of data export by using PQDif (IEEE1159.3), COMTRADE (IEEE Std C37.111) and CSV-file and data exchange formats. Configuration, visualization and evaluation on board functions Power quality values and other events are displayed directly via a web browser with HTML pages. The following evaluations must be possible: Online and operational measured values and messages from the device and from the relevant Modbus slave device displayed via HTML and on the display Event evaluations und power quality recordings as well as mean values displayed in tables or graphs Grafical visualization of events on HTML Power Quality Reports generated according to the EN 50160 and ITIC/CBEMA event curves standard Logging of transient data Data export Recorded data must be exported in the following standard formats: CSV data PQDIF data – IEEE1159.3: PQDIF for PQ recordings (events, measurements, logs) COMTRADE data – IEC 60255-24/IEEE Std C37.111: Operating conditions Unless otherwise specified the Power Quality Recorder must met the following requirements: Operating temperature: -25°C to +55°C Maximum relative humidity: 95% of No condensation Max. altidude: 2000m Only indoor operation Standards and norms The device has to be developed and tested in accordance with the applicable product standard Product standard IEC 60068 Electrical tests o IEC EN 61000-6-2 o IEC EN 61000-6-4 o IEC EN 61010-1 o IEC EN 61010-2 Mechanical tests o IEC 60068