ISKRA MC774
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ISKRA PQM MC774 Datasheet download
Power Quality Analyzer
Size: 144 x 144 mm
Ordering code: MC774 S H E S N N N
I/O module: 2 Pulse output
Communication: Ethernet RJ-45 & USB
Auxiliary Power Supply: 70-300VDC & 80-276VAC
Accuracy: Class 0.2S for active energy
Software: MiQen, ISKRA setting and acquisition Software
Feature;
Tel: 081-762-3248
Technical Documentation 1 MC774 Quality Analyser POWER QUALITY ANALYZER MC774 Class A measuring accuracy according to EN61000-4-30. Evaluation of power quality in compliance with EN 50160. Voltage and current auto range measurements up to 1000 VRMS, 12.5 A. 4 voltage and 4 current channels with 32μs sampling time. Wide frequency measurement range 16 Hz – 400 Hz. Up to three independent communication ports. Support for GPS, IRIG-B and NTP real time synchronisation. Up to 20 inputs/outputs. Technical Documentation 2 MC774 Quality Analyser FEATURES o Evaluation of the electricity supply quality in compliance with EN 50160 with automatic report generation. o Measurements of instantaneous values of more than 140 quantities including harmonics, flicker, power line signalling voltage, unbalance … o Class A (0.1%) accuracy in compliance with EN61000-4- 30. o Four quadrant energy measurement with class 0.2S for active energy, 8 programmable counters, up to four tariffs, tariff clock … o Automatic range selection of 4 current and 4 voltage channels (max. 12.5 A and 1000 VRMS) with 32 kHz sampling rate. o Recording all measured parameters including all voltage and current harmonics up to 65th, 32 adjustable alarms, anomalies and quality reports in the internal memory. o Measurements of 40 minimal and maximal values in different time intervals (from 1 to 256 periods). o Frequency range from 16 Hz to 400 Hz. o Up to three independent communication ports (RS 232/485 up to 115,200 bit/s, Ethernet and USB 2.0). o MODBUS and DNP3 communication protocols. o Support for GPS, IRIG-B (modulated and digital) and NTP real time synchronisation. o Up to 20 inputs and outputs (analogue inputs/outputs, digital inputs/outputs, alarm/watchdog outputs, pulse input/outputs, tariff inputs). o Multilingual support. o Universal power supply (two voltage ranges). o 144 mm square panel mounting. o User-friendly setting and evaluation software, MiQen. DESCRIPTION MC774 is an important device for permanent monitoring of power quality from its production (especially renewable), transmission, distribution to final consumers, who are most affected by insufficient quality of voltage. Lack of information about supplied quality of voltage can lead to unexplained production problems and malfunction or even damage to equipment used in production process. Therefore, MC774 can be used for utility purposes (evaluation against standards) as well as for industry purposes (monitoring supplied power quality). MC774 performs measurements in compliance with regulatory requested standard EN 61000-4-30 and evaluates recorded parameters for analysis according to parameters defined in European supply quality standard EN 50160:2011. Moreover MC774 stores measurements and quality reports in internal memory for further analysis over recorded measurements. By accessing recorded or real time values from multiple instruments installed on different locations it is possible to gain the overall picture of systems’ behaviour. This can be achieved with regard to MC774 accurate internal real time clock and wide range of synchronization sources support, which assure accurate, time-stamped measurements from dislocated units. All required measurements, weekly PQ reports and alarms can also be stored locally in an internal memory. Stored data can be then transferred to a memory card or accessed through communication for post analysis. APPLICATION AND BENEFITS MC774 Quality Analyser can be used as a standalone PQ monitoring device for detection of local PQ deviations. For this purpose it is normally positioned at the point-ofcommon-coupling (PCC) of small and medium industrial and commercial energy consumers to monitor quality of delivered electric energy or at medium or low voltage feeders to monitor, detect and record possible disturbances caused by (unauthorized) operation of consumers. Identifying relevant fixed measuring points is the most important task prior to complete system installation. This system itself will not prevent disturbances in network but it will help diagnose their origin and effects. And this is possible only with system approach by using time synchronized meters and predefined measuring parameters relevant for each individual measuring point. Therefore the most extensive benefits are achieved when MC774 is used as a part of an energy monitoring system comprising of strategically positioned meters connected to MiSMART software solution. This three-tier middleware software represents a perfect tool for utility companies, energy suppliers and other parties on both ends of supplydemand chain. MiSMART data collector with “push” communication system allows automatic records of all predefined measuring parameters. They are stored in MiSMART database, while leaving a copy of same parameters stored locally in memory of each device as a backup copy. Database records in XML format can be searched and viewed in tabelaric and graphical form using MiSMART client or other third-party application software. Database records can involve numerous parameters of three-phase system, power quality parameters, physical parameters (temp., pressure, wind speed …) as well as alarms and detailed time-stamped event logs. Technical Documentation MC774 Quality Analyser 3 COMPLIANCE WITH STANDARDS Measurements and reports of power (voltage) quality (PQ) indexes are only useful when can be compared with measurements and reports from other PQ measuring devices in the supply network and evaluated against agreed limits for assessment of measured PQ indexes to establish an overall view about PQ issues in the network. For this purpose it is essential to follow guidelines described in series of international and local standards. Beside requirements for safe operation (LVD directive) and immunity against more and more demanding disturbances (EMC directive), PQ measuring depends on two levels of standardization: Procedures for proper acquirement of PQ indexes, their timed aggregation and required accuracy are described in a standard IEC EN 61000-4-30 and two supplementary standards IEC EN 61000-4-7 (harmonics), IEC EN 61000-4-15 (flickermeter) Procedures for evaluation of measured PQ indexes according to limit levels described in European standard EN 50160 MC774 Quality Analyser follows required procedures and meets the precision requirements for class A measuring device as described in standard IEC EN 61000-4-30. It uses acquired measurements to perform automatic evaluation of PQ according to EN 50160 and issues weekly reports. In case if certain PQ indexes fail to meet required quality it also shows details of problematic measurements and time of occurrence of discrepancy. Standard EN Description 61010-1: 2010 Safety requirements for electrical equipment for measurement, control and laboratory use 61557-12:2008 Electrical safety in LV distribution systems up to 1kV a.c. and 1.5kV d.c. – Combined performance measuring and monitoring devices for electrical parametrs 61000-4-30:2009 Electromagnetic compatibility (EMC) – Power quality measurements methods 61000-4-7:2003 + A1:2009 Electromagnetic compatibility (EMC) – General guide on harmonics and interharmonics measurements 61000-4-15:2010 Electromagnetic compatibility (EMC) – Flickermeter 50160:2011 Voltage characteristics of electricity supplied by public distribution networks 62053-22:2003 Electricity metering equipment - Static meters for active energy (classes 0,2 S and 0,5 S) 62053-23:2003 Electricity metering equipment - Static meters for reactive energy (classes 2 and 3) 61326-1:2006 EMC requirements for electrical equipment for measurement, control and laboratory use 60529:1997/A1:200 0 Degrees of protection provided by enclosures (IP code) 60068-2-1/ -2/ - 6/ -27/-30 Environmental testing (-1 Cold, -2 Dry heat, -30 Damp heat, -6 Vibration, -27 Shock) UL 94 Tests for flammability of plastic materials for parts in devices and appliances Table 1: List of applicable standards Technical Documentation 4 MC774 Quality Analyser VOLTAGE QUALITY Voltage Quality is well defined term (sometimes also termed Power Quality – PQ) and is covered with a selection of parameters, each of which represents certain phenomenon. They represent only most common types of phenomena which can describe operation of electrical network with closest approximation. MC774 Quality Analyser measures, detects, stores and evaluates parameters, which are defined in several standards. Evaluation is by default performed according to limits set in European standard EN50150. Beside that users can always alter parameters according to their requirements or according to immunity of their equipment which operates within analyzed power network. PQ recording settings Figure 1 Settings for power quality parameters are set with setting and monitoring software MiQen Characteristic parameters that describe power quality are shown in table 1: Phenomena PQ Parameters Frequency variations Frequency distortion Voltage variations Voltage fluctuation Voltage unbalance Voltage changes Rapid voltage changes Flicker Voltage events Voltage dips Voltage interruptions Voltage swells Harmonics & THD Harmonics Interharmonics Signalling voltage Table 2 Voltage quality parameters as defined in EN50160 PQ reports PQ report is issued on a basis of chosen PQ parameters as well as information about a period of tracking and place of tracking (type of network). Each record is internally stored for later analysis. Settings software allows user to quickly view PQ report with limit lines and compliance results. Figure 2 Viewing power quality report parameters and log details with setting software MiQen To analyze in details which and when certain parameters are outside limit lines it is possible to view time stamped details and with that establish true origin of anomaly and its consequences. Technical Documentation MC774 Quality Analyser 5 MEASUREMENTS Online measurements Online measurements are available on display or can be monitored with setting and monitoring software MiQen. Readings on display are performed continuously with refresh time dependent on set average interval whereas rate of readings monitored with MiQen is fixed and refreshed approx. each second. For better overview over numerous readings, they are divided into several groups, which contain basic measurements, min. and max. values, harmonics, PQ parameters and alarms. Each group can represent data in visually favored graphical form or detailed tabelaric form. Latter allows freezing readings and/or copying data into various report generation software tools. Interactive instrument Additional communication feature of a device allows interactive handling with a dislocated device as if it would be operational in front of user. This feature is useful for presentations or product training. Selection of available quantities Available online measuring quantities and their appearance can vary according to set type of power network and other settings such as; average interval, max. demand mode, reactive power calculation method … Complete selection of available online measuring quantities is shown in a table on the next page. Figure 3 Online measurements in graphical form – phase diagram and daily total active power consumption histogram Figure 4 Online measurements in tabelaric form Figure 5 Online harmonic measurements in graphical form Technical Documentation 6 MC774 Quality Analyser Meas. type Measurement 3-phase 4- wire 3-phase 3- wire 1-phase Comments Phase Voltage measurements U1-3_RMS 1ph UAVG_RMS Uunbalance_neg_RMS Uunbalance_zero_RMS U1-3_DC 1ph DC component of phase voltages Current I1-3_RMS 1ph ITOT_RMS IAVG_RMS Power P1-3_RMS 1ph PTOT_RMS Q1-3_RMS 1ph reactive power can be calculated as a squared QTOT_RMS difference between S and P or as sample delayed S1-3_RMS 1ph STOT_RMS PF1-3_RMS 1ph PFTOT 1-3_RMS 1ph Harmonic analysis THD-U1-3 1ph THD-I1-3 1ph TDD-I1-3 1ph U1-3_harmonic_1-63_% 1ph % of RMS or % of base U1-3_harmonic_1-63_ABS 1ph U1-3_harmonic_1-63_ 1ph U1-3_inter-harmonic_% 1ph monitoring up to 10 different fixed frequencies. % of U1-3_inter-harmonic_ABS 1ph RMS or % of base U1-3_signaling_% 1ph monitoring of signalling (ripple) voltage of set U1-3_signaling_ABS 1ph frequency. % of RMS or % of base I1-3_harmonic_1-63_% 1ph % of RMS or % of base I1-3_harmonic_1-63_ABS 1ph I1-3_harmonic_1-63_ 1ph Flickers Pi1-3 1ph Instantaneous flicker sensation measured with 150 samples / sec (original sampling is 1200 smpl/sec) Pst1-3 1ph 10 min statistical evaluation (128 classes of CPF) Plt1-3 1ph derived from 12 Pst acc. to EN 61000-4-15 Miscellaneous K-factor1-3 1ph Current Crest factor I1-3 1ph Phase to phase Voltage measurements Upp1-3_RMS UppAVG_RMS THD-Upp1-3 Upp1-3_harmonic_1-63_% % of RMS or % of base Upp1-3_harmonic_1-63_ABS Upp1-3_harmonic_1-63_ Uunderdeviation 1ph Uunder. and Uover. are calculated for phase or phase-toU phase voltages regarding connection mode. overdeviation 1ph For more information see MC774 Quality Analyser User's manual Technical Documentation MC774 Quality Analyser 7 Meas. type Measurement 3-phase 4-wire 3-phase 3-wire 1-phase comments Flickers Pi_pp1-3 Pst_pp1-3 Phase-to-phase flickers Plt_pp1-3 Metering Energy Counter E1-8 each counter can be dedicated to any of four quadrants (P-Q, import-export, L-C). Total energy is a sum of one counter for all tariffs. Tariffs can be fixed, date/time dependent or tariff input dependent E_TOT_1-8 Active tariff Auxiliary Aux. line channel UNEUTRAL-EARTH aux. voltage is dedicated for neutral-earth meas. only measurements INEUTRAL_meas measured neutral current with 4th current input INEUTRAL_calc calculated neutral current INEUTRAL_err error neutral current (difference between measured and calculated) Maximum Maximum demand demand MD_I1-3 1ph measurements MD_Pimport MD_Pexport MD_Qind MD_Qcap MD_S Min and max Min and max measurements U1-3_RMS_MIN 1ph U1-3_RMS_MAX 1ph Upp1-3_RMS_MIN Upp1-3_RMS_MAX I1-3_RMS_MIN 1ph I1-3_RMS_MAX 1ph P1-3_RMS_MIN 1ph P1-3_RMS_MAX 1ph PTOT_RMS_MIN 1ph PTOT_RMS_MAX 1ph S1-3_RMS_MIN 1ph S1-3_RMS_MAX 1ph STOT_RMS_MIN 1ph STOT_RMS_MAX 1ph freqMIN freqMAX Other Miscellaneous measurements freqMEAN Internal temp. Date, Time Last Sync. time UTC GPS Time If GPS receiver is connected to dedicated RTC time synchronization input GPS Longitude GPS Latitude GPS Altitude For more information see MC774 Quality Analyser User's manual Table 3 Selection of available measurement quantities Technical Documentation 8 MC774 Quality Analyser RECORDER A built-in recorder (8Mb) enables storing measurements, detected alarms and PQ reports with details. It supports recording of all measured quantities including voltage and current harmonics up tp 65th in 4 configurable partitions. For each partition is possible to set storage interval and other recording parameters. Fifth partition is used for recording alarms. Each alarm triggered by preset limit lines is stored in a form of alarm i.d. and its timestamp. Sixth partition is used for PQ reports. Each report in recorder is identified by a monitoring interval (date). Last partition is used for PQ report details. They represent time stamped PQ values that are outside PQ limit lines. Content of recorder can be viewed with monitoring software MiQen in a detailed tabelaric or visually favoured graphical form. Memory card MC774 Power Quality Analyzer & Recorder is equipped with a front panel slot for full sized SD memory card that supports capacity up to 2 GB. It is intended for downloading internally stored data, uploading setting file and performing firmware upgrade. ALARMS Alarms are powerful tool for MC774 Quality Analyser control and supervision features. Devices’ performance can with this features reach beyond measuring and analyzing power network. MC774 Quality Analyser supports recording and storing of 32 alarms in four groups. A time constant of maximal values in a thermal mode, a delay time and switch-off hysteresis are defined for each group of alarms. For each parameter is possible to set limit value, condition and alarm activation action (sound signal and/or digital output switch if available). All alarms are also stored in internal memory for postanalysis. Figure 6: Setting recorder parameters and viewing memory consumption information Figure 7 Viewing recorder content in tabelaric and graphical form Figure 8 Setting and viewing alarms Technical Documentation MC774 Quality Analyser 9 REAL TIME SYNCHRONISATION Synchronized real-time clock (RTC) is an essential part of any Class A analyzer for proper chronological determination of various events. Without RTC synchronization MC774 acts as a Class S device. To distinct cause from consequence, to follow a certain event from its origin to manifestation in other parameters it is very important that each and every event and recorded measurement on one instrument can be compared with events and measurements on other devices. Even if instruments are dislocated, which is normally the case in electro distribution network events have to be timecomparable with accuracy better than a single period. For this purpose instruments normally support highly accurate internal RTC. Still this is not enough, since temperature is location dependant and it influences its precision. For that reason it is required to implement periodical RTC synchronization. MC774 Quality Analyzer supports three types of RTC synchronization. GPS time synchronization: 1pps and serial RS232 communication with NMEA 0183 sentence support. GPS interface is designed as 5 pole plugable terminal (+5V for receiver supply, 1pps input and standard RS232 communication interface). Proposed GPS receiver is GARMIN GPS18x. IRIG time code B (IRIG-B): Unmodulated (DC 5V level shift) and modulated (1 kHz) serial coded format with support for 1pps, day of year, current year and straight seconds of day as described in standard IRIG-200-04. Supported serial time code formats are IRIG-B007 and IRIG-B127. Interface for modulated IRIG-B is designed as BNC-F unmodulated IRIG-B is designed as pluggable terminal. Network time protocol (NTP): Synchronization via Ethernet requires access to a NTP server. NOTE! NTP can usually maintain time to within tens of milliseconds over the public Internet, but the accuracy depends on infrastructure properties - asymmetry in outgoing and incoming communication delay affects systematic bias. It is recommended that dedicated network rather than public network is used for synchronisation purposes. COMMUNICATION MC774 Quality Analyzer has a wide variety of communication possibilities to suit specific demands. It is equipped with standard communication port COM1 and auxiliary communication port COM2. This allows two different users to access data from a device simultaneously and by using TCP/IP communication, data can be accessed worldwide. COM2 port is always present as a part of synchronization module C. It is available as a general purpose communication port when it is not used for time synchronization purposes. Different configurations are possible (to be specified with an order). Configuration COM1 COM2(2) 1 RS232/485 / 2 RS232/485 RS232/485 3 USB / 4 USB RS232/485 5 (1) Ethernet & USB / 6 (1) Ethernet & USB RS232/485 (1) Galvanic separation between Eth. and USB is 1 kVACRMS (2) COM2 is NOT available if GPS time synchronization is used Table 3: List of communication configurations MC774 Quality Analyser supports standard communication protocols MODBUS RTU, TCP and DNP3 L1. Additionally it supports proprietary PUSH communication mode, which is used in system applications where devices send predefined readings in predefined time intervals in XML format. Web based software MiSMART collects data and stores it into database. Stored data can then be viewed with MiSMART client software. For more information about PUSH communication mode and XML format see MC774 Quality Analyser User's manual GP K 22.444.053. Figure 9 MiSMART client window Technical Documentation 10 MC774 Quality Analyser TECHNICAL DATA Measurement inputs Nominal frequency range 50, 60 Hz Measuring frequency range 16−400 Hz Voltage measurements: Number of channels 4 (1) Sampling rate 31 kHz Min. voltage for sync. 1 Vrms Nominal value (UN) 500 VLN , 866 VLL Max. measured value (cont.) 600 VLN ; 1000 VLL Max. allowed value 1.2 × UN permanently 2 × UN ; 10 s Consumption < U2 / 4.2MΩ per phase Input impedance 4.2MΩ per phase (1) 4 th channel is used for measuring U EARTH-NEUTRAL Current measurements: Number of channels 4 Sampling rate 31 kHz Nominal value (INOM) 1 A, 5 A Max. measured value (I1-I3 only) 12.5 A sin. Max. allowed value (thermal) 15 A cont. ≤ 300 A; 1s Consumption < I2 × 0.01Ω per phase System: Voltage inputs can be connected either directly to lowvoltage network or via a VT to higher voltage network. Current inputs can be connected either directly to lowvoltage network or shall be connected to network via a corresponding CT (with standard 1 A or 5 A outputs). For more information about different system connections see CONNECTION on page Napaka! Zaznamek ni definiran.. Basic accuracy under reference conditions Accuracy is presented as percentage of reading of the measurand except when it is stated as an absolute value. Measurand Accuracy Voltage L-N, L-L ± 0.1% acc. to EN 61557-12 Current ± 0.1% acc. to EN 61557-12 Active power (IN = 5A) ± 0.2% acc. to EN 61557-12 Active power (IN = 1A) ± 0.5% acc. to EN 61557-12 Active energy Cl. 0.2S acc. to EN 62053-22 Reactive energy Cl.2 acc. to EN 62053-23 Frequency (f) ± 0.01Hz acc. to EN 61557-12 Power factor (PF) ± 0.5% acc. to EN 61557-12 THD (U) ± 0.3% acc. to EN 61557-12 THD (I) ± 0.3% acc. to EN 61557-12 Real time clock (RTC) < ± 1s / day acc. to IEC61000-4- 30 All values required for PQ analysis, which should be measured according to IEC61000-4-30 correspond to Class A accuracy. For complete overview of accuracy for all measured parameters and measuring ranges see Users’ manual (doc. no. GB K 22.444.053) on page 143. INPUT / OUTPUT modules MC774 Quality Analyser is equipped with two main I/O slots, two auxiliary I/O slots and special time-synchronisation module. The following I/O modules are available: Module type Number of modules per slot Main slot Aux slot Analogue output (AO) 2 / Analogue input (AI) 2 / Digital output (DO) 2 8 Digital input (DI) 2 8 Bistable Digital output (BO) 1 / Status output (WO) 1 + 1xDO / Table 4: List of available I/O modules Analogue input (AI): Three types of analogue inputs are suitable for acquisition of low voltage DC signals from different sensors. According to application requirements it is possible to choose current, voltage or resistance (temperature) analogue input. They all use the same output terminals. MiQen software allows setting an appropriate calculation factor, exponent and required unit for representation of primary measured value (temperature, pressure, wind speed …). Technical Documentation MC774 Quality Analyser 11 DC current input: Nominal input range –20…0…20 mA (±20%) input resistance 20 Ω accuracy 0.5 % of range temperature drift 0.01% / °C conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended DC voltage input: Nominal input range –10…0…10 V (±20%) input resistance 100 kΩ accuracy 0.5 % of range temperature drift 0.01% / °C conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended Resistance (temperature) input: Nominal input range (low)* 0 - 200 Ω (max. 400 Ω) PT100 (-200°C–850°C) Nominal input range (high)* 0 – 2 kΩ (max. 4 kΩ) PT1000 (-200°C–850°C) connection 2-wire accuracy 0.5 % of range conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended * Low or high input range and primary input value (resistance or temperature) are set by the MiQen setting software Analogue output (AO): Output range 0…20 mA Accuracy 0.5% of range Max. burden 150 Ω Linearization Linear, Quadratic No. of break points 5 Output value limits 120% of nominal output Response time (measurement and analogue output) depends on set general average interval (0.1s – 5s) Residual ripple < 1 % p.p. Outputs may be either short or open-circuited. They are electrically insulated from each other and from all other circuits. Output range values can be altered subsequently (zoom scale) using the setting software, but a supplementary error results. Digital input (DI) Purpose Tariff input, Pulse input, General purpose digital input Max. current 8 mA (48V), <0.6mA (110, 230V) SET voltage 40...120 % of rated voltage RESET voltage 0...10 % of rated voltage Tariff input Main slot only Rated voltage (5…48), 110, 230 ± 20% VAC/DC Frequency range 45…65 Hz Pulse input Main slot only Rated voltage 5 - 48VDC Min. pulse width 0.5 ms Min. pulse period 2 ms Digital input (5…48), 110, 230 ± 20% VAC/DC Min. signal width 20 ms Min. pause width 40 ms Digital output (DO, BO) Type Relay switch Purpose Alarm output, General purpose digital output Rated voltage 230 VAC/DC ± 20% max Max. switching current 1000 mA (main slot) 100 mA (aux. slot, DO only) Contact resistance ≤ 100 mΩ (100 mA, 24V) Impulse Max. 4000 imp/hour Min. length 100 ms Type Optocoupler open collector switch (main slot only) Purpose Pulse output Rated voltage 40 VAC/DC Max. switching current 30 mA (RONmax = 8Ω) Pulse length programmable (2 … 999 ms) Technical Documentation 12 MC774 Quality Analyser Status (watchdog) output (WO) Time synchronisation input Digital input GPS or IRIG-B TTL 1pps voltage level TTL level (+5V) Time code telegram RS232 (GPS) DC level shif (IRIG-B) AM analogue input IRIG-B AM modulated Carrier frequency 1 kHz Input impedance 600 Ohms Amplitude 2.5VP-Pmin, 8VP-Pmax Modulation ration 3:1 – 6:1 Universal Power Supply Standard (high): CAT III 300V Nominal voltage AC 80 … 276 V Nominal frequency 40 … 65 Hz Nominal voltage DC 70 … 300 V Consumption (max. all I/O) < 8VA Power-on transient current < 20 A ; 1 ms Optional (low): CAT III 300V Nominal voltage AC 48 … 77 V Nominal frequency 40 … 65 Hz Nominal voltage DC 19 … 70 V Consumption (max. all I/O) < 8VA Power-on transient current < 20 A ; 1 ms Safety: Protection: protection class II functional earth terminal must be connected to earth potential! Voltage inputs via high impedance Double insulation for I/O ports and COM ports Pollution degree 2 Installation category CAT II ; 600 V (measuring inputs) CAT III ; 300 V Acc. to EN 61010-1 Test voltages UAUXI/O, COM1: 3510 VACrms UAUXU, I inputs: 3510 VACrms U, I inputsI/O, COM1: 3510 VACrms HV I/O I/O, COM1: 3510 VACrms U inputsI inputs: 3510 VACrms Mechanical Dimensions 144 × 144 ×100 mm Mounting Panel mounting 144×144 mm Required mounting hole 137 × 137 mm Enclosure material PC/ABS Flammability Acc. to UL 94 V-0 Weight 550 g Enclosure material PC/ABS Acc. to UL 94 V-0 Ambient conditions: Ambient temperature K55 temperature class Acc. to EN61557-12 -10…55 °C Storage temperature -40 to +70 °C Average annual humidity 90% r.h. (no condensation) Pollution degree 2 Enclosure protection IP 40 (front plate) IP 20 (rear side) Installation altitude 2000 m Real time clock A built-in real time clock is also without external synchronization very stable when device is connected to auxiliary power supply. For handling shorter power interruptions without influence on RTC, device uses high capacity capacitor. It ensures auxiliary supply (for internal RTC only) for more than two days of operation. Type Low power embedded RTC RTC stability < 1 sec / day Connection cables MC774 Quality Analyser is equipped with European style pluggable terminals for measuring voltages, auxiliary supply, communication and I/O modules. Measuring current cables shall be attached as through-hole connection without screwing. NOTE! Stranded wire must be used with insulated end sleeve to assure firm connection. Voltage inputs (4) 2.5 mm2 , AWG 24-12 single wire Current inputs (3) Ø 6 mm one conductor with insulation Supply (3) 2.5 mm2 , AWG 24-12 single wire Com (5), I/O (6) 2.5 mm2 , AWG 24-12 single wire Technical Documentation MC774 Quality Analyser 13 MiQen - setting and acquisition Software MiQen software is intended for supervision of MC774 and many other instruments on a PC. Network and the device setting, display of measured and stored values and analysis of stored data in the device are possible via the serial, Ethernet or USB communication. The information and stored measurements can be exported in standard Windows formats. Multilingual software functions on Windows XP, W7 operating systems. Figure 9 MiQen setting and acquisition software MiQen software is intended for: o Setting all of the instruments parameters (online and offline). o Viewing current measured readings and stored data. o Setting and resetting energy counters. o Complete I/O modules configuration. o Evaluation of the electricity supply quality in compliance with SIST EN 50160. o Viewing and exporting time-stamped PQ anomaly details. o Upgrading instruments firmware. o Searching the net for devices. o Virtual interactive instrument. o Comprehensive help support. Technical Documentation 14 MC774 Quality Analyser CONNECTION System/ connection Terminal assignment 1b (1W1b) Single-phase connection 3b (1W3b) Three-phase, three-wire connection with balanced load 3u (2W3u) Three-phase, three-wire connection with unbalanced load. Technical Documentation MC774 Quality Analyser 15 System/ connection Terminal assignment 4b (1W4b) Three-phase, four wire connection with balanced load 4u (3W4) Three-phase, four wire connection with unbalanced load. With this connection, a neutral current can be measured with 4th current sensor. NOTE! With all connection schemes must be terminal 12 (PE) ALWAYS connected. Fourth voltage channel is dedicated for measuring voltage between EARTH (PE, terminal 12) and NEUTRAL (N, terminal 2). Technical Documentation 16 MC774 Quality Analyser DIMENSIONAL DRAWING Technical Documentation MC774 Quality Analyser 17 Connection table Function Connection Comment Measuring input: AC current IL1 1/3 CAT II 600V CAT III 300V IL2 4/6 IL3 7/9 ILN 26/27 AC voltage UL1 2 CAT II 600V CAT III 300V UL2 5 UL3 8 UN 11 Inputs / outputs: Module 1/2 + 15 (common) 16 + 17 Module 3/4 + 18 (common) 19 + 20 Module A 30-38 Module B 40-48 Module C 52-58 Auxiliary power supply: + / AC (L) 13 CAT III 300V GROUND terminal must be always connected ‼ – / AC (N) 14 GROUND 12 Communication: RS485 A 21 RS232 and RS485 are both supported, but only one at the time can be used! In case of Ethernet / USB communication, terminals from 21 to 25 are not used (unconnected). B 22 RS232 RX 23 GND 24 TX 25 Table 4: Connections Technical Documentation 18 MC774 Quality Analyser DATA FOR ORDERING When ordering MC774 Quality Analyser, all required specifications shall be stated in compliance with the ordering code. Additional information could be stated. Note that fixed or programmable specifications are not part of ordering code. General ordering code The following specifications shall be stated: Device Type Nominal freq. Aux. power supply Comm. COM1 I/O module 1/2 I/O module 3/4 I/O module A I/O module B MC774 X X X X X X X | | | | | | | | | | | | N Without * 8x Relay (alarm) output 8x Digital input 230 VAC/DC 8x Digital input 75-110 VAC/DC 8x Digital input 5-48 VAC/DC | | | | | M 8x Relay (alarm) output | | | | | D 8x Digital input 230 VAC/DC | | | | | E 8x Digital input 110 VAC/DC | | | | | F 8x Digital input 5-48 VAC/DC | | | N Without * | | | A 2× Analogue output | | | S 2× Pulse output | | | M 2× Relay (alarm) output | | | B 1× Bistable relay (alarm) output | | | W 1× Status + 1× Relay output | | | I 2× Analogue input - mA DC | | | U 2× Analogue input - V DC | | | R 2× Analogue input - R/Temp. | | | P 2× Pulse input 5 - 48 V DC | | | D 2× Digital input 230 V AC/DC | | | E 2× Digital input 110 V AC/DC | | | F 2× Digital input 5 - 48 V AC/DC | | | T 2× Tariff input 230 V AC/DC I/O module 1/2 only | | | Z 2× Tariff input 110 V AC/DC I/O module 1/2 only | | | Y 2× Tariff input 5 - 48 V AC/DC I/O module 1/2 only | | T RS232 & RS485 Terminal * | | E Ethernet & USB | | U USB | H 70...300 V DC, 80...276 V AC * | L 19...70 V DC, 48...77 V AC S 50, 60 Hz * A 400 Hz *-standard Technical Documentation MC774 Quality Analyser 19 Dictionary: PQ Power Quality alias Voltage Quality RMS Root Mean Square PA Power angle (between current and voltage) PF Power factor VT Voltage measuring transformer CT Current measuring transformer THD Total harmonic distortion Ethernet IEEE 802.3 data layer protocol MODBUS / DNP3 Industrial protocol for data transmission MiQen ISKRA setting and acquisition Software AC Alternating quantity RTC Real Time Clock IRIG Inter-range instrumentation group time codes NTP Network Time Protocol Published by Iskra, d.o.o. • Subject to change without notice • Version 2.02 March 2019 • EN P22.444.053
E-mail: piyatida@engineer.com
Tel: 081-762-3248
Address: 47 ถ.ชัยพฤกษ์ แขวงตลิ่งชัน เขตตลิ่งชัน กรุงเทพมหานคร 10170
Address: 47 ถ.ชัยพฤกษ์ แขวงตลิ่งชัน เขตตลิ่งชัน กรุงเทพมหานคร 10170
ISKRA PQM MC774 Datasheet download
Power Quality Analyzer
Size: 144 x 144 mm
Ordering code: MC774 S H E S N N N
I/O module: 2 Pulse output
Communication: Ethernet RJ-45 & USB
Auxiliary Power Supply: 70-300VDC & 80-276VAC
Accuracy: Class 0.2S for active energy
Software: MiQen, ISKRA setting and acquisition Software
Feature;
Class A measuring accuracy according to EN61000-4-30.
Evaluation of power quality in compliance with EN 50160.
Voltage and current auto range measurements up to 1000 VRMS, 12.5 A.
4 voltage and 4 current channels with 32μs sampling time.
Wide frequency measurement range 16 Hz – 400 Hz.
Up to three independent communication ports.
Support for GPS, IRIG-B and NTP real time synchronisation.
Up to 20 inputs/outputs.
Email: anda@engineer.comTel: 081-762-3248
Technical Documentation 1 MC774 Quality Analyser POWER QUALITY ANALYZER MC774 Class A measuring accuracy according to EN61000-4-30. Evaluation of power quality in compliance with EN 50160. Voltage and current auto range measurements up to 1000 VRMS, 12.5 A. 4 voltage and 4 current channels with 32μs sampling time. Wide frequency measurement range 16 Hz – 400 Hz. Up to three independent communication ports. Support for GPS, IRIG-B and NTP real time synchronisation. Up to 20 inputs/outputs. Technical Documentation 2 MC774 Quality Analyser FEATURES o Evaluation of the electricity supply quality in compliance with EN 50160 with automatic report generation. o Measurements of instantaneous values of more than 140 quantities including harmonics, flicker, power line signalling voltage, unbalance … o Class A (0.1%) accuracy in compliance with EN61000-4- 30. o Four quadrant energy measurement with class 0.2S for active energy, 8 programmable counters, up to four tariffs, tariff clock … o Automatic range selection of 4 current and 4 voltage channels (max. 12.5 A and 1000 VRMS) with 32 kHz sampling rate. o Recording all measured parameters including all voltage and current harmonics up to 65th, 32 adjustable alarms, anomalies and quality reports in the internal memory. o Measurements of 40 minimal and maximal values in different time intervals (from 1 to 256 periods). o Frequency range from 16 Hz to 400 Hz. o Up to three independent communication ports (RS 232/485 up to 115,200 bit/s, Ethernet and USB 2.0). o MODBUS and DNP3 communication protocols. o Support for GPS, IRIG-B (modulated and digital) and NTP real time synchronisation. o Up to 20 inputs and outputs (analogue inputs/outputs, digital inputs/outputs, alarm/watchdog outputs, pulse input/outputs, tariff inputs). o Multilingual support. o Universal power supply (two voltage ranges). o 144 mm square panel mounting. o User-friendly setting and evaluation software, MiQen. DESCRIPTION MC774 is an important device for permanent monitoring of power quality from its production (especially renewable), transmission, distribution to final consumers, who are most affected by insufficient quality of voltage. Lack of information about supplied quality of voltage can lead to unexplained production problems and malfunction or even damage to equipment used in production process. Therefore, MC774 can be used for utility purposes (evaluation against standards) as well as for industry purposes (monitoring supplied power quality). MC774 performs measurements in compliance with regulatory requested standard EN 61000-4-30 and evaluates recorded parameters for analysis according to parameters defined in European supply quality standard EN 50160:2011. Moreover MC774 stores measurements and quality reports in internal memory for further analysis over recorded measurements. By accessing recorded or real time values from multiple instruments installed on different locations it is possible to gain the overall picture of systems’ behaviour. This can be achieved with regard to MC774 accurate internal real time clock and wide range of synchronization sources support, which assure accurate, time-stamped measurements from dislocated units. All required measurements, weekly PQ reports and alarms can also be stored locally in an internal memory. Stored data can be then transferred to a memory card or accessed through communication for post analysis. APPLICATION AND BENEFITS MC774 Quality Analyser can be used as a standalone PQ monitoring device for detection of local PQ deviations. For this purpose it is normally positioned at the point-ofcommon-coupling (PCC) of small and medium industrial and commercial energy consumers to monitor quality of delivered electric energy or at medium or low voltage feeders to monitor, detect and record possible disturbances caused by (unauthorized) operation of consumers. Identifying relevant fixed measuring points is the most important task prior to complete system installation. This system itself will not prevent disturbances in network but it will help diagnose their origin and effects. And this is possible only with system approach by using time synchronized meters and predefined measuring parameters relevant for each individual measuring point. Therefore the most extensive benefits are achieved when MC774 is used as a part of an energy monitoring system comprising of strategically positioned meters connected to MiSMART software solution. This three-tier middleware software represents a perfect tool for utility companies, energy suppliers and other parties on both ends of supplydemand chain. MiSMART data collector with “push” communication system allows automatic records of all predefined measuring parameters. They are stored in MiSMART database, while leaving a copy of same parameters stored locally in memory of each device as a backup copy. Database records in XML format can be searched and viewed in tabelaric and graphical form using MiSMART client or other third-party application software. Database records can involve numerous parameters of three-phase system, power quality parameters, physical parameters (temp., pressure, wind speed …) as well as alarms and detailed time-stamped event logs. Technical Documentation MC774 Quality Analyser 3 COMPLIANCE WITH STANDARDS Measurements and reports of power (voltage) quality (PQ) indexes are only useful when can be compared with measurements and reports from other PQ measuring devices in the supply network and evaluated against agreed limits for assessment of measured PQ indexes to establish an overall view about PQ issues in the network. For this purpose it is essential to follow guidelines described in series of international and local standards. Beside requirements for safe operation (LVD directive) and immunity against more and more demanding disturbances (EMC directive), PQ measuring depends on two levels of standardization: Procedures for proper acquirement of PQ indexes, their timed aggregation and required accuracy are described in a standard IEC EN 61000-4-30 and two supplementary standards IEC EN 61000-4-7 (harmonics), IEC EN 61000-4-15 (flickermeter) Procedures for evaluation of measured PQ indexes according to limit levels described in European standard EN 50160 MC774 Quality Analyser follows required procedures and meets the precision requirements for class A measuring device as described in standard IEC EN 61000-4-30. It uses acquired measurements to perform automatic evaluation of PQ according to EN 50160 and issues weekly reports. In case if certain PQ indexes fail to meet required quality it also shows details of problematic measurements and time of occurrence of discrepancy. Standard EN Description 61010-1: 2010 Safety requirements for electrical equipment for measurement, control and laboratory use 61557-12:2008 Electrical safety in LV distribution systems up to 1kV a.c. and 1.5kV d.c. – Combined performance measuring and monitoring devices for electrical parametrs 61000-4-30:2009 Electromagnetic compatibility (EMC) – Power quality measurements methods 61000-4-7:2003 + A1:2009 Electromagnetic compatibility (EMC) – General guide on harmonics and interharmonics measurements 61000-4-15:2010 Electromagnetic compatibility (EMC) – Flickermeter 50160:2011 Voltage characteristics of electricity supplied by public distribution networks 62053-22:2003 Electricity metering equipment - Static meters for active energy (classes 0,2 S and 0,5 S) 62053-23:2003 Electricity metering equipment - Static meters for reactive energy (classes 2 and 3) 61326-1:2006 EMC requirements for electrical equipment for measurement, control and laboratory use 60529:1997/A1:200 0 Degrees of protection provided by enclosures (IP code) 60068-2-1/ -2/ - 6/ -27/-30 Environmental testing (-1 Cold, -2 Dry heat, -30 Damp heat, -6 Vibration, -27 Shock) UL 94 Tests for flammability of plastic materials for parts in devices and appliances Table 1: List of applicable standards Technical Documentation 4 MC774 Quality Analyser VOLTAGE QUALITY Voltage Quality is well defined term (sometimes also termed Power Quality – PQ) and is covered with a selection of parameters, each of which represents certain phenomenon. They represent only most common types of phenomena which can describe operation of electrical network with closest approximation. MC774 Quality Analyser measures, detects, stores and evaluates parameters, which are defined in several standards. Evaluation is by default performed according to limits set in European standard EN50150. Beside that users can always alter parameters according to their requirements or according to immunity of their equipment which operates within analyzed power network. PQ recording settings Figure 1 Settings for power quality parameters are set with setting and monitoring software MiQen Characteristic parameters that describe power quality are shown in table 1: Phenomena PQ Parameters Frequency variations Frequency distortion Voltage variations Voltage fluctuation Voltage unbalance Voltage changes Rapid voltage changes Flicker Voltage events Voltage dips Voltage interruptions Voltage swells Harmonics & THD Harmonics Interharmonics Signalling voltage Table 2 Voltage quality parameters as defined in EN50160 PQ reports PQ report is issued on a basis of chosen PQ parameters as well as information about a period of tracking and place of tracking (type of network). Each record is internally stored for later analysis. Settings software allows user to quickly view PQ report with limit lines and compliance results. Figure 2 Viewing power quality report parameters and log details with setting software MiQen To analyze in details which and when certain parameters are outside limit lines it is possible to view time stamped details and with that establish true origin of anomaly and its consequences. Technical Documentation MC774 Quality Analyser 5 MEASUREMENTS Online measurements Online measurements are available on display or can be monitored with setting and monitoring software MiQen. Readings on display are performed continuously with refresh time dependent on set average interval whereas rate of readings monitored with MiQen is fixed and refreshed approx. each second. For better overview over numerous readings, they are divided into several groups, which contain basic measurements, min. and max. values, harmonics, PQ parameters and alarms. Each group can represent data in visually favored graphical form or detailed tabelaric form. Latter allows freezing readings and/or copying data into various report generation software tools. Interactive instrument Additional communication feature of a device allows interactive handling with a dislocated device as if it would be operational in front of user. This feature is useful for presentations or product training. Selection of available quantities Available online measuring quantities and their appearance can vary according to set type of power network and other settings such as; average interval, max. demand mode, reactive power calculation method … Complete selection of available online measuring quantities is shown in a table on the next page. Figure 3 Online measurements in graphical form – phase diagram and daily total active power consumption histogram Figure 4 Online measurements in tabelaric form Figure 5 Online harmonic measurements in graphical form Technical Documentation 6 MC774 Quality Analyser Meas. type Measurement 3-phase 4- wire 3-phase 3- wire 1-phase Comments Phase Voltage measurements U1-3_RMS 1ph UAVG_RMS Uunbalance_neg_RMS Uunbalance_zero_RMS U1-3_DC 1ph DC component of phase voltages Current I1-3_RMS 1ph ITOT_RMS IAVG_RMS Power P1-3_RMS 1ph PTOT_RMS Q1-3_RMS 1ph reactive power can be calculated as a squared QTOT_RMS difference between S and P or as sample delayed S1-3_RMS 1ph STOT_RMS PF1-3_RMS 1ph PFTOT 1-3_RMS 1ph Harmonic analysis THD-U1-3 1ph THD-I1-3 1ph TDD-I1-3 1ph U1-3_harmonic_1-63_% 1ph % of RMS or % of base U1-3_harmonic_1-63_ABS 1ph U1-3_harmonic_1-63_ 1ph U1-3_inter-harmonic_% 1ph monitoring up to 10 different fixed frequencies. % of U1-3_inter-harmonic_ABS 1ph RMS or % of base U1-3_signaling_% 1ph monitoring of signalling (ripple) voltage of set U1-3_signaling_ABS 1ph frequency. % of RMS or % of base I1-3_harmonic_1-63_% 1ph % of RMS or % of base I1-3_harmonic_1-63_ABS 1ph I1-3_harmonic_1-63_ 1ph Flickers Pi1-3 1ph Instantaneous flicker sensation measured with 150 samples / sec (original sampling is 1200 smpl/sec) Pst1-3 1ph 10 min statistical evaluation (128 classes of CPF) Plt1-3 1ph derived from 12 Pst acc. to EN 61000-4-15 Miscellaneous K-factor1-3 1ph Current Crest factor I1-3 1ph Phase to phase Voltage measurements Upp1-3_RMS UppAVG_RMS THD-Upp1-3 Upp1-3_harmonic_1-63_% % of RMS or % of base Upp1-3_harmonic_1-63_ABS Upp1-3_harmonic_1-63_ Uunderdeviation 1ph Uunder. and Uover. are calculated for phase or phase-toU phase voltages regarding connection mode. overdeviation 1ph For more information see MC774 Quality Analyser User's manual Technical Documentation MC774 Quality Analyser 7 Meas. type Measurement 3-phase 4-wire 3-phase 3-wire 1-phase comments Flickers Pi_pp1-3 Pst_pp1-3 Phase-to-phase flickers Plt_pp1-3 Metering Energy Counter E1-8 each counter can be dedicated to any of four quadrants (P-Q, import-export, L-C). Total energy is a sum of one counter for all tariffs. Tariffs can be fixed, date/time dependent or tariff input dependent E_TOT_1-8 Active tariff Auxiliary Aux. line channel UNEUTRAL-EARTH aux. voltage is dedicated for neutral-earth meas. only measurements INEUTRAL_meas measured neutral current with 4th current input INEUTRAL_calc calculated neutral current INEUTRAL_err error neutral current (difference between measured and calculated) Maximum Maximum demand demand MD_I1-3 1ph measurements MD_Pimport MD_Pexport MD_Qind MD_Qcap MD_S Min and max Min and max measurements U1-3_RMS_MIN 1ph U1-3_RMS_MAX 1ph Upp1-3_RMS_MIN Upp1-3_RMS_MAX I1-3_RMS_MIN 1ph I1-3_RMS_MAX 1ph P1-3_RMS_MIN 1ph P1-3_RMS_MAX 1ph PTOT_RMS_MIN 1ph PTOT_RMS_MAX 1ph S1-3_RMS_MIN 1ph S1-3_RMS_MAX 1ph STOT_RMS_MIN 1ph STOT_RMS_MAX 1ph freqMIN freqMAX Other Miscellaneous measurements freqMEAN Internal temp. Date, Time Last Sync. time UTC GPS Time If GPS receiver is connected to dedicated RTC time synchronization input GPS Longitude GPS Latitude GPS Altitude For more information see MC774 Quality Analyser User's manual Table 3 Selection of available measurement quantities Technical Documentation 8 MC774 Quality Analyser RECORDER A built-in recorder (8Mb) enables storing measurements, detected alarms and PQ reports with details. It supports recording of all measured quantities including voltage and current harmonics up tp 65th in 4 configurable partitions. For each partition is possible to set storage interval and other recording parameters. Fifth partition is used for recording alarms. Each alarm triggered by preset limit lines is stored in a form of alarm i.d. and its timestamp. Sixth partition is used for PQ reports. Each report in recorder is identified by a monitoring interval (date). Last partition is used for PQ report details. They represent time stamped PQ values that are outside PQ limit lines. Content of recorder can be viewed with monitoring software MiQen in a detailed tabelaric or visually favoured graphical form. Memory card MC774 Power Quality Analyzer & Recorder is equipped with a front panel slot for full sized SD memory card that supports capacity up to 2 GB. It is intended for downloading internally stored data, uploading setting file and performing firmware upgrade. ALARMS Alarms are powerful tool for MC774 Quality Analyser control and supervision features. Devices’ performance can with this features reach beyond measuring and analyzing power network. MC774 Quality Analyser supports recording and storing of 32 alarms in four groups. A time constant of maximal values in a thermal mode, a delay time and switch-off hysteresis are defined for each group of alarms. For each parameter is possible to set limit value, condition and alarm activation action (sound signal and/or digital output switch if available). All alarms are also stored in internal memory for postanalysis. Figure 6: Setting recorder parameters and viewing memory consumption information Figure 7 Viewing recorder content in tabelaric and graphical form Figure 8 Setting and viewing alarms Technical Documentation MC774 Quality Analyser 9 REAL TIME SYNCHRONISATION Synchronized real-time clock (RTC) is an essential part of any Class A analyzer for proper chronological determination of various events. Without RTC synchronization MC774 acts as a Class S device. To distinct cause from consequence, to follow a certain event from its origin to manifestation in other parameters it is very important that each and every event and recorded measurement on one instrument can be compared with events and measurements on other devices. Even if instruments are dislocated, which is normally the case in electro distribution network events have to be timecomparable with accuracy better than a single period. For this purpose instruments normally support highly accurate internal RTC. Still this is not enough, since temperature is location dependant and it influences its precision. For that reason it is required to implement periodical RTC synchronization. MC774 Quality Analyzer supports three types of RTC synchronization. GPS time synchronization: 1pps and serial RS232 communication with NMEA 0183 sentence support. GPS interface is designed as 5 pole plugable terminal (+5V for receiver supply, 1pps input and standard RS232 communication interface). Proposed GPS receiver is GARMIN GPS18x. IRIG time code B (IRIG-B): Unmodulated (DC 5V level shift) and modulated (1 kHz) serial coded format with support for 1pps, day of year, current year and straight seconds of day as described in standard IRIG-200-04. Supported serial time code formats are IRIG-B007 and IRIG-B127. Interface for modulated IRIG-B is designed as BNC-F unmodulated IRIG-B is designed as pluggable terminal. Network time protocol (NTP): Synchronization via Ethernet requires access to a NTP server. NOTE! NTP can usually maintain time to within tens of milliseconds over the public Internet, but the accuracy depends on infrastructure properties - asymmetry in outgoing and incoming communication delay affects systematic bias. It is recommended that dedicated network rather than public network is used for synchronisation purposes. COMMUNICATION MC774 Quality Analyzer has a wide variety of communication possibilities to suit specific demands. It is equipped with standard communication port COM1 and auxiliary communication port COM2. This allows two different users to access data from a device simultaneously and by using TCP/IP communication, data can be accessed worldwide. COM2 port is always present as a part of synchronization module C. It is available as a general purpose communication port when it is not used for time synchronization purposes. Different configurations are possible (to be specified with an order). Configuration COM1 COM2(2) 1 RS232/485 / 2 RS232/485 RS232/485 3 USB / 4 USB RS232/485 5 (1) Ethernet & USB / 6 (1) Ethernet & USB RS232/485 (1) Galvanic separation between Eth. and USB is 1 kVACRMS (2) COM2 is NOT available if GPS time synchronization is used Table 3: List of communication configurations MC774 Quality Analyser supports standard communication protocols MODBUS RTU, TCP and DNP3 L1. Additionally it supports proprietary PUSH communication mode, which is used in system applications where devices send predefined readings in predefined time intervals in XML format. Web based software MiSMART collects data and stores it into database. Stored data can then be viewed with MiSMART client software. For more information about PUSH communication mode and XML format see MC774 Quality Analyser User's manual GP K 22.444.053. Figure 9 MiSMART client window Technical Documentation 10 MC774 Quality Analyser TECHNICAL DATA Measurement inputs Nominal frequency range 50, 60 Hz Measuring frequency range 16−400 Hz Voltage measurements: Number of channels 4 (1) Sampling rate 31 kHz Min. voltage for sync. 1 Vrms Nominal value (UN) 500 VLN , 866 VLL Max. measured value (cont.) 600 VLN ; 1000 VLL Max. allowed value 1.2 × UN permanently 2 × UN ; 10 s Consumption < U2 / 4.2MΩ per phase Input impedance 4.2MΩ per phase (1) 4 th channel is used for measuring U EARTH-NEUTRAL Current measurements: Number of channels 4 Sampling rate 31 kHz Nominal value (INOM) 1 A, 5 A Max. measured value (I1-I3 only) 12.5 A sin. Max. allowed value (thermal) 15 A cont. ≤ 300 A; 1s Consumption < I2 × 0.01Ω per phase System: Voltage inputs can be connected either directly to lowvoltage network or via a VT to higher voltage network. Current inputs can be connected either directly to lowvoltage network or shall be connected to network via a corresponding CT (with standard 1 A or 5 A outputs). For more information about different system connections see CONNECTION on page Napaka! Zaznamek ni definiran.. Basic accuracy under reference conditions Accuracy is presented as percentage of reading of the measurand except when it is stated as an absolute value. Measurand Accuracy Voltage L-N, L-L ± 0.1% acc. to EN 61557-12 Current ± 0.1% acc. to EN 61557-12 Active power (IN = 5A) ± 0.2% acc. to EN 61557-12 Active power (IN = 1A) ± 0.5% acc. to EN 61557-12 Active energy Cl. 0.2S acc. to EN 62053-22 Reactive energy Cl.2 acc. to EN 62053-23 Frequency (f) ± 0.01Hz acc. to EN 61557-12 Power factor (PF) ± 0.5% acc. to EN 61557-12 THD (U) ± 0.3% acc. to EN 61557-12 THD (I) ± 0.3% acc. to EN 61557-12 Real time clock (RTC) < ± 1s / day acc. to IEC61000-4- 30 All values required for PQ analysis, which should be measured according to IEC61000-4-30 correspond to Class A accuracy. For complete overview of accuracy for all measured parameters and measuring ranges see Users’ manual (doc. no. GB K 22.444.053) on page 143. INPUT / OUTPUT modules MC774 Quality Analyser is equipped with two main I/O slots, two auxiliary I/O slots and special time-synchronisation module. The following I/O modules are available: Module type Number of modules per slot Main slot Aux slot Analogue output (AO) 2 / Analogue input (AI) 2 / Digital output (DO) 2 8 Digital input (DI) 2 8 Bistable Digital output (BO) 1 / Status output (WO) 1 + 1xDO / Table 4: List of available I/O modules Analogue input (AI): Three types of analogue inputs are suitable for acquisition of low voltage DC signals from different sensors. According to application requirements it is possible to choose current, voltage or resistance (temperature) analogue input. They all use the same output terminals. MiQen software allows setting an appropriate calculation factor, exponent and required unit for representation of primary measured value (temperature, pressure, wind speed …). Technical Documentation MC774 Quality Analyser 11 DC current input: Nominal input range –20…0…20 mA (±20%) input resistance 20 Ω accuracy 0.5 % of range temperature drift 0.01% / °C conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended DC voltage input: Nominal input range –10…0…10 V (±20%) input resistance 100 kΩ accuracy 0.5 % of range temperature drift 0.01% / °C conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended Resistance (temperature) input: Nominal input range (low)* 0 - 200 Ω (max. 400 Ω) PT100 (-200°C–850°C) Nominal input range (high)* 0 – 2 kΩ (max. 4 kΩ) PT1000 (-200°C–850°C) connection 2-wire accuracy 0.5 % of range conversion resolution 16 bit (sigma-delta) Analogue input mode internally referenced Singleended * Low or high input range and primary input value (resistance or temperature) are set by the MiQen setting software Analogue output (AO): Output range 0…20 mA Accuracy 0.5% of range Max. burden 150 Ω Linearization Linear, Quadratic No. of break points 5 Output value limits 120% of nominal output Response time (measurement and analogue output) depends on set general average interval (0.1s – 5s) Residual ripple < 1 % p.p. Outputs may be either short or open-circuited. They are electrically insulated from each other and from all other circuits. Output range values can be altered subsequently (zoom scale) using the setting software, but a supplementary error results. Digital input (DI) Purpose Tariff input, Pulse input, General purpose digital input Max. current 8 mA (48V), <0.6mA (110, 230V) SET voltage 40...120 % of rated voltage RESET voltage 0...10 % of rated voltage Tariff input Main slot only Rated voltage (5…48), 110, 230 ± 20% VAC/DC Frequency range 45…65 Hz Pulse input Main slot only Rated voltage 5 - 48VDC Min. pulse width 0.5 ms Min. pulse period 2 ms Digital input (5…48), 110, 230 ± 20% VAC/DC Min. signal width 20 ms Min. pause width 40 ms Digital output (DO, BO) Type Relay switch Purpose Alarm output, General purpose digital output Rated voltage 230 VAC/DC ± 20% max Max. switching current 1000 mA (main slot) 100 mA (aux. slot, DO only) Contact resistance ≤ 100 mΩ (100 mA, 24V) Impulse Max. 4000 imp/hour Min. length 100 ms Type Optocoupler open collector switch (main slot only) Purpose Pulse output Rated voltage 40 VAC/DC Max. switching current 30 mA (RONmax = 8Ω) Pulse length programmable (2 … 999 ms) Technical Documentation 12 MC774 Quality Analyser Status (watchdog) output (WO) Time synchronisation input Digital input GPS or IRIG-B TTL 1pps voltage level TTL level (+5V) Time code telegram RS232 (GPS) DC level shif (IRIG-B) AM analogue input IRIG-B AM modulated Carrier frequency 1 kHz Input impedance 600 Ohms Amplitude 2.5VP-Pmin, 8VP-Pmax Modulation ration 3:1 – 6:1 Universal Power Supply Standard (high): CAT III 300V Nominal voltage AC 80 … 276 V Nominal frequency 40 … 65 Hz Nominal voltage DC 70 … 300 V Consumption (max. all I/O) < 8VA Power-on transient current < 20 A ; 1 ms Optional (low): CAT III 300V Nominal voltage AC 48 … 77 V Nominal frequency 40 … 65 Hz Nominal voltage DC 19 … 70 V Consumption (max. all I/O) < 8VA Power-on transient current < 20 A ; 1 ms Safety: Protection: protection class II functional earth terminal must be connected to earth potential! Voltage inputs via high impedance Double insulation for I/O ports and COM ports Pollution degree 2 Installation category CAT II ; 600 V (measuring inputs) CAT III ; 300 V Acc. to EN 61010-1 Test voltages UAUXI/O, COM1: 3510 VACrms UAUXU, I inputs: 3510 VACrms U, I inputsI/O, COM1: 3510 VACrms HV I/O I/O, COM1: 3510 VACrms U inputsI inputs: 3510 VACrms Mechanical Dimensions 144 × 144 ×100 mm Mounting Panel mounting 144×144 mm Required mounting hole 137 × 137 mm Enclosure material PC/ABS Flammability Acc. to UL 94 V-0 Weight 550 g Enclosure material PC/ABS Acc. to UL 94 V-0 Ambient conditions: Ambient temperature K55 temperature class Acc. to EN61557-12 -10…55 °C Storage temperature -40 to +70 °C Average annual humidity 90% r.h. (no condensation) Pollution degree 2 Enclosure protection IP 40 (front plate) IP 20 (rear side) Installation altitude 2000 m Real time clock A built-in real time clock is also without external synchronization very stable when device is connected to auxiliary power supply. For handling shorter power interruptions without influence on RTC, device uses high capacity capacitor. It ensures auxiliary supply (for internal RTC only) for more than two days of operation. Type Low power embedded RTC RTC stability < 1 sec / day Connection cables MC774 Quality Analyser is equipped with European style pluggable terminals for measuring voltages, auxiliary supply, communication and I/O modules. Measuring current cables shall be attached as through-hole connection without screwing. NOTE! Stranded wire must be used with insulated end sleeve to assure firm connection. Voltage inputs (4) 2.5 mm2 , AWG 24-12 single wire Current inputs (3) Ø 6 mm one conductor with insulation Supply (3) 2.5 mm2 , AWG 24-12 single wire Com (5), I/O (6) 2.5 mm2 , AWG 24-12 single wire Technical Documentation MC774 Quality Analyser 13 MiQen - setting and acquisition Software MiQen software is intended for supervision of MC774 and many other instruments on a PC. Network and the device setting, display of measured and stored values and analysis of stored data in the device are possible via the serial, Ethernet or USB communication. The information and stored measurements can be exported in standard Windows formats. Multilingual software functions on Windows XP, W7 operating systems. Figure 9 MiQen setting and acquisition software MiQen software is intended for: o Setting all of the instruments parameters (online and offline). o Viewing current measured readings and stored data. o Setting and resetting energy counters. o Complete I/O modules configuration. o Evaluation of the electricity supply quality in compliance with SIST EN 50160. o Viewing and exporting time-stamped PQ anomaly details. o Upgrading instruments firmware. o Searching the net for devices. o Virtual interactive instrument. o Comprehensive help support. Technical Documentation 14 MC774 Quality Analyser CONNECTION System/ connection Terminal assignment 1b (1W1b) Single-phase connection 3b (1W3b) Three-phase, three-wire connection with balanced load 3u (2W3u) Three-phase, three-wire connection with unbalanced load. Technical Documentation MC774 Quality Analyser 15 System/ connection Terminal assignment 4b (1W4b) Three-phase, four wire connection with balanced load 4u (3W4) Three-phase, four wire connection with unbalanced load. With this connection, a neutral current can be measured with 4th current sensor. NOTE! With all connection schemes must be terminal 12 (PE) ALWAYS connected. Fourth voltage channel is dedicated for measuring voltage between EARTH (PE, terminal 12) and NEUTRAL (N, terminal 2). Technical Documentation 16 MC774 Quality Analyser DIMENSIONAL DRAWING Technical Documentation MC774 Quality Analyser 17 Connection table Function Connection Comment Measuring input: AC current IL1 1/3 CAT II 600V CAT III 300V IL2 4/6 IL3 7/9 ILN 26/27 AC voltage UL1 2 CAT II 600V CAT III 300V UL2 5 UL3 8 UN 11 Inputs / outputs: Module 1/2 + 15 (common) 16 + 17 Module 3/4 + 18 (common) 19 + 20 Module A 30-38 Module B 40-48 Module C 52-58 Auxiliary power supply: + / AC (L) 13 CAT III 300V GROUND terminal must be always connected ‼ – / AC (N) 14 GROUND 12 Communication: RS485 A 21 RS232 and RS485 are both supported, but only one at the time can be used! In case of Ethernet / USB communication, terminals from 21 to 25 are not used (unconnected). B 22 RS232 RX 23 GND 24 TX 25 Table 4: Connections Technical Documentation 18 MC774 Quality Analyser DATA FOR ORDERING When ordering MC774 Quality Analyser, all required specifications shall be stated in compliance with the ordering code. Additional information could be stated. Note that fixed or programmable specifications are not part of ordering code. General ordering code The following specifications shall be stated: Device Type Nominal freq. Aux. power supply Comm. COM1 I/O module 1/2 I/O module 3/4 I/O module A I/O module B MC774 X X X X X X X | | | | | | | | | | | | N Without * 8x Relay (alarm) output 8x Digital input 230 VAC/DC 8x Digital input 75-110 VAC/DC 8x Digital input 5-48 VAC/DC | | | | | M 8x Relay (alarm) output | | | | | D 8x Digital input 230 VAC/DC | | | | | E 8x Digital input 110 VAC/DC | | | | | F 8x Digital input 5-48 VAC/DC | | | N Without * | | | A 2× Analogue output | | | S 2× Pulse output | | | M 2× Relay (alarm) output | | | B 1× Bistable relay (alarm) output | | | W 1× Status + 1× Relay output | | | I 2× Analogue input - mA DC | | | U 2× Analogue input - V DC | | | R 2× Analogue input - R/Temp. | | | P 2× Pulse input 5 - 48 V DC | | | D 2× Digital input 230 V AC/DC | | | E 2× Digital input 110 V AC/DC | | | F 2× Digital input 5 - 48 V AC/DC | | | T 2× Tariff input 230 V AC/DC I/O module 1/2 only | | | Z 2× Tariff input 110 V AC/DC I/O module 1/2 only | | | Y 2× Tariff input 5 - 48 V AC/DC I/O module 1/2 only | | T RS232 & RS485 Terminal * | | E Ethernet & USB | | U USB | H 70...300 V DC, 80...276 V AC * | L 19...70 V DC, 48...77 V AC S 50, 60 Hz * A 400 Hz *-standard Technical Documentation MC774 Quality Analyser 19 Dictionary: PQ Power Quality alias Voltage Quality RMS Root Mean Square PA Power angle (between current and voltage) PF Power factor VT Voltage measuring transformer CT Current measuring transformer THD Total harmonic distortion Ethernet IEEE 802.3 data layer protocol MODBUS / DNP3 Industrial protocol for data transmission MiQen ISKRA setting and acquisition Software AC Alternating quantity RTC Real Time Clock IRIG Inter-range instrumentation group time codes NTP Network Time Protocol Published by Iskra, d.o.o. • Subject to change without notice • Version 2.02 March 2019 • EN P22.444.053
BENEFITS
POWER QUALITY PARAMETERS AT YOUR PALM
USE OF INPUT/OUTPUT MODULES & APPLICATION INPUT/OUTPUT MODULES USE ENERGY SECTOR
ENERGY
ALARMS CONTROL
AUXILIARY INPUTS
TRANSFORMERS SUBSTATION
CONTROL ACCESS
ELECTRIC MOTOR
BREAKDOWN
POWER QUALITY
ANALIZER BREAKDOWN
ALARM
ALARM
ALARM
ALARM
OVERHEAD TRANSMISSION
LINES BREAKDOWN
POWER QUALITY ANALYZER FUNCTIONS ALSO AS A SECONDARY PROTECTION DEVICE
UP TO 32 ALARMS
HIGH ACCURATE DATA ABOUT CONSUMPTION
MEASUREMENT OF WATER; HEAT; GAS ETC. CONSUMPTION
FAST NOTIFICATION OF FAULTS IN A SYSTEM INPUT SIGNALS OF PLC OVERVOLTAGE PROTECTION
CAN BE VIEWED ON DEVICE OR DOWNLOADED
FOR ENERGY COUNTERS FOR FOUR-QUADRANT METERING
MEASUREMENT OF SOLAR RADIATION, TRANSFORMER
STATION TEMPERATURE; WIND SPEED, ETC.
SUBSTATION CONTROL ACCESS
• Published by Iskra, d. d. • Version 6.0 September 2017
Iskra, d.d.
Stegne 21
SI-1000 Ljubljana, Slovenia
Phone: +386 1 513 10 00
www.iskra.eu
ENERGY PRODUCTION AND CONSUMTION ANALYSIS
CONSUMPTION
ELECTRIC ENERGY
PRODUCTION
INDUSTRY
SHOPPING MALLS
AND DWELLINGS
ENERGY PRODUCTION AND CONSUMTION ANALYSIS
LIGHTNING PROTECTION
OVERVOLTAGE
SWITCHING OFF
SWITCHING OFF
ELECTRIC MOTOR BREAKDOWN
WEATHER DATA
(WIND, SOLAR RADIATION)
WATER CONSUMPTION DATA
GAS CONSUMPTION DATA
HEATING DATA
CONSUMPTION
CONSUMPTION
DISTRIBUTION
ELECTRIC ENERGY
PROTECTION
ELECTRIC ENERGY
PROTECTION
EN 50160
VOLTAGE QUALITY EVALUATION
USER FRIENDLY
MiQen
SETTING AND
ANALYSIS SOFTWARE
MONITORING DETECTION OF
POWER QUALITY DEVIATIONS
(MiSMART, MiQEN SOFTWARE SOLUTION)
WEB BASED 3-TIER
CENTRALISED DISTRIBUTED INSTRUMENT
DATA MONITORING SOFTWARE MiSMART
SUPPORT FOR GPS, IRIG-BAND NTP
REAL TIME SYNCHRONISATION
UP TO 20 I/0 MODULES
(ANALOGUE IN/OUT, PULSE IN/OUT,
ALARM/WATCHDOG, TARRIF IN)
WIDE RANGE INPUT AND
OUTPUT MODULES
(COMPETITIVE PRODUCTS IN MOST CASES „ONLY“
VOLTAGE QUALITY ANALYZERS)
MEASUREMENTS OF
INSTANTANEOUS VALUES OF MORE THAN
140 QUANTITIES INCLUDING HARMONICS, FLICKER,
POWER LINE SIGNALLING VOLTAGE, UNBALANCE ...
WIDE VARIETY OF REAL TIME
SYNCHRONIZATION OPTIONS
VOLTAGE AND CURRENT
AUTO RANGE MEASUREMENTS UP TO 1000 V RMS, 12.5 A
4 VOLTAGE AND 4 CURRENT
CHANNELS WITH 32 ms SAMPLING TIME
WIDE FREQUENCY MEASUREMENT
RANGE 16 - 400 Hz
UP TO THREE INDEPENDENT
COMMUNICATION PORTS
(SERIAL, ETHERNET AND USB COMMUNICATION)
MODBUS AND DNP3
MULTILINGUAL SUPPORT COMMUNICATION PROTOCOLS
(MENUS IN 15 LANGUAGES)
HIGH ACCURACY - CLASS A
MEASUREMENTS (CERTIFIED BY PSL -
POWER STANDARDS LAB)
CLASS A
RCM
CLASS A
REPORTING
HARMONICS
VOLTAGE
QUALITY
ALARM
MANAGEMENT
RESIDUAL
CURRENT
MONITORING
ISKRA MC 774 POWER QUALITY
CLASS A ACCURACY CERTIFIED
RELEVANT FOR POWER QUALITY MONITORING DEVICES FOR THE DETECTION
OF LOCAL POWER QUALITY DEVIATIONS.
MEMBER
▲
▼
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