Mega MEg40+ Manual
Summary of MEg40+
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Mega – měřící energetické aparáty, a.S. Mega – měřící energetické aparáty, a.S. 664 31 Česká 390 664 31 Česká 390 czech republic czech republic universal energy meter meg40 +.
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3 universal energy meter meg40 + universal energy meter meg40 + 1/ purpose and description the universal energy meter meg40+ works as an energy meter and a monitor at the same time. In the function of the energy meter, it has a set of six energy registers for each phase. In the function of the monit...
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Měřící energetické aparáty 4 2/ technical parameters reference conditions: u supply = 230 v / 50,0 hz ambient temperature = 20 °c, relative humidity = 40 % to 70 %. Measured voltages and currents have a frequency identical with u supply and make a three-phase system. Measured quantity rated value ra...
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5 universal energy meter meg40 + frequency range of phase lock loop: 47.4 hz to 52.9 hz input impedance in 230 v range: 1.8 mΩ in 57.7 v range: 0.9 mΩ maximum input phase voltage in 230 v range: 295 v ef in 57.7 v range: 150 v ef maximum voltage on current inputs at i nom in 5 a range: 0.16 v ef in ...
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Měřící energetické aparáty 6 construction dimensions body: 90 × 90 × 90 mm frame: 95 × 95 mm weight: 0.6 kg terminal block: max Ø of wires 3.0 mm panel attachment: 2 pcs of removable eccentrics operating data working temperature: -25 °c to +55 °c storage temperature: -25 °c to +85 °c relative humidi...
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7 universal energy meter meg40 + 3/ function description compared with the original universal monitor meg40, the universal energy meter meg40 + offers extended functions to measure electrical energy. When measuring energies, it stores measured values into non-destructive registers and allows also ad...
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Měřící energetické aparáty 8 the display of the instrument meg40 + shows total registers for the three-phase outlet. The set of six registers for the individual phases are read by the user program. The phase energy measurement is unimportant when it is measured in compensated mv networks (mvl). Also...
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9 universal energy meter meg40 + 5-minute intervals and for up to 30 events during every 6 hr 45 min, the minimum time of measurement is 573.6 days. Then both 10-minute voltage quality evaluations and 15-minute energy evaluations can be made from 5-minute intervals. The organisation of the internal ...
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Měřící energetické aparáty 10 the user software evaluates maximums for selected recording intervals on the individual phases and also for the whole outlet for the recording interval and 1/4hr maximums. Besides, daily diagrams of average currents are determined for any selected day. The basic version...
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11 universal energy meter meg40 + 1 minute. Then the rotation of the registry values is restored. The rotation can be restored using the button start. When the button menu is enabled, the item energy meter and the item monitor appear. By turning to the item energy meter (inverse display) and pressin...
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Měřící energetické aparáty 12 when the item outlet is selected, all three voltages, three currents and three phases or active powers are displayed simultaneously, or the total active power of the outlet. By selecting the item interval you can select the repeat interval to display new values in seven...
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13 universal energy meter meg40 + when you select the item instrument parameters, the instrument meg40 + displays the basic information about the instrument, i.E. Serial number, control program version - fw, date and time of the internal clock and capacity of the flash data memory of the instrument....
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Měřící energetické aparáty 14 the current connection function checks currents for correct flow through individual circuits of the instrument meg40 + and for correct direction, which must be in phase with the voltage corresponding to the voltage input. The allowable phase shift is ± 80°. If no curren...
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15 universal energy meter meg40 + current inputs of the instrument meg40 + shall be always connected indirectly to secondary circuits of the measuring current transformers through fixed or flexible wires with the cross-section of 3 mm 2 with double insulation. It is recommended to connect them throu...
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Měřící energetické aparáty 16 5.1 installation of the instrument with the serial communication rs485, rs232 the universal energy meter meg40 + can be installed also into networks with commu- nication interface rs485 or rs232. The required communication interfaces must be specified in the order. The ...
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17 universal energy meter meg40 + thus, the data reading time can be significantly reduced, however the new measured data will be saved into a new data file after the data transfer is completed. After communication is finished with interruption of measurement, the new measurement must be programmed....
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Měřící energetické aparáty 18 • certificate of guarantee and delivery note, • cd with the basic user program and manual.. Optional available accessories: • communication cable meg40 + -pc / 1.8 m or 5 m, • 16 mb memory card, • reader of 8 memory cards, • uninterruptible power supply meg102, • usbhos...
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19 universal energy meter meg40 + defects of the instrument meg40 + and its accessories incurred during the guarantee period shall be claimed by the user to the manufacturers of the instrument meg40 + . Claims without the enclosed certificate of guarantee shall not be admitted. The manufacturer shal...
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Měřící energetické aparáty 20 l1 l2 l3 n i2k i2l i3k i3l i1k i1l u1 u2 u3 nm siŤ meg40 mtp mtp mtp type mbs ask 51.4 230v,5a/1a connection terminal wks 1/2 type wtl 6/3 stb type wtl 6/3 stb opv 10/3 pv 10 6a gg siŤ + si si si si si si su su su su si si su su su su si si si si fig. 2: wiring of the i...
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21 universal energy meter meg40 + fig. 4: dimensions of the instrument unit meg40 + profile 96 x 96 mm / body 90.5 x 90.5 mm hole in front panel 92 x 92mm fig 5: rear panel of the instrument meg40 + left: version with usb 2.0 communication right: version with rs485/rs232 communication i 1 k i 1 l i ...
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Měřící energetické aparáty 22 menu electricity meter monitor interval display cycle type higher resolution 5s 10s 15s 20s 30s 40s 50s 60s consumption +delivery consumption no delivery yes measuring instrument checking the connection recorder maximum values of currents parameters of display parameter...
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23 universal energy meter meg40 + menu electricity meter monitor interval display cycle type higher resolution 5s 10s 15s 20s 30s 40s 50s 60s consumption +delivery consumption no delivery yes measuring instrument checking the connection recorder maximum values of currents parameters of display param...
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Měřící energetické aparáty 24 accessories of the universal instrument meg40 + 16 mb memory card and memory card reader.
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25 16mb memory card and memory card reader 1/ purpose and use easy, on time, personnel and technical means undemanding collection of data measured by the instrument meg40 + is allowed by a special 16 mb memory card with flash memory and a reader for eight memory cards. The use of the 16mb memory car...
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Měřící energetické aparáty 26 in the circular recording mode, measured data are permanently recorded only into the memory card and the oldest data pages are overwritten. The measurement is ended after the measurement is ended from pc. 2.3 data transmission from the instrument meg40 + with memory car...
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27 16mb memory card and memory card reader 2.5 replacement of 16 mb memory cards in the measuring instrument meg40 + after the 16 mb memory card is taken out from the measuring instrument meg40 + , the measured data recording is interrupted and this status is displayed alternately with the measured ...
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Měřící energetické aparáty 28 uninterruptible power supply meg102 1/ purpose the uninterruptible power supply meg102 serves for short-term power supply of the instrument meg40 + in case of supply voltage interruptions or drops. In accordance with Čsn en 61000-4-30 ed. 2, its use is necessary for reg...
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29 uninterruptible power supply meg102 are galvanically isolated by transformers, they are to be connected to the power supply unit using screw-on terminals. There is a button on the outside of the plastic cover to stop the battery operation. The principle of the uninterruptible power supply meg102 ...
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Měřící energetické aparáty 30 3/ technical parameters input voltage: u inp nom = 230 v / 50 hz maximum input voltage: 253 v change to battery operation: u inp = 180 v return to network operation: u inp = 195 v output voltage: 170 v ef , rectangular course, mark-to-space ratio 1:4 in both polarities,...
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31 uninterruptible power supply meg102 mechanically, the power supply unit meg102 is to be placed close to the measuring instrument mounted on the din rail tc 35 using a clip. The power supply unit can be also just put on the horizontal surface. The vents of the unit meg102 are not allowed to be cov...
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Měřící energetické aparáty 32 usbhost / rs485 converter 1/ purpose the usbhost / rs485 converter is designed to connect a usb slave unit to the rs485 serial line. The usbhost / rs485 converter allows you to connect the instrument meg40 + with the usb interface to the rs485 serial bus. It also suppli...
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33 usbhost / rs485 converter 3/ construction the usbhost/rs485 converter according to fig. 1 with the panel fig. 2 is installed in a plastic box designed for spaces with the maximum voltage of 50 v ac . There is a 1 m long usb cable with usb b (m) connector running out from the left side. There are ...
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Měřící energetické aparáty 34 fig. 1: usbhost/rs485 converter in version for meg40 + and meg202.2 fig. 2: detail of type plate of usbhost/rs485 converter and communication unit meg202.2 usb host / rs485 konvertor sn: a b +12v usb host / rs485 konvertor sn: a b +12v.
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35 usbhost / rs485 converter fig. 3: interconnection of usbhost/rs485 converter and instrument meg40 + and communication unit meg202.2 universal energy meter meg40 + usb usb host/rs485 +12v b a t chan1 chan2 usb host/rs485 +12v b a t usb slave 1 2 3 4 5 6 7 8 communication unit gprs meg202.2.
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Měřící energetické aparáty 36 appendix no. 1 methodology of measurement using the monitor meg40 + appendix made by prof. Ing. Vladislav matyáš, csc. We understand it not only as a universal definition of algorithms of the universal monitors of meg40+ series but also as a generally valid description ...
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Měřící energetické aparáty 37 a similar relation as for voltages applies to currents. From the instantaneous current values i(k) with the serial numbers k = 0, 1, 2, …, k – 1, the rms current value is calculated according to the formula (2) using this formula, you calculate the rms value i 1 of the ...
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Měřící energetické aparáty 38 as well, powers are evaluated in each of the measuring time intervals t m . The following formula is applied to compute the active power: (3) where k = 320. From the values u 1 (k) and i 1 (k), the active power p 1 in phase 1 is obtained, from the values u 2 (k) and i 2...
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Měřící energetické aparáty 39 (7a) the average effective value is sometimes used instead of the rms value. (7b) under normal circumstances, the values u zc and u zp are almost the same. In addition to the total (or average) rms value, for each value in the range of the recording interval between the...
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Měřící energetické aparáty 40 from the active power values p(l) found out in the individual measuring time intervals t m with the serial numbers l = 1, 2, … l, the average active power is obtained for each of the recording intervals t z (12) and the minimum and maximum active power (13) from the rea...
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Měřící energetické aparáty 41 display and evaluation using a personal computer the data obtained during operation of the monitor and stored in its memory for further use are transmitted into a personal computer. The simplest operations with the transmitted data include statements. For each of the de...
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Měřící energetické aparáty 42 similar formulas apply to the idle power. The active energy transmitted during the time t v is e pv = t v p v (20) and the reactive energy similarly. Data from the time interval t v , can be displayed depending on time and evaluated statistically. It is also possible to...
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Měřící energetické aparáty 43.
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Mega – měřící energetické aparáty, a.S. 664 31 Česká 390 czech republic www.E-mega.Cz edition: 03/2014 universal energy meter meg40 +.