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PQ monitor MEg39

User manual

Měřící Energetické Aparáty, a.s.

664 31 Česká 390
Czech Republic

Содержание Meg39

Страница 1: ...PQ monitor MEg39 User manual M c Energetick Apar ty a s 664 31 esk 390 Czech Republic...

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Страница 3: ...into data memory an oscillogra phic record can be triggered by voltage U4 The voltage measuring inputs are designed for indirect voltage measurements by means of instrument transformers for the MV and...

Страница 4: ...d voltages and currents power supply and communication lines are realized by means of screw termi nals for a wire diameter of up to 4 mm2 Measured voltages are led to the corresponding terminals U1 36...

Страница 5: ...ption 1 Voltage inputs Terminals for connecting signals of the secondary windings of instrument voltage transformers for the MV and HV levels or for direct connecting of phase voltages at the LV level...

Страница 6: ...ting light 1 1 oscillographic recording 6 Status of measured voltages U1 U2 U3 U4 Signalization of the status of voltage at the inputs U1 U2 U3 and U4 during measurement at the LV level Y connection o...

Страница 7: ...amage to the monitor Warning Attention Operating personnel performing installation of the device into cir cuits with live parts must be equipped with and use during installation perso nal protective m...

Страница 8: ...porary overvoltage Usually for LV installations in buildings behind electric energy meter fuses Safety class II double or reinforced insulation IP code Degree of protection by cover Product is designa...

Страница 9: ...d value of 100V voltage U4 is measured against the N input with the rated voltage of 100 3V The maximum voltage value at the inputs U1 U2 U3 and U4 against N is 300VAC Connected to the current inputs...

Страница 10: ...ty 10 Fig 4 Three phase measuring of line to line voltages and phase currents in MV and HV voltage with earthed center L1 L2 L3 I2 I3 U1 U2 U3 I1 Positive direction of energy flow U 100 V 3 U 100 V 3...

Страница 11: ...11 Fig 5 Measurement of line to line voltages U0 voltage phase currents I0 current in a compensated MV network 1 18 19 36 L1 L3 TL I2 I3 U1 U2 U3 U4 I1 Positive direction of energy flow U 100 V 3 U 10...

Страница 12: ...M c Energetick Apar ty 12 Fig 6 Measurement of line to line voltages and phase currents in the Aron connection at the MV network L1 L2 L3 I3 U1 U2 U3 I1 Positive direction of energy flow 1 18 19 36...

Страница 13: ...ser manual 13 Fig 7 Measurement of phase voltages voltage between neutral conductor and ground and phase currents including phase currents difference 1 18 19 36 I2 I3 I1 Positive direction of energy f...

Страница 14: ...ar ty 14 Fig 8 Three phase measurement of voltage and current at the LV output and measure ment of phase voltage and current of another LV output 1 18 19 36 L1 L3 L2 PEN L1 L3 L2 PEN Positive directio...

Страница 15: ...I4 250V 2A 80 230VAC 50Hz 90 300VDC U1 U2 U3 U4 N 1 5 RS232 RS485 max 30V 1A B A GPS antenna Tab 2 Description of the function of MEg39 terminals Terminal number Function 1 2 I1 current input 3 I1 cur...

Страница 16: ...I4 current output 10 11 12 13 14 15 16 L power supply 17 18 N power supply 19 RS232 GND 20 RS232 Tx DTE 21 RS232 Rx DTE 22 RS485 B negative idle level of signal 23 RS485 A positive idle level of signa...

Страница 17: ...and Plt THDU DC component fundamental harmonic up to 125th harmonic of voltage Centered subgroups of interharmonic component of voltage up to the order of 125 Level of voltage signals Flagged data Cur...

Страница 18: ...currents up to the order of 64 Active and reactive energy 6 registers for each phase The above stated data of continuous phenomena of voltage quality are stipulated for the voltages U1 U2 U3 and curre...

Страница 19: ...r supply MEg101 3a or MEg101 3b and GPRS communication unit type MEg202 3 if needed Units are interconnected using HBUS connector Power supply connecting MEg39 monitor can be supplied either directly...

Страница 20: ...s Connecting current circuits must be performed either with the power switched off or with short circuited secondary winding of the current instrument transformer All current inputs of the monitor MEg...

Страница 21: ...to select one phase or three phase measurement voltage level in the case of MV HV transformer ratio of the instrument current transformers and other measurement parameters as the case may be see in 1...

Страница 22: ...Energetick Apar ty 22 Fig 10 The main window of SW PQ when communication with MEg39 has been established Fig 11 The main window of SW PQ when communication with MEg39 has not been successfully establi...

Страница 23: ...PQ monitor MEg39 user manual 23 Fig 12 An example of settings measurement parameterization Fig 13 Measuring and inspection of connected values a time course of effective values...

Страница 24: ...not be exposed to effects of chemicals The monitor may only be transported in the original transport packaging supplied by the manufacturer Re calibration of PQ monitors MEg39 class A is recommended...

Страница 25: ...30 months after shipping from the manufacturer Defects occurring during this warranty period and provably due to defective design faulty craftsmanship or mate rial defects shall be repaired by the ma...

Страница 26: ...and U3 Supply voltage 230VAC 50Hz Operating conditions Operating temperature 20 C to 55 C Settle time 10minutes Relative humidity 10 to 90 non condensing Storage Storing temperature 30 C to 60 C Prot...

Страница 27: ...nt techniques Radiated radio frequency electromagnetic field immunity test Power supply Supply voltage terminals 16 18 90VAC to 230VAC 10 50Hz 100VDC to 300VDC 10 HBUS supply voltage 8VDC to 12VDC max...

Страница 28: ...tting of voltage level LV MV and HV Rated phase voltages Un P N 230VAC 100 3VAC JRated delta voltages Un P P 400VAC 100VAC Measuring range of phase voltages 300VAC 190VAC Maximum input voltage P N 300...

Страница 29: ...licker Pinst max A 8 Pst Pst 1 0 sinus right angle Voltage phenomena A Amplitude 0 2 Un Duration 1period 5 Un 150 Un 0 02sec 60sec Interruption A Duration 1period 0 02sec 180sec Asymmetry A 0 1 0 5 u2...

Страница 30: ...on of SW PQ www e mega cz 2 User description of Data Viewer www e mega cz 3 User description of WebDatOr www e mega cz Manufacturer MEgA M c Energetick Apar ty a s 664 31 esk 390 Czech Republic Tel 42...

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Страница 32: ...PQ monitor MEg39 User manual M c Energetick Apar ty a s 664 31 esk 390 Czech Republic www e mega cz Edition 2 2014...

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