Mega Meg39 User Manual Download Page 10 | Manualshive

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Mega Meg39 User Manual Download Page 10

Měřící Energetické Aparáty

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

(U/100/ )V

3

1

18

19

36

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9
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Summary of Contents for Meg39

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

Page 2: ......

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 31: ......

Page 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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