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MANUAL DATA DISPLAY 

 
Data are displayed on request as follows.  The meter  is  set  to  the  display  testing  mode.   During the LCD test, 
the blue pushbutton is pressed  for  a  short  time  (Tp  <2  s).  The 

Std  dAtA 

title is displayed. In this way a menu 

for selecting data display on request is entered. 

 

 

 

In order to enter into the data display on request menu, the blue pushbutton should be pressed for a long time 
(2 s < Tp < 5 s). The first data from the Manual scroll list is displayed on the LCD. For displaying the following 
data from the Manual scroll list (see below), the blue pushbutton should be pressed for a short time again. 

 

If the blue pushbutton has not been pressed for some time, the meter automatically returns back into the Auto 
scroll mode. 

 

The exit from the Manual data display mode is performed by prolonged pressing the blue push- button 
(Tp > 5 s). 
 

Manual Scroll List 

 

Active energy registers  

 

1.8.0

 

Positive active energy (A+) total  [kWh]

 

1.8.1

 

Positive active energy (A+) in tariff T1 [kWh]

 

1.8.2

 

Positive active energy (A+) in tariff T2 [kWh]

 

2.8.0

 

Negative active energy (A-) total [kWh]

 

2.8.1

 

Negative active energy (A-) in tariff T1 [kWh]

 

2.8.2

 

Negative active energy (A-) in tariff T2 [kWh]

 

 Instantaneous power registers  

 

21.7.0

 

Positive active instantaneous power (A+) in phase L1 [kW]

 

41.7.0

 

Positive active instantaneous power (A+) in phase L2 [kW]

 

61.7.0

 

Positive active instantaneous power (A+) in phase L3 [kW]

 

22.7.0

 

Negative active instantaneous power (A-) in phase L1 [kW]

 

42.7.0

 

Negative active instantaneous power (A-) in phase L2 [kW]

 

62.7.0

 

Negative active instantaneous power (A-) in phase L3 [kW]

 

 Electricity network quality registers  

 

31.7.0

 

Instantaneous current (I) in phase L1 [A]

 

51.7.0

 

Instantaneous current (I) in phase L2 [A]

 

71.7.0

 

Instantaneous current (I) in phase L3 [A]

 

32.7.0

 

Instantaneous voltage (U) in phase L1 [V]

 

52.7.0

 

Instantaneous voltage (U) in phase L2 [V]

 

72.7.0

 

Instantaneous voltage (U) in phase L3 [V]

 

 Miscellaneous registers used in sequences  

 

0.4.2

 

Current transformer ratio

 

0.9.1

 

Current time (hh:mm:ss)

 

0.9.2

 

Date (YY.MM.DD or DD.MM.YY)

 

 
 
 
 
 
 
 
 

Summary of Contents for MT174

Page 1: ...asses A and B as well as with the IEC 62053 21 and IEC 62052 11 international standards for electronic meters of active energy for classes 1 and 2 and optionally with the IEC 62053 23 international standard for electronic meters of reactive energy for classes 2 and 3 A built in time switch complies with the IEC 62054 21 and IEC 62052 21 standards It enables energy registration in up to four tariff...

Page 2: ...indirect pressure to the conductors the terminal screws do not damage it The current terminals make a reliable and durable contact regardless if the conductor is made of copper or aluminium Voltage metering elements are power supplied via potential links Sliding potential links are self braking and enable easy disconnection of current and voltage metering circuitry In the metering mode they should...

Page 3: ...ntial links under meter cover Terminal blocks of direct connected meters for Imax 85 A 1 2 3 1 Detector of terminal cover opening 2 Phase voltage test 3 Sliding potential links opened contacts contacts Potential links in the terminal block of direct connect meters for Imax 120A ...

Page 4: ...al block of a CT operated meter 4 1 3 2 1 Current terminals 3 Auxiliary terminals 2 Voltage terminals 4 Auxiliary voltage terminals for add on unit Auxiliary Terminals Up to six auxiliary terminals can be built in a terminal block They are used for tariff inputs impulse outputs or tariff outputs or RS485 interface Due to a limited number of auxiliary terminals all stated inputs and outputs as well...

Page 5: ...f the terminal block cover or is printed on the meter nameplate The meters can be connected in three phase four or three wire networks as well as in a single phase two wire network a Connection diagrams of direct connected meters MT174 b Connection diagram of CT operated meter MT174 ...

Page 6: ...mething is wrong with the meter In such a case the meter should be replaced 6 Check the L1 L2 and L3 indicators on the LCD if current conductors are connected correctly L1 L2 L3 indicators are displayed all three phase voltages are present Some of the L1 L2 L3 indicators are not displayed voltage in these phases is not present Check if current conductors of these phases are connected and or their ...

Page 7: ...r L1 L2 or L3 blinks and at the same time the arrow indicating export energy flow direction is displayed it indicates reverse energy flow through the metering element in that phase In the LCD bottom row there are eleven signal flags that indicate current valid tariff meter status and alarms The meaning of signal flags see item 2 5 3 is engraved on the meter name plate below them DATA DISPLAY Data ...

Page 8: ...ver opening detector is built into the meter 2 The flag is active only if an external magnetic field detector is built into the meter option 3 The flag could be implemented only at one direction energy flow and at absolute energy meters 4 The flag indicates that Li battery is low and should be replaced 5 The flag is active only if no power data displaying in the LCD was requested option 6 If the F...

Page 9: ...isplay data from the Manual sequence on request At the orange pushbutton the time duration of pressing does not influence to its function while at the blue pushbutton there are three different time durations of pressing each of them causing different effect a Short pressing shorter than 2 sec the next data in the menu is displayed b Long pressing longer than 2 sec and shorter than 5 sec a submenu ...

Page 10: ...ctive energy A total kWh 1 8 1 Positive active energy A in tariff T1 kWh 1 8 2 Positive active energy A in tariff T2 kWh 2 8 0 Negative active energy A total kWh 2 8 1 Negative active energy A in tariff T1 kWh 2 8 2 Negative active energy A in tariff T2 kWh Instantaneous power registers 21 7 0 Positive active instantaneous power A in phase L1 kW 41 7 0 Positive active instantaneous power A in phas...

Page 11: ... mos relay with a make contact that can changeover 25 W 100 mA 250 V on request In this case pulse transmission at a distance of 1 km is made possible The pulse constant is equal to one tenth of the meter constant and the standard pulse width is 100 ms However a smaller pulse constant or other pulse lengths can be set on request Optional pulse widths are 10 ms 20 ms 30 ms 40 ms 50 ms 60 ms 80 ms a...

Page 12: ...ated electromagnetic interference in the MHz range In a typical residential photovoltaic system a three phase electricity meter will be installed as shown on Fig 18 below This way it can measure the consumed electric energy and the energy delivered to the grid note a second single phase PV meter may be used to measure only the energy delivered by the solar panels Fig 18 A typical residential solar...

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