Meter version
I
max
Meter constant
Direct connected
(D2)
120 A
500 imp/kWh
(500 imp/kVAh
500 imp/kvarh)
Direct connected
(D1)
85 A
1.000 imp/kWh
(1.000 imp/kVAh
1.000 imp/kvarh)
CT operated
(T1)
6 A
10.000 imp/kWh
(10.000 imp/kvarh,
10.000 imp/kVAh)
The emitted pulse rate depends on the meter version and load current.
In the meter test mode pulse rate is increased to 40.000 imp/kWh (kVAh/imp and kvarh/imp) in order to
shorten time needed for testing the meters at low loads.
Two pushbuttons are built in the meter cover
3
2
1
3
1
1
– Data scroll pushbutton
2
– Reset pushbutton
3
– Cover of the Reset pushbutton
Pushbuttons on the meter cover
RESET
- an orange pushbutton under the hinged door that is fixed to the meter cover
Its primary function is to perform manual billing reset of the meter.
DATA SCROLL
- a blue pushbutton that is always accessible. Its primary function is to display 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 or a function whose name
is displayed on the LCD is selected.
c.
Prolonged - pressing longer than 5 sec.
- the meter is returned up for one level of operation (e.g. on the third level it is necessary to press
the blue pushbutton
three times and always keep it pressed for
more than 5 sec. in order to return to the automatic data display mode).
DISPLAY TESTING
A display is tested to check if all its segments function properly. In the automatic data display the blue
pushbutton should be pressed for a short time (Tp < 2 s). The display is tested for 10 seconds and all its
segments are displayed. After 10 seconds the meter returns to automatic data display
mode automatically.