Seg HighTECH MRG3 - Unit of the Measuring Values Displayed; Indication of Values Measured for over Current - and Earth Fault Protection

SEG Electronics GmbH Manual MRG3
56 DOK-TD-MRG3, Rev. D
As to operation:
After each reset (refer to 5.10.9) the min./max. storages are cleared. As from this instant there is no
time limit for the min./max. storage until the next reset By repeatedly pressing the
<SELECT/RESET> push button, the measuring values of the min./max. storage can be queried.
5.10.3 Unit of the measuring values displayed
The measuring values can optionally be shown in the display as a multiple of the "sek" rated volt-
age (xUn) or as primary rated voltage. According to this the units of the display change as follows:
Indication as
Range
Unit
Secondary voltage
000V - 999V
V
Primary voltage
.00V – 999V
1k00 – 9k99
10k0 – 99k0
100k – 999k
1M00 –- 3M00
V
kV
kV
kV
MV
Table 5.6: Units of the display
5.10.4 Indication of values measured for over current - and earth fault
protection
During normal operation, the following measuring values for over current – and earth fault protec-
tion can be displayed.
Applies to MRG3-I, MRG3-IU0; MRG3-IE, MRG3-IER
 Current in phase L1 LED: I + L1
 Current in phase L2 LED: I + L2
 Current in phase L3 LED: I + L3
Applies to MRG3-IU0; MRG3-U0; MRG3-IER
 Residual voltage LED: U + E
Applies to MRG3-IE; MRG3-IER
 Earth current LED: E
Applies to MRG3-IER
 Active portion of the earth current LED: E + EP
 Reactive portion of the earth current LED: E + E
Q
 Angle between I
E
and U
E
LED: U + I + E