8
GMC-I Gossen-Metrawatt GmbH
4.3
Meanings of Symbols on the LCD
U
Main display
is not/cannot be calibrated,
if
U
is displayed.
Correct connection:
Continously lit phase symbols
Phase failure:
Symbol for affected phase is cleared from display.
Incorrect phase sequence:
Phase symbols blink in the following order: 3-2-1.
Negative power:
Respective phase symbol blinks.
4 quadrant display of instantaneous power: posi-
tive or negative active power P, positive or nega-
tive reactive power Q.
For bus connection: appears when the
meter transmits a data packet.
Main display
(active energy
Etot
* in kWh or MWh)
Auxiliary display
(instantaneous power
Pmom
* in kW or MW)
Error: alternating error code and instantaneous power
* U138x: CT and VT are taken into consideration