ABB REF 542plus User Manual

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A051656
Fig. 20.6.5.-1 Char map page
20.6.6. LCD contrast
The LCD screen contrast can be adapted to different light condition from this
submenu.
A051657
Fig. 20.6.6.-1 Adjusting the LCD contrast
20.6.7. Load flow direction
The load flow direction determines how REF 542plus computes energy and power.
It is set with the Operating Tool and it is also dependent upon the current and
voltage transformers (or sensors) connections in the primary parts.
*
FORWARD: the power is flowing from the switchgear to the load (outgoing
feeder).
*
BACKWARD: the power is flowing into the switchgear (incoming feeder).
Multifunction Protection and Switchgear Control Unit
Operator's manual
REF 542plusREF 542plus
1MRS755869

ABB REF 542plus Specifications

General

Brand	ABB
Model	REF 542plus
Category	Control Unit
Language	English