Load flow direction
The load flow direction determines how REF542plus 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).
A051658
Fig. 19.2.-26 Load flow direction visualization
19.3. Test page
This submenu allows testing the HMI and the primary part of the switchgear.
19.3.1. Test HMI
When the test HMI is selected, all its features will be tested by switching
them on and off.
HMI buttons are not available during the test. The displayed
information on the HMI does not reflect the switchgear’s actual
status. REF542plus is protecting the switchgear during the HMI
test. The HMI test takes a few seconds.
98
REF542plus
Multifunction Protection and Switchgear Control
Unit
Operator's manual
1MRS755869
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