Requirements To Maintain Forced Load Sharing; Virtual Independent Mode - HindlePower ATevo Series Operating/Service Instructions Manual

13 Forced Load Sharing

13.5.1 Requirements to Maintain Forced Load Sharing

Several events can cause ATevos to break from Forced Load Sharing
and resume independent output control:
• communication failure between ATevos
• an ATevo is shut down
• an ATevo reports that it is not ready - which may be because of:
» ac input failure or low ac line.
» open DC Output Circuit Breaker (CB2)
» HLD or HVDC present
When the issue is corrected the ATevos resume load sharing and
again display the load-share indicator next to charger mode.

13.5.2 Virtual Independent Mode

Virtual Independent Mode detects when an external dc branch
breaker is opened while ATevos are in Forced Load Sharing. ATevos
not connected to the same dc bus cannot share load.
If either of these two (2) conditions persist for more than 25 seconds,
Forced Load Sharing ATevos will go into Virtual Independent mode:
• when total load shared between ATevos is less than 1.0 Amperes
• when output voltage of any Secondary ATevo, that is actively
sharing load, sags 1.5% under the Primary ATevo's output
voltage
This condition is cleared when the Primary ATevo detects the total
current supplied by all chargers is greater than 1.0 Ampere, and the
Primary ATevo itself is supplying at least 0.4 Amperes.
While in Virtual Independent mode, the ATevo will display 'Loadshare
Indep. Mode' on the last line of the display.
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ATevo