Matrix Telecom Inverter System
62
Copyright © 2008-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-68D February 2010
Operation of STS at each MBS position
Mains Bypass (MBP)
Mains Bypass:
• Load is powered through
the MBS by the Mains AC
• STS can be removed from
the system
• MBS can only be switched
to Mains Static Switch
position
• SCR2 open, SCR1 and Back-
feed Relay closed
• If SCR2 is short, the STS
will stay in off-line mode
Mains Static Switch (MSS)
Inverter Maintenance (MSS):
• Mains AC powers the load
through the static switch
• Inverters are on, but do not
provide load any power
• Inverters can be removed
from the system, but the
static switch cannot
• MBS can be switched from
to Mains Bypass or Normal
Operation position
• SCR2 open, SCR1 and Back-
feed Relay closed
• If SCR2 is short, the STS
will stay in off-line mode
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