Operation Of Sts At Each Mbs Position - Eaton Matrix Telecom Inverter System Installation And Operation Manual

Matrix Telecom Inverter System

Operation of STS at each MBS position

Mains Bypass (MBP)
Mains Static Switch (MSS)
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IPN 997-00012-68D
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
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
February 2010