Owner`s manual

© 2010 Magnum Energy, Inc.Page 48
4.0 Operation
4.0 Operation
The MMP enclosure provides you with circuit breakers/disconnects to easily operate and maintain
your inverter/battery system. These breakers
are used as the main power disconnecting means
and/or overcurrent protection. Refer to Figure 4-1 (MMP Functional Diagram) to see the functional
operation of the breakers within the MMP enclosure.
Info: Figure 4-1 is for descriptive purposes only, for specifi c wiring please refer to the
relevant wiring diagram in the Installation section of this manual.
Info: For information on operating the inverter, refer to it’s Owner’s Manual.
If a short-circuit condition occurs, or if a load is placed on these circuit breaker that is more than
its rated capacity, they will trip OFF (down). On the AC breakers, a red indicator will show through
the clear window on the circuit breaker to show a tripped condition. On the other circuit breakers
the handle will trip all the way to the OFF position.
Before resetting the breaker, fi rst determine the cause of the overcurrent fault. Then, reset the
circuit breaker by turning it all the way OFF and then all the way back ON. For proper maintenance
and longer life, the circuit breakers should be turned off and on several times at least once a year.
This will help to prevent the contacts inside from sticking together.
To shut the MMP/Inverter System OFF completely, all of the circuit breakers in the MMP
enclosure should be switched to the OFF position.
Figure 4-1, MMP Functional Diagram
EXTERNAL AC Terminal BlockAC IN AC OUT
AC
OUTPUT
AC
INPUT
INVERTER
(AC side)
INVERTER AC Terminal BlockINV IN INV OUT
AC INPUT
Breakers
DC Side
AC Side
MMP Enclosure
AC
SOURCE
FROM MAIN
PANEL
(C
USTOMER
CONNECTION)
DC
INPUT
INVERTER
(DC side)
DC Shunt
DC NEG Busbar
DC POS Busbar
INV DC Breaker
BATTERY
BANK
(Customer
Connection)
NEG (-)
POS (+)
AC BYPASS AC OUTPUT
ON
OFF
ON
OFF
DC
LOADS
(Customer
Connection)
DC
Breakers
(optional)
AC
LOADS
IN SUB-
PANEL
(C
USTOMER
CONNECTION)