Axpert MEX-1500/ MEX-3000 Service manual
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2. Functional block
Axpert MEX 1.5KVA 3KVA series production employ a double conversion topology, comprise following
functional blocks, as shown in figure 2.1
PWM SCC (EX)
MPPT SCC (MEX)
DC/AC Inverter
AC/DC Rectifier
DC/DC Converter
Charger
DC Fuse
Input Breaker
Thermal Switch Protection
t
o
NTC Sensor
t
o
NTC Sensor
Reverse Polarity Protection
Safety Relay
Load Detection
PV +
PV -
L
I/P
N
I/P
L
O/P
N
O/P
B
Battery -
Output Relay
Isolation
Figure 2.1 function block diagram
