3.3
System layout
KWh
KWh
PV generator
PV generator
Inverter with
DC isolator switch* &)
circuit-breaker
Load
Feed-in meter
Reference
counter
Grid monitoring point
Line protection
Line protection
Selective
main switch
Selective
main switch
Inverter with
DC isolator switch* &)
circuit-breaker
Fig. 5: Circuit diagram of a system with two inverters
Key
Definition / information on the connection
PV generator
The PV generator converts the radiant energy of sunlight
into electrical energy.
Inverter with circuit-breaker
The PV generator is connected to the device's DC connec-
tion.
Line protection
The circuit breaker is an overcurrent protection device.
Feed-in meter
The feed-in meter is to be specified and installed by the
power supply company. Some power supply companies also
allow the installation of your own calibrated meters.
Selective main switch
The selective main switch is to be specified by the power
supply company.
Reference counter
The reference counter is to be specified and installed by the
power supply company. This measures the amount of en-
ergy drawn.
DC isolator switch
Use the DC isolator switch to disconnect the device from
the PV generator.
Powador 30.0-72.0 TL3
Page 13
EN