Working Principle; Inverter Storage; Grid Type - Growatt MAC 30KTL3-X LV Installation & Operation Manual

3.4 Working Principle

Mac inverter's working principle is like following:
1. The PV panels gather solar to generate DC power to inverter.
2. With input current detection circuit, it can monitor all the PV panels' working status and use MPPT to track the
maximum power point.
3. With inverter circuit change DC power to AC power, and feed power back to grid per grid reuqirement.
4. With output isolation relay can isolate AC output and grid, if anything goes wrong on either inverter side or grid side,
isolation relay can disconnect inverter immediately.
On-grid connection system diagram:
A

3.5 Inverter Storage

1. Do not unpack the Inverter and store it in a ventilation dry place
2. Keep the storage temperature at -25℃ ~ +60℃ and humidity at 0-95%.
3. A maximum of four inverters with package can be stacked.
4. If the inverter has been long-term stored, inspections and tests should be conducted by qualified personnel before it is
put into use.

3.6 Grid Type

In the MAC series, the
50-70KTL3-X MV model grid connection method is shown in Figure (2).
B
A Photovoltaic module
B DC circuit breaker
C PV inverter
MAC 30-60KTL3-X LV
D
C
D
E
F
model grid connection method is shown in Figure (1), and the MAC
9 / 57
编号：GR-UM-C -00
E
AC circuit breaker
Meter
Grid
F