Position
Designation
E
Medium-voltage switchgear*
F
AC Output
G
Low-voltage transformer*
H
Station subdistribution
I
External communication terminal
K
Communit*
* optional
3.13
Operating and Display Elements
3.13.1 Switch in the Inverter
3.13.1.1 Key Switch
The key switch is used to switch the inverter on and off.
Figure 13: Switch positions of the key switch
Position
Designation
A
Switch position
Stop
B
Switch position
Start
Switch position Start
If the key switch is turned to
Start
, a motor drive switches the DC switchgear on and the inverter switches from the
operating state "Stop" to the operating state "Grid monitoring". Provided that there is sufficient irradiation and a valid
utility grid connection, the inverter switches to feed-in operation. If there is insufficient irradiation and the input voltage
is therefore too low, the inverter remains in the operating state "Grid monitoring".
Switch position Stop
If the key switch is turned to
Stop
while the inverter is in the operating state "Grid monitoring", a motor drive switches
the DC switchgear off. The inverter switches to the operating state "Stop". If the key switch is turned to
Stop
while the
inverter is in the operating state "MPP load operation", the inverter switches to the operating state "Shutdown". Once
shutdown is complete, the AC contactor and the DC switchgear are opened automatically and the inverter switches to
the operating state "Stop".
3 Product Overview
SMA Solar Technology AG
System Manual
27
MVPS22JP-SH-en-11
Summary of Contents for 1000-1SC
Page 257: ......
