SMA 20000TL - Manual (Page 12)

Position Designation
F DC load-break switch
The inverter is equipped with a DC load-break switch. If the DC load-
break switch is set to the position I, it establishes a conductive connection
between the PV array and the inverter. Setting the DC load-break switch
to the O position interrupts the DC electric circuit and completely discon-
nects the PV array from the inverter. Disconnection takes place at all
poles.
G Lower enclosure lid
H Upper enclosure lid
Symbols on the Inverter and on the Type Label
Symbol Explanation
Inverter
Together with the green LED, this symbol indicates the operating state of
the inverter.
Observe the documentation
Together with the red LED, this symbol indicates an error (for trou-
bleshooting, see the service manual at www.SMA-Solar.com).
Data transmission
Danger
This symbol indicates that the inverter must be additionally grounded if a
second grounding conductor or equipotential bonding is required locally
(see Section 6.3.3 "Connecting Additional Grounding", page 28).
Danger to life due to electric shock
The product operates at high voltages. All work on the product must be
carried out by qualified persons only.
Risk of burns due to hot surfaces
The product can get hot during operation. Avoid contact during opera-
tion. Allow the product to cool down sufficiently before carrying out any
work.
Observe the documentation
Observe all documentation supplied with the product.
Direct current
4 Product Description SMA Solar Technology AG
Operating Manual STP20-25TL-BE-en-12 12