Disconnecting The Inverter From Voltage Sources - SMA Sunny Boy 3000TL-US Installation Manual

SMA America, LLC

10 Disconnecting the Inverter from Voltage Sources

Danger to life due to high voltages in the inverter
Death or serious injury due to electric shock.
• Only open the inverter in the order described here.
• Before performing any tasks, wait five minutes until the residual voltage has been drained from
the components.
Damage to the seal of the enclosure lid during sub-zero conditions
When opening the enclosure lid during sub-zero conditions, the seal of the enclosure lid can be
damaged. There may be an ingress of moisture, which can damage the inverter.
• Do not open the inverter when the outside temperature is below 23°F ( − 5°C).
1. Switch off or open all AC disconnecting switches and circuit breakers in the output circuit of the
inverter and secure against reconnection.
2. If an external DC disconnecting switch is available, switch off or open the DC disconnecting
switch.
3. Turn the rotary switch of the DC Disconnect to Off.
4. Wait until the LEDs and display switch off.
5. Remove all six screws of the lower enclosure lid
using an Allen key (AF 3) and remove the enclosure
lid.
Installation Manual
10 Disconnecting the Inverter from Voltage Sources
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