Opening And Closing; Opening The Inverter - SMA SUNNY BOY 3000-US Installation Manual

SMA America, LLC
9

Opening and Closing

9.1 Opening the Inverter

Danger to life due to high voltages in the inverter
High voltages capable of causing electric shocks are present in the conductive components of the
inverter.
• Only open the inverter as described in this document.
Danger to life due to high voltages
The capacitors in the inverter require 5 minutes to discharge.
• Wait 5 minutes until the LEDs and the display switch off.
Risk of damage to the inverter due to moisture penetration
Electronic components in the inverter can be destroyed or damaged as a result of moisture
penetration. This may result in functional faults or the destruction of the inverter.
• Never open the inverter when it is raining or if there is a high level of humidity ( ˃ 95%).
Damage to the seal of the enclosure lid during frost
When opening the Sunny Boy in the event of frost, the seal of the enclosure lid can be damaged.
There may be an ingress of moisture, which can damage the Sunny Boy.
• Do not open the inverter when the outside temperature is below 23°F ( − 5°C).
1. Disconnect the AC miniature circuit-breaker and secure against re-connection.
2. Turn the rotary switch of the DC Disconnect to the
Off position and secure against re-connection.
3. If additional DC switch-disconnectors are available, switch off the DC switch-disconnectors and
secure against re-connection.
Installation Manual
9 Opening and Closing
SB30-40-US-IA-en-33 57