Sungrow SG100K3, Installation Manual

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1 1.1. Service Safety
Never work alone when servicing this equipment. Two persons are
required until the inverter is properly shut down and verified de-energized
with a meter.
1.2. Emergency Stop Button
The Emergency stop button will shutdown the inverter (disconnects the AC
contactor and stops the IGBT matrix) immediately when it is punched
(pressed down).
The inverter must be started up manually through LCD control menu if
users want to recover the operation after the button is punched.
Check “Start the inverter” of chapter 6 in the operation manual for details.
1.3. AC Circuit Breaker
The AC circuit breaker is one of the primary disconnects for the inverter. The
inverter's doors cannot be opened until the switch of the AC circuit breaker is in
the OFF position. When the AC main switch is in the OFF position, all AC
power is disconnected (not live), except the following areas:
• The input side of the AC circuit breaker (the utility grid)
• The DC input terminals (if the PV array is connected and energized)
To operate the inverter the AC circuit breaker switch must be in the ON position.
1.4. DC Circuit Breaker
The DC circuit breaker is also the primary disconnect for the inverter. The
inverter's doors cannot be opened until the switch of the DC circuit is in the
OFF position.
When the DC main switch is in the OFF position, all DC power is disconnected
(not live), except the following areas:
• The input side of the AC main switch (the utility grid)
• The DC input terminals (if the PV array is connected and energized)
To operate the inverter the DC circuit breaker switch must be in the ON position.