Service Safety; Emergency Stop Button; Ac Circuit Breaker; Dc Circuit Breaker - Sungrow SG100K3 Installation Manual

Grid-connected inverter

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1 1 .1. Service Safety

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.

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.

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.

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.

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