SMA SUNNY ISLAND 4.4M Operating Manual page 132

13 Cleaning and Maintenance
The emergency charge mode is only an option in single-phase off-grid systems. For all other Sunny Island systems, the
system configuration must be adjusted temporarily.
Danger to life due to electric shock when live components or cables are touched
High voltages are present in the conductive components or cables of the product. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the product from voltage sources and ensure it cannot be reconnected before working on the
device.
• After disconnection, wait 15 minutes until the capacitors have discharged.
• Observe all safety information on components associated with the product.
• Wear suitable personal protective equipment for all work on the product.
Restricted management functions in emergency charge mode
In emergency charge mode, the generator management is not active. The limits for voltage, current and frequency
are not monitored. Set the maximum current consumption of the battery inverter for charging the battery in
emergency charge mode. The battery inverter does not record additional stress on the generator caused by loads.
Requirement:
☐ Lead-acid batteries must be connected (for lithium-ion battery see documentation of the battery manufacturer).
Procedure:
• Connect the generator with connection AC1.
• Adjust the system configuration for the emergency charge mode (not required for single-phase off-grid system).
• Charge the battery.
• Disconnect the generator from connection AC1.
• Restore the original system configuration (not required for single-phase off-grid system).
• Start the off-grid system.
Connect the generator with connection AC1.
1. Disconnect the inverter from all voltage sources (see Section 12, page 126).
2. Open the inverter (see Section 13.10, page 138).
3. Only if the system is not a single-phase off-grid system, connect the system as a single-phase off-grid system
(single system) temporarily (see system description "Off-Grid Systems" of the battery inverter). Observe the
following rules in systems with more than 1 battery inverter: If the system is a single-cluster system (single-phase or
three-phase), the master must be temporarily connected as a single-phase off-grid system. If the system is a
multicluster system, the master of the main cluster must be temporarily connected as a single-phase off-grid system.
4.
Danger to life from electric shock due to incorrect connection of the neutral conductor
Connecting the neutral conductor incorrectly can cause failure of the protective functions in the system. This can
result in death or serious injury.
• Ensure that the generator is connected to AC2 as specified for off-grid systems (see Section 6.5.6,
page 40).
5. Bridge the terminals AC1 Loads/SunnyBoys L and AC2 Gen/Grid L.
6. Close the battery inverter (see Section 13.10, page 138)
132 SI44M-80H-13-BE-en-15
DANGER
WARNING
SMA Solar Technology AG
Operating manual