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Operating Procedures; Electrical Safety - LG CHEM RESU10H Owner's Manual

Lithium-ion storage battery
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TO TURN PV AND BATTERY SYSTEM ON
Turn ON Battery internal Auxiliary Switch (if applicable) and internal circuit breaker switch (refer to Battery
1.
Operating Manual)
Turn ON Battery DC Isolator(s) located adjacent to inverter.
2.
Turn ON PV Array DC Isolator(s) located adjacent to inverter.
3.
Turn ON the Inverter AC Isolator at the Inverter (if installed) and the Solar Supply Main Switch at the AC
4.
switchboard.
Systems with Backup function ONLY: Turn ON the Backed Up Loads AC Isolator.
5.
Note: If enable switches are present on the Inverter and Battery Interface, ensure they are in the ON
position.
Note: The "Solar Supply Main Switch" might be refered to "Main Switch (Inverter Supply)".
TO TURN PV AND BATTERY SYSTEM OFF
1.
Turn OFF the Solar Supply Main Switch at the AC switchboard and the Inverter AC Isolator at the Inverter
(if installed).
2.
Systems with Backup function ONLY: Turn OFF the Backed Up Loads AC Isolator.
Turn OFF the PV Array DC Isolator(s) located adjacent to inverter.
3.
Turn OFF Battery DC Isolator(s) located adjacent to inverter.
4.
Turn OFF Battery internal Auxiliary Switch (if applicable) and internal circuit breaker switch (refer to Battery
5.
Operating Manual)
Warning: Depending upon the system there may be more than one PV Array DC Isolator.
Warning: To effectively isolate the wiring between the AC Isolator and switchboard, the Solar
Supply Main Switch located in the switchboard must also be in the OFF position.
Warning: PV Array DC Isolators do not de-energise the PV array and array cabling.
Caution: If the Solahart Battery system is expected to be OFF for longer than one month, refer to
the instructions supplied with the Battery.
SAFETY REQUIREMENTS
The voltages and currents produced by the Battery system can be dangerous.
UNIQUE HAZARDS OF DC ELECTRICITY
Batteries typically operate using DC electricity. Once the current is flowing, breaking or opening a connection
(e.g. disconnecting a DC cable from the Inverter) can cause a DC electrical arc. Unlike arcs occurring in
conventional low voltage AC wiring, DC arcs are not self-extinguishing. They are a potentially lethal burn and
fire hazard, capable of creating high temperatures that can destroy contacts and connectors.
EARTH FAULTS
An earth fault is a system fault where a short circuit is formed between the DC circuitry of the PV and Battery
system and earth. As the PV system owner, please be aware of the method of communication of earth faults
on your system. Refer to Earth Fault Alarms in the Solahart Owner's Guide for PV systems.

OPERATING PROCEDURES

ELECTRICAL SAFETY

9

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