LG LGES-5048 User Manual page 17

Special adjustable settings
The inverter has a field where the user can set functions, such as trip points, trip time, time of
reconnection, active and invalid of QU curve and PU curve etc. by special firmware. Please contact
Technical Support for the special firmware and adjustable methods
Declarations For The Backup Function
The back-up output of LGES hybrid inverters have limited overload ability.
For details please refer to the technical parameters (Page 30).
The inverter has self-protection de-rating at high ambient temperature.
The following statement lays out general policies governing LGES-5048 (&NS).
1. Standard PV installation typically consists of the connection of the inverter with both panels and
batteries. In the case where the system is not connected to the batteries, the back-up function is
strongly not advised for use. Manufacturer shall not cover the standard warranty and be liable for
any consequences arising from users not following this instruction.
2. Under normal circumstances, the back-up switching time is less than 10 ms (the minimal condition
to be considered as the UPS level). However, some external factors may cause the system failing
on back-up mode. As such, we recommend the users to be aware of conditions and follow the
instructions as below:
• Do not connect loads when they are dependent on a stable energy supply for a reliable operation.
• Do not connect the loads which may in total exceed the maximum back-up capacity. Even when
grid is present, this will cause overload.
• Try to avoid those loads which may create very high start-up current surges such as inverter air-
conditioner, high-power pump etc.
• Due to the condition of the battery itself, battery current might be limited by some factors
including but not limited to the temperature, weather etc.
Acceptable Loads Are As Below:
LGES-5048 series inverter is able to supply a continuous 4600VA output or maintain a 6900VA
output less than 10 seconds on back-up side to support loads. The inverter also has self-protection
against de-rating at high ambient temperature.
• Inductive Load: Maximum 1.5KVA for single inductive load, maximum 2.5KVA for total inductive
load power.
• Capacitive Load: Total capacitive load (like computer, switch power etc.)power ≤3.0KVA.
(Any load with high inrush current at start-up is not accepted)
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