EG4 Electronics ESS 18kPV Hybrid Inverter User Manual
- June 2, 2024
- EG4 ELECTRONICS
Table of Contents
EG4 Electronics ESS 18kPV Hybrid Inverter
Specifications
- Product Name: EG4 18kPV Hybrid Inverter
- Preset Working Modes: Peak Shaving, Backup/AC Charge Mode, PV
- Charge Priority, Force Discharge/Sell To Grid, Self-Consumption
- System Customization: Extensive customization available
- Access: EG4 Monitoring System via web browser
Activating Different Working Modes
- Login to the EG4 Monitor Center.
- Select the station to be configured.
- Select Read.
- Navigate to the Maintenance tab.
- Select Working Mode in the top-right corner.
- Scroll down to the Working Mode Setting section.
Configuring the System
The user can configure the system by setting a combination of parameters
and time of use periods:
Working Modes and Settings
- Peak Shaving: Description here.
- Backup/AC Charge Mode: Description here.
- PV Charge Priority: Description here.
- Force Discharge/Sell To Grid: Description here.
- Self-Consumption: Description here.
Frequently Asked Questions (FAQ)
Q: How do I access the EG4 Monitoring System?
A: To access the EG4 Monitoring System, you need to log in through a web
browser using the provided credentials.
EG 4® 18KP V M ON I TOR SYS TEM WORKI N G MODES
The EG4 18kPV Hybrid Inverter has several different preset working modes that allow the user to configure the system to meet their demands through extensive customization. By following this guide, the user can easily set the station’s needs depending on the time of day among several other factors.
The image below represents an 18kPV ESS configured for the user’s demands through the monitoring software. Each colored bar represents a specific working mode.
Working Mode Setting Example
From 0:00 to 04:00 the system will be in peak-shaving mode to prevent and/or limit using the grid during periods of peak electrical prices. From 04:00 to 06:00 the system will utilize grid power as top priority to charge the batteries. From 06:00 to 12:00, the system is configured to charge batteries using solar as the top priority with grid as the backup. From 12:00 to 16:00, the system is set to use battery power as top priority for loads and/or selling back to the grid. From 16:00 to 24:00, the system will be set into self-consumption mode to power loads from battery as top priority with solar as a backup.
Working Mode Definitions:
Self-Consumption Mode: The system will operate in a pre-set priority system.
In this mode, the user will experience the inverter drawing power from the
solar arrays to power the loads. When/if the solar power is insufficient, the
inverter will then draw from the battery bank for loads. Only as a last resort
will the inverter switch to bypass mode to power loads from AC input.
Backup/AC Charge Mode
The system will operate in a pre-set priority system. In this mode, the user
will experience the inverter drawing power from the solar arrays to power the
loads. When/if the solar power is insufficient, the inverter will then switch
to bypass mode to power loads from AC input. The inverter will only power
loads with battery when there are no other options.
Force Discharge/Sell To Grid
The user can configure the inverter to forcefully sell PV and/or battery power
back to the grid through a combination of settings.
Peak Shaving
Peak shaving is used to avoid peak demand charges from the grid by using a
combination of settings to limit the power drawn from the grid.
PV Charge Priority
This mode allows the user to prioritize battery charging from PV,
specifically. If there is excess PV power after the batteries are charged,
then the inverter will utilize the excess power to send to loads.
To activate these different working modes, the user must login to the EG4
Monitoring System through a web browser. Follow the steps listed in this guide
to navigate to the working modes section of the monitoring system.
-
Login to the EG4 monitor center.
-
Select the station to be configured.
-
Select “Read”.
-
Navigate to the “Maintenance” tab.
-
Select “Working Mode” in the top-right corner.
-
Scroll down past “Application Setting” and find the “Working Mode Setting” section.
The user will now have direct access to configure the system to their own
needs by utilizing a combination of settings and time of use periods.
The following section describes the different modes of operation and
descriptions of each setting associated with each mode.
Peak Shaving
When setting the station into this mode, the inverter will use peak-shaving to
avoid peak demand charges from the grid. The user will be able to configure
the system to pull limited (or no) power from the grid for charging batteries
or powering loads by setting maximum power in kW, according to SOC/voltage,
and by setting time of use.
Upon selecting the working mode, the system must be configured using the
settings listed below:
Grid Peak-Shaving
Enable or disable grid peak-shaving.
Grid Peak-Shaving Power(kW)/Grid Peak-Shaving Power2(kW)
Set the maximum amount of power that will be drawn from the grid.
Start Peak-Shaving Volt 1(V)/Start Peak-Shaving Volt 2(V)
Set the starting point of peak-shaving when using voltage setpoints for
batteries.
Start Peak-Shaving SOC 1(%)/Start Peak-Shaving SOC 2(%)
Set the starting point of peak-shaving when using SOC setpoints for batteries.
T1/T2 Start
Set the start time of peak-shaving depending on SOC/voltage as configured
above.
T1/T2 End
Set the end time of peak-shaving depending on SOC/voltage as configured above.
Backup/AC Charge Mode
When setting the station into Backup/AC Charge mode, the user can configure
the system to prioritize charging batteries from grid power. The user can
configure to charge with grid based on maximum power in kW, SOC/voltage, and
by setting times of use.
Upon selecting the working mode, the system must be configured using the
settings listed below:
AC Charge Enable
Enable or disable the system’s ability to charge batteries from the grid.
AC Charge Power(kw)
Set the maximum power drawn from the grid to charge batteries.
AC Charge Based On(SOC/Volt/Time)
Configure how the system will charge batteries from the grid by setting custom
voltage points, SOC% of batteries, or by time.
Backup/Stop AC charge SOC(%)/Volt (V)
Percentage at which the system will stop charging batteries from the Grid.
Battery Backup Mode
When enabled, the system will use the batteries as a last resort during the
set timeframes.
PV Charge Priority
When setting the station into this mode, the order of priority for solar will
be Battery > Load > Grid.
During the PV Charge Priority period, loads are first supplied from grid
power. If there is excess solar power after charging the batteries, the excess
solar will power the loads along with the grid.
Upon selecting the working mode, the system must be configured using the
settings listed below:
-
PV Charge Priority
Enable or disable the battery priority/PV Charge Priority working mode. -
PV Charge Power(kW)
Set the maximum amount of power to charge the batteries from solar. -
PV Charge Priority Stop SOC(%)
Set the stop point for Battery Priority according to SOC%.
Battery Priority Stop Volt(V)
Set the stop point for Battery Priority according to voltage.
T1/T2/T3
Set up to 3 different start and stop times for the PV Charge Priority working
mode.
Force Discharge/Sell To Grid
When setting the station into this mode, the batteries will be forced to
discharge within the set periods of time. During this period, the inverter
will discharge the battery at the power set by “Forced Discharge Power(kW)”
until the battery SOC or voltage set point reaches the “Stop Discharge” value.
Upon selecting the working mode, the system must be configured using the settings listed below:
Forced Discharge Enable
Enable this setting to forcefully discharge the station’s battery bank.
Export PV Only
Enable this setting to sell back generated PV power to the grid.
Forced Discharge Power(kW)
Set the maximum power limit of battery discharge.
Stop Discharge SOC(%)
Stop the forced discharge upon reaching the set SOC%.
Stop Discharge Volt(V)
Stop the forced discharge upon reaching the set voltage point.
T1/T2/T3
Set up to 3 different start and stop times for the Force Discharge/Sell To
Grid working mode.
Self-Consumption
The station will default to Self-Consumption mode. The order of priority for powering loads is Solar > Battery > Grid. The order priority for solar power is Load > Battery > Grid which creates an ideal scenario when needing to prioritize solar power generation over other types of power.
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