Global Mainstream Dynamic Energy Technology Ltd.
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User Manual
GHESS 3.7-4.8-SL hybrid system
To Meter
DC BREAKER
To Inverter
To Cabinet
To Meter
DC BREAKER
To Inverter
To Cabinet
Figure 60 Battery cabinet DC Breaker
5.3 System Operating Instructions
5.3.1 On-grid Operation
The hybrid inverter has 2 options of operation mode:
1. Self-use Mode
If there is enough sunshine, PV energy supplies the load first and then charges battery packs; if
the load power is covered and battery is full charged, surplus energy will be fed into the public
grid to acquire the FIT.
If there is no sufficient PV energy, the system discharges the battery pack first; if PV power and
battery discharging power is smaller than the load power, then the grid co-supply energy to the
load.
2. Time of Use Mode (Peak Shaving)
The system charges the battery packs at off-peak time (pre-set charging time); discharges the
battery packs at peak time (pre-set discharging time).
5.3.2 Off-grid Operation
The Powervortex3100 / 3700TL hybrid inverter has integrated backup function.
Note: maximum charging current, maximum discharging current, discharging stop
voltage and charging stop voltage should be set before commissioning to maintain
battery’s lifetime. These parameters are set in LCD screen.
5.4 System Maintenance
When maintaining the system, power off the Powervortex3100/3700TL. Please obey the following
