Product Introduction; Intended Usage - GE GEP12-L-10 User Manual

bear any consequences caused by unauthorized actions which will lead to potential injury to
people and damage to inverters.
• Static electricity may damage electronic components. Appropriate method must be adopted to
prevent such damage to the inverter; otherwise the inverter may be damaged and the warranty
will be annulled.
• Ensure that the output voltage of the proposed PV array is lower than the maximum rated input
voltage of the inverter; otherwise the inverter may be damaged and the warranty will be annulled.
• If the equipment is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
• When exposed to sunlight, the PV array will generate very high voltage which can cause
electrical shock hazard. Please strictly follow the instruction we provided.
• PV modules should have an IEC61730 class A rating.
• Prohibit inserting or pulling the AC or DC terminals when the inverter is operational. Or the
inverter will be destroyed.
Only DC connectors provided by Manufacturer are permitted for use, otherwise the inverter may
be damaged and the warranty will be annulled.
• The inverter can exclude the possibility of DC residual currents to 6mA in the system,Where an
external RCD is required in addition to the built-in RCMU, type A RCD must be used to avoid
tripping.
• The default photovoltaic module is not grounded.
• It is recommended to add a fuse when there is more than two PV string inputs into one MPPT.
The IP65 premise is that the machine is completely sealed. Please install it within one day after
unpacking, otherwise please block the unconnected port and do not open it to ensure that the
machine is not exposed to water and dust.
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3 Product Introduction

3.1 Intended Usage

The GEP series which is a Three or Six MPPT, three phase transformer-less grid-connected
inverter which is a crucial unit between the PV string and the utility grid in the PV power system.
Inverter is dedicated to converting directing current generated by the PV module into alternating
current, and feeding it into the utility grid, this conforms to parameters of the local utility grid. The
intended usage of inverter is illustrated in the below figure.
A B
The reason why the inverter can't be connected to the PV module is that the positive or
negative terminal should be grounded, except when a transformer has been used between
the inverter and grid.
Item Description Note
A PV string Monocrystalline silicon, polycrystalline silicon and others.
B Inverter GEP Series
C Meter device Meter cupboard with distributed generation system
TN-S, TN-C, TN-C-S, TT, IT
D Utility grid
(different Model types with different types of utility grid as below)
GEP series
GEP12-L-10,GEP15-L-10,GEP20-L-10,GEP25-10,GEP30-10,GEP36-10,GEP29.9-10,GEP30-L-1
0,GEP35-L-10,GEP50-10,GEP60-10 support four different types(TN-S,TN-C,TN-C-S, TT) of grid.
please refer to the below figure.
TN-S TN-C
Transformer Transformer
L1
L2
L3
N
PE
PE
Inverter Inverter
kW.H
C
TN-C-S
Transformer Transformer
L1 L1
L2 L2
L3 L3
PEN N
PE
PE
PE
Inverter
D
TT
L1
L2
L3
N
PE
Inverter
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