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Step 6: External wiring (PV/Grid/Load)
Item.
Description
1
Load connector
(Remark: Back-up load port)
2
Grid connector
3
GEN connector
4
CT connector
5
GEN control port
6
PV connector
PV connection
Only solar PV systems that comply with the local
safety laws and regulations and with the technical
parameters specified in this manual are suitable for
being connected to the AEG energy storage system.
To connect the photovoltaic system to the AEG energy
storage system, a DC connector specifically designed
for connection with storage systems must be used.
Using other connectors / connection devices without
explicit authorization from Solar Solutions may result
in damage to the AEG energy storage system, unstable
operation or fire, for which Solar Solutions will not take
any direct or joint
liability.
Notes:
•
Recommended wire for PV connection: Ø 4mm².
•
PV terminal crimping: recommended torque
3.6–4.6 N•m.
•
The maximum open circuit voltage of each PV
string should never be higher than the maximum
AEG LOW VOLTAGE ENERGY STORAGE UNIT (4 kWH) INSTALLATION MANUAL
input voltage of the energy storage system.
•
Do not connect the PE wire (ground wire) to the
positive and negative poles of the PV strings,
otherwise it will cause damage to the energy
storage system.
•
Ensure that the PV string polarity matches the PV
connector, otherwise the energy storage system will
be damaged.
•
To avoid electrical hazard, the insulation resistance
of the PV panel to the ground should be greater
than the safety regulation.
•
Ensure that the wires of the cable correspond to
the connector terminals, and tighten the screws.
The crimping torque of the screws should be
1.5–2.5 N•m.
•
Use a multimeter to measure the voltage of the
DC input string, verify the polarity of the DC input
cable, and ensure that the voltage of each string is
within the allowable range of the system.
Grid and load connection
Only AC transmission cables that comply with the
local safety laws and regulations and with the
technical parameters specified in this manual are
suitable for being connected to the AEG energy storage
system.
The following table shows the recommended wire
specifications for safe system operation:
Grid side.
Recommended:
Ø 4 mm² wire
Notes:.
•
Terminal crimping of L/N/PE wires: recommended
torque 3.6–4.6 N•m.
•
Before connecting the AC power grid cable to
the energy storage system, lightning protection
and short circuit protection measures must be
taken in accordance with the local electrical safety
regulations. The PE cable (grounding cable) of the
energy storage system must be reliably grounded.
•
Connect the three wires L, N, and PE of the single-
phase public power grid to the corresponding AC
terminals, fasten them, and tighten the screws. The
crimping torque is 1.5–2.5 N•m.
•
Connect the three wires L, N, and PE of the load to
Load side
Recommended:
Ø 4 mm² wire
EN
PD202107 V1-21
17
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