Goodwe GW15K-ET - Page 15

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03 Product Introduction
User Manual V1.6-2024-03-20
No. Parts Description
1 PV string The PV string consists PV panels series connected.
2 Battery • Select the battery based on the approved battery list matched with
the inverter.
• Batteries of the same brand, model, and capacity are preferred
in a parallel system. If necessary, batteries of the dierent brand,
model, and capacity are also supported.
• Do not connect a single battery to multiple inverters. Otherwise,
the inverters may be damaged. Connect the battery to the master
inverter when a single battery is applied.
• All the batteries in the parallel system are SOC balanced when the
system is working on-grid.
3 Battery
breaker
Select the breaker in compliance with local laws and regulations. 2P
DC breakers of the following specications are recommended: nominal
current≥63A, and nominal voltage≥1000V.
4 Inverter • Supports ET series (15-30kW) inverters. Inverters of the same model
are preferred in one parallel system. If necessary, inverters of the
dierent models are also supported.
• When the inverter models are dierent in the parallel system, the
one with the highest power should be set as the master inverter.
• At most 4 inverters can be connected in the parallel system. The
power limit of the system shall meet the requirements of local laws
and regulations.
• The parallel system cannot work properly once the master inverter
is abnormal. When any salve inverter is abnormal, the system,
except for the abnormal inverter, still works properly.
5 Ezlink • In parallel scenarios, only the smart dongle Ezlink is supported for
parallel networking.
• Only one Ezlink is required in one parallel system. The inverter
connecting to Ezlink and smart meter is considered as the master
inverter, while all the others are slave inverters. The master inverter
sends commands to slave inverters. The system communication
may be abnormal if other inverters install with the Ezlink.
6 ON-GRID
breaker
An external AC breaker needs to be installed on the AC side of
the inverter. The AC breakers should be prepared by customers.
Recommended specications:
• GW15K-ET: nominal current ≥32A, nominal voltage ≥400V
• GW20K-ET: nominal current ≥ 40A, nominal voltage ≥ 400V
• GW25K-ET: nominal current ≥50A, nominal voltage ≥400V
• GW29.9K-ET, GW30K-ET: nominal current ≥ 63A, nominal voltage ≥
400V