Hybrid inverters for home and energy storage – GoodWe hybrid inverters with datasheet (PDF)

A hybrid inverter is a clever combination of a conventional inverter and a power storage system. It converts the direct current (DC) from your solar panels into usable alternating current (AC) and can also store solar power either internally or externally in a battery. This allows you to use your self-generated electricity at any time – even when the sun isn't shining.

Installing a hybrid inverter is particularly beneficial if you already have an existing solar power system. With a hybrid inverter, you can easily expand your existing system and immediately benefit from the advantages of energy storage.

Most inverters for hybrid systems with a battery storage system are intelligent devices that automatically regulate various parameters. These include the voltage (volts), the power (watts), and the quality of the electricity being charged to the battery.

Some inverters also have manual controls, allowing you to adjust the settings yourself. In this case, however, you should contact the manufacturer to find out which parameters can be adjusted and which cannot.

If you plan to install a hybrid system with an inverter and a battery storage unit, you should ensure that the inverter/storage unit is specifically designed for use in such a system. This is the only way to guarantee that it provides all the necessary functions and synchronizes optimally with the battery storage unit.

Also make sure that the relevant hybrid components, such as inverters and energy storage systems, are compatible with each other, as this is not always the case.

It is also important to know what requirements the inverter must meet. In particular, you need to consider whether the inverter is primarily intended for use with a photovoltaic system or a wind energy system. Different models are suitable depending on the intended use. The size of the photovoltaic system also determines the inverter requirements

• Module inverter
• String inverters
• Multi-string inverter
• Central inverter

Single-phase or three-phase inverter?

A three-phase inverter can offer many advantages over a single-phase inverter. For example, it can deliver higher voltage and power and is more robust. Above 4.6 kVA, a three-phase inverter is even mandatory. Of course, you could connect a 5.76 kW system to a 4.6 kVA inverter, but this would result in significant losses.

Small systems can still be operated with a single-phase inverter, but this is not advisable as there are no expansion or modernization options.

The difference between volt-amperes and watts

Volt Amps (VA) = Volts x Amps
Watts = Volts x Amps

In fact, at first glance, no difference can be discerned.

The difference lies in the details and in the perspective or application. Here are a few good approaches:

• The momentous difference between watts and volt-amperes
• The difference between volt-amperes (VA) and watts (W) explained simply
• What is the difference between VA and watts?

To simplify things:

I explained it to my children like this: Watts are the unit where electrical energy is used and applied, i.e., "consumed" or converted – into light, heat, etc.

Volt-ampere is where the electricity comes from and is ready for use. It's what's "waiting" at the wall socket, ready to be used.

This works quite well with regard to the inverter. The links above explain in detail why there are differences.

GoodWe ET series and the ET Plus series – also hybrid or bidirectional solar inverters

The ET series and the ET Plus series, also called hybrid or bidirectional solar inverters, offer energy management in a PV system that includes solar modules, a battery, consumers and a grid connection.

The energy generated by the PV system is primarily used to supply consumers, and any excess energy is used to charge the battery. When the battery is fully charged, excess energy can be fed into the grid (if permitted).

The limit for inverter power (WGra) does not apply to the operation of the mode of changes in energy source operation.

The battery discharges to support loads when the PV output is insufficient to meet self-consumption needs. If the battery capacity is insufficient, the system draws electricity from the public grid to supply the consumers.

• PDF GoodWe Hybrid Inverter Datasheet (HV/High Voltage) ET PLUS Series
• PDF GoodWe Hybrid Inverter Operating Instructions for the ET Series
• PDF GoodWe Hybrid Inverter Installation Quick Guide ET Series
• PDF GoodWe Hybrid Inverter User Manual ET Series and ET Plus Series

GoodWe Hybrid Inverter (HV) Three-phase ET-Plus 5kW – GW5K-ET

Battery input data

Battery type: Li-ion
Battery voltage range (V): 180~600
Max. charge/discharge current (A): 25
Li-ion battery charging strategy: Self-adaptation to BMS
PV string input data
Max. DC input power (W): 6500
Max. DC input voltage (V)*1: 1000
MPPT range (V): 200~850
Start-up voltage (V): 180
Min. feed-in voltage (V)*7: 210
Full-load MPPT range (V): 240~850
Nominal input voltage (V): 620
Max. input current (A): 12.5/12.5
Max. short-circuit current (A): 15.2/15.2
Number of MPP trackers: 2
Number of strings per MPPT: 1/1

AC output data (mains-connected)

Nominal apparent power to the grid (VA): 5000
Max. apparent power to the grid (VA)*2*6: 5500
Nominal apparent power from the grid (VA): 10000
Max. apparent power from the grid (VA): 10000
Nominal output voltage (V): 400/380, 3L/N/PE
Nominal output frequency (Hz): 50/60
Max. AC current output to the grid (A): 8.5
Max. AC current from the grid (A): 15.2
Output power factor: ~1 (adjustable from 0.8 leading to 0.8 lagging)
Output THDi (at nominal power): < 3%

AC output data (backup)

Backup rated apparent power (VA): 5000
Max. output apparent power (VA): 5000
Peak output apparent power (VA)*3: 10000, 60 sec.
Max. output current (A): 8.5
Rated output voltage (V): 400/380
Rated output frequency (Hz): 50/60
Output THDv (at linear load): < 3%

efficiency

Maximum efficiency: 98.00%
Maximum battery load efficiency: 97.50%
European efficiency: 97.20%
MPPT efficiency: 99.90%

* Current certificates can be found on the GoodWe website.
*1 For a 1000 V system, the maximum operating voltage is 950 V. For Australian safety, a warning is issued if the PV voltage is > 600 V.
*2 According to local grid regulations.
*3 Can only be achieved if the PV and battery power is sufficient.
*4 CAN communication is configured by default. If 485 communication is used, please swap the corresponding communication line.
*5 No backup output.
*6 Max. output apparent power (VA) for Belgium: GW5K-ET: 5000; GW6.5K-ET: 6500; GW8K-ET: 8000; GW10K-ET: 10000.
*7 If no battery is connected, the inverter will only start feeding power into the grid when the string voltage is higher than 400 V.

GoodWe Hybrid Inverter (HV) Three-phase ET-Plus 6.5kW – GW6.5K-ET

Battery input data

Battery type: Li-ion
Battery voltage range (V): 180~600
Max. charge/discharge current (A): 25
Li-ion battery charging strategy: Self-adaptation to BMS
PV string input data
Max. DC input power (W): 8450
Max. DC input voltage (V)*1: 1000
MPPT range (V): 200~850
Start-up voltage (V): 180
Min. feed-in voltage (V)*7: 210
Full-load MPPT range (V): 310~850
Nominal input voltage (V): 620
Max. input current (A): 12.5/12.5
Max. short-circuit current (A): 15.2/15.2
Number of MPP trackers: 2
Number of strings per MPPT: 1/1

AC output data (mains-connected)

Nominal apparent power to the grid (VA): 6500
Max. apparent power to the grid (VA)*2*6: 7150
Nominal apparent power from the grid (VA): 13000
Max. apparent power from the grid (VA): 13000
Nominal output voltage (V): 400/380, 3L/N/PE
Nominal output frequency (Hz): 50/60
Max. AC current output to the grid (A): 10.8
Max. AC current from the grid (A): 19.7
Output power factor: ~1 (adjustable from 0.8 leading to 0.8 lagging)
Output THDi (at nominal power): < 3%

AC output data (backup)

Backup rated apparent power (VA): 6500
Max. output apparent power (VA): 6500
Peak output apparent power (VA)*3: 13000, 60 sec.
Max. output current (A): 10.8
Rated output voltage (V): 400/380
Rated output frequency (Hz): 50/60
Output THDv (at linear load): < 3%

efficiency

Maximum efficiency: 98.00%
Maximum battery load efficiency: 97.50%
European efficiency: 97.20%
MPPT efficiency: 99.90%

* Current certificates can be found on the GoodWe website.
*1 For a 1000 V system, the maximum operating voltage is 950 V. For Australian safety, a warning is issued if the PV voltage is > 600 V.
*2 According to local grid regulations.
*3 Can only be achieved if the PV and battery power is sufficient.
*4 CAN communication is configured by default. If 485 communication is used, please swap the corresponding communication line.
*5 No backup output.
*6 Max. output apparent power (VA) for Belgium: GW5K-ET: 5000; GW6.5K-ET: 6500; GW8K-ET: 8000; GW10K-ET: 10000.
*7 If no battery is connected, the inverter will only start feeding power into the grid when the string voltage is higher than 400 V.

GoodWe Hybrid Inverter (HV) Three-phase ET-Plus 8kW – GW8K-ET

Battery input data

Battery type: Li-ion
Battery voltage range (V): 180~600
Max. charge/discharge current (A): 25
Li-ion battery charging strategy: Self-adaptation to BMS
PV string input data
Max. DC input power (W): 9600
Max. DC input voltage (V)*1: 1000
MPPT range (V): 200~850
Start-up voltage (V): 180
Min. feed-in voltage (V)*7: 210
Full-load MPPT range (V): 380~850
Nominal input voltage (V): 620
Max. input current (A): 12.5/12.5
Max. short-circuit current (A): 15.2/15.2
Number of MPP trackers: 2
Number of strings per MPPT: 1/1

AC output data (mains-connected)

Nominal apparent power to the grid (VA): 8000
Max. apparent power to the grid (VA)*2*6: 8800
Nominal apparent power from the grid (VA): 15000
Max. apparent power from the grid (VA): 15000
Nominal output voltage (V): 400/380, 3L/N/PE
Nominal output frequency (Hz): 50/60
Max. AC current output to the grid (A): 13.5
Max. AC current from the grid (A): 22.7
Output power factor: ~1 (adjustable from 0.8 leading to 0.8 lagging)
Output THDi (at nominal power): < 3%

AC output data (backup)

Backup rated apparent power (VA): 8000
Max. output apparent power (VA): 8000
Peak output apparent power (VA)*3: 16000, 60 sec.
Max. output current (A): 8.5 13.5
Rated output voltage (V): 400/380
Rated output frequency (Hz): 50/60
Output THDv (at linear load): < 3%

efficiency

Maximum efficiency: 98.20%
Maximum battery load efficiency: 97.50%
European efficiency: 97.50%
MPPT efficiency: 99.90%

* Current certificates can be found on the GoodWe website.
*1 For a 1000 V system, the maximum operating voltage is 950 V. For Australian safety, a warning is issued if the PV voltage is > 600 V.
*2 According to local grid regulations.
*3 Can only be achieved if the PV and battery power is sufficient.
*4 CAN communication is configured by default. If 485 communication is used, please swap the corresponding communication line.
*5 No backup output.
*6 Max. output apparent power (VA) for Belgium: GW5K-ET: 5000; GW6.5K-ET: 6500; GW8K-ET: 8000; GW10K-ET: 10000.
*7 If no battery is connected, the inverter will only start feeding power into the grid when the string voltage is higher than 400 V.

GoodWe Hybrid Inverter (HV) Three-phase ET-Plus 10kW – GW10K-ET

Battery input data

Battery type: Li-ion
Battery voltage range (V): 180~600
Max. charge/discharge current (A): 25
Li-ion battery charging strategy: Self-adaptation to BMS
PV string input data
Max. DC input power (W): 13000
Max. DC input voltage (V)*1: 1000
MPPT range (V): 200~850
Start-up voltage (V): 180
Min. feed-in voltage (V)*7: 210
Full-load MPPT range (V): 460~850
Nominal input voltage (V): 620
Max. input current (A): 12.5/12.5
Max. short-circuit current (A): 15.2/15.2
Number of MPP trackers: 2
Number of strings per MPPT: 1/1

AC output data (mains-connected)

Nominal apparent power to the grid (VA): 10000
Max. apparent power to the grid (VA)*2*6: 11000
Nominal apparent power from the grid (VA): 15000
Max. apparent power from the grid (VA): 15000
Nominal output voltage (V): 400/380, 3L/N/PE
Nominal output frequency (Hz): 50/60
Max. AC current output to the grid (A): 16.5
Max. AC current from the grid (A): 22.7
Output power factor: ~1 (adjustable from 0.8 leading to 0.8 lagging)
Output THDi (at nominal power): < 3%

AC output data (backup)

Backup rated apparent power (VA): 10000
Max. output apparent power (VA): 10000
Peak output apparent power (VA)*3: 16500, 60 sec.
Max. output current (A): 16.5
Rated output voltage (V): 400/380
Rated output frequency (Hz): 50/60
Output THDv (at linear load): < 3%

efficiency

Maximum efficiency: 98.20%
Maximum battery load efficiency: 97.50%
European efficiency: 97.50%
MPPT efficiency: 99.90%

* Current certificates can be found on the GoodWe website.
*1 For a 1000 V system, the maximum operating voltage is 950 V. For Australian safety, a warning is issued if the PV voltage is > 600 V.
*2 According to local grid regulations.
*3 Can only be achieved if the PV and battery power is sufficient.
*4 CAN communication is configured by default. If 485 communication is used, please swap the corresponding communication line.
*5 No backup output.
*6 Max. output apparent power (VA) for Belgium: GW5K-ET: 5000; GW6.5K-ET: 6500; GW8K-ET: 8000; GW10K-ET: 10000.
*7 If no battery is connected, the inverter will only start feeding power into the grid when the string voltage is higher than 400 V.

Islanding protection: Integrated
PV string input reverse polarity protection: Integrated
Insulation resistance measurement: Integrated
Residual current monitoring unit: Integrated
Output overcurrent protection: Integrated
Output short circuit protection: Integrated
Reverse polarity protection at battery input: Integrated
Output overvoltage protection: Integrated

Operating temperature range (°C): -35~60
Relative humidity: 0~95%
Operating altitude (m): 4000
Cooling: Natural convection
Noise (dB): < 30
User interface: LED & APP
Communication with BMS*4: RS485; CAN
Communication with meter: RS485
Communication with EMS: RS485 (isolated)
Communication with portal: Wi-Fi
Weight (kg): 24
Dimensions (W x H x D mm): 415 x 516 x 180
Mounting: Wall mount
Protection class: IP66
Standby power consumption (W)*5: < 15
Topology: Battery non-isolated

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