Freesun HEMK — central solar inverter up to 5 MVA
Country: Spain · Model: Freesun HEMK
The Freesun HEMK is a 1500 V class central solar inverter with a power of up to 4999 kVA at 30–35 °C. The low-voltage 660 / 690 V output makes it the basic converter for large solar plants where the transformer station is installed separately.
- Power
- up to 4999 kVA at 30–35 °C, 4430 kVA at 50 °C
- Grid voltage
- 660 / 690 V ±10 %
- DC voltage
- 934–1500 V
- Max. efficiency
- 98.95 %
Technical specifications
| Power | up to 4999 kVA at 30–35 °C, 4430 kVA at 50 °C |
|---|---|
| Grid voltage | 660 / 690 V ±10 % |
| DC voltage | 934–1500 V |
| Max. efficiency | 98.95 % |
| Euro efficiency | 98.53 % |
| Dimensions | 3.0 × 2.0 × 2.3 m |
| Topology | multilevel |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The input accepts 934–1500 V, and the multilevel topology reduces losses in the power switches and ripple at the output. The maximum efficiency is 98.95 % and the European efficiency 98.53 %, so the inverter keeps a high yield even at partial loads in the morning and evening. At 50 °C the rating is 4430 kVA. The cabinet measures 3.0 × 2.0 × 2.3 m. Up to 4 DC/DC converters can be connected to the inverter, and it then becomes the basis of a hybrid station with storage on the DC bus.
How to choose
The choice between the HEMK and the HEM depends on who supplies the transformer. The HEMK delivers 660 / 690 V ±10 % and works with a separate MV station, while the Freesun HEM has a built-in transformer and switchgear for 30 / 33 / 34.5 kV at a power of 4999–5498 kVA. For storage on the DC bus, Freemaq DC/DC converters of 1200 kW each are added to the HEMK, and a stand-alone BESS is built on the Freemaq PCSK battery inverter in the same 3.0 × 2.0 × 2.3 m enclosure.
Request a price and lead time
Freesun HEMK — central solar inverter up to 5 MVA, Power Electronics. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the power of the Freesun HEMK?
Up to 4999 kVA at a temperature of 30–35 °C, and at 50 °C the rating drops to 4430 kVA.
What is the European efficiency of the Freesun HEMK solar inverter?
The European efficiency is 98.53 %, and the maximum is 98.95 %.
How many DC/DC converters can be connected to the HEMK?
Up to 4 DC/DC converters for storage, so an ordinary solar plant becomes hybrid without a separate battery inverter.
What grid voltage is the Freesun HEMK output rated for?
The output is 660 / 690 V ±10 %, so a separate transformer station is needed for connection to the MV grid.
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