Freesun HEM — central solar inverter with built-in MV transformer up to 5.5 MVA
Country: Spain · Model: Freesun HEM
The Freesun HEM central inverter delivers 4999–5498 kVA at 30 °C and feeds energy straight into a 30, 33 or 34.5 kV grid. It is designed for large solar plants and hybrid stations where the solar field works together with storage.
- Power
- 4999–5498 kVA at 30 °C (4430–4860 kVA at 50 °C)
- MV grid voltage
- 30 / 33 / 34.5 kV ±10 %
- DC voltage
- 934–1500 V
- Ingress protection
- IP55
Technical specifications
| Power | 4999–5498 kVA at 30 °C (4430–4860 kVA at 50 °C) |
|---|---|
| MV grid voltage | 30 / 33 / 34.5 kV ±10 % |
| DC voltage | 934–1500 V |
| Ingress protection | IP55 |
| Features | 36 kV MV switchgear and transformer in one enclosure, Econ mode, solar plus storage combination (Bus Plus) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The IP55 enclosure contains the inverter, the transformer and the 36 kV MV switchgear, so no separate transformer substation is needed on site. The DC input accepts 934–1500 V, which matches 1500 V class module strings. At 50 °C the rating drops to 4430–4860 kVA depending on the modification. An economical operating mode, Econ, is provided. The Bus Plus function combines solar generation and an energy storage system within one installation.
How to choose
The modification is chosen by power in the 4999–5498 kVA range and by the MV line voltage. For stations where the inverter must work on the low side at 660 / 690 V with its own substation, there is the Freesun HEMK up to 4999 kVA. The battery part of a hybrid solar plant is covered by 1200 kW Freemaq DC/DC converters or by a separate Freemaq PCSM PCS.
Request a price and lead time
Freesun HEM — central solar inverter with built-in MV transformer up to 5.5 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 HEM inverter?
From 4999 to 5498 kVA at 30 °C depending on the modification, and from 4430 to 4860 kVA at 50 °C.
Is a separate transformer needed for the Freesun HEM?
No, the transformer and the 36 kV MV switchgear are built into the enclosure. The inverter output is connected straight to the 30 / 33 / 34.5 kV ±10 % grid.
What is the DC voltage range of the Freesun HEM?
The input works from 934 to 1500 V, so the solar module strings are arranged for 1500 V systems.
Can a storage unit be connected to the Freesun HEM?
Yes, the Bus Plus function combines the solar plant and the storage, so the inverter is suitable for hybrid stations with BESS.
What protection rating does the Freesun HEM enclosure have?
IP55, the enclosure is designed for outdoor installation in the solar plant field.
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Need a price, lead time or replacement?
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