Freemaq PCSK / Multi PCSK — battery inverter (PCS) up to 5.36 MVA
Country: Spain · Model: Freemaq PCSK / Multi PCSK
The Freemaq PCSK is a low-voltage bidirectional battery inverter (PCS) rated 5360 kVA at 30 °C and 4520 kVA at 50 °C. It is installed in large BESS and data centers where the battery array operates at 1019–1500 V.
- Power
- up to 5360 kVA at 30 °C, 4520 kVA at 50 °C
- Grid voltage
- 690 / 720 V ±10 %
- Battery voltage
- 1019–1500 V
- Max. efficiency
- 98.94 %
Technical specifications
| Power | up to 5360 kVA at 30 °C, 4520 kVA at 50 °C |
|---|---|
| Grid voltage | 690 / 720 V ±10 % |
| Battery voltage | 1019–1500 V |
| Max. efficiency | 98.94 % |
| Dimensions | 3.0 × 2.0 × 2.3 m |
| DC inputs | 1 or up to 4 (Multi PCSK) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The converter is modular and energy flows in both directions, so a single cabinet both charges the battery from the grid and returns the stored energy. The AC output is rated for 690 or 720 V ±10 %, so the inverter is connected to the MV grid through an external MV Skid transformer station. The maximum efficiency is 98.94 %, so the losses in the converter itself stay at about one percent of the power. The enclosure measures 3.0 × 2.0 × 2.3 m and is installed on a prepared foundation next to the battery containers. The base version accepts one DC input. The Multi PCSK variant has up to 4 inputs, which simplifies work with several battery strings at different states of charge.
How to choose
The main question when choosing is where the transformer will be. If a MV Skid station is already on site or is ordered separately, the PCSK is used. When a ready unit with a built-in transformer and switchgear for 30 / 33 / 34.5 kV is needed, the Freemaq PCSM with the same power of up to 5360 kVA is suitable. To store the energy that a solar inverter clips, without a separate PCS, the 1200 kW Freemaq DC/DC converter is used.
Request a price and lead time
Freemaq PCSK / Multi PCSK — battery inverter (PCS) up to 5.36 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 Freemaq PCSK at high temperature?
At 30 °C the inverter delivers up to 5360 kVA, and at 50 °C the rating drops to 4520 kVA. For southern sites the BESS calculation is based on the second value.
What battery voltage does the PCSK support?
The DC range is 1019–1500 V, so the battery racks are assembled for 1500 V class systems.
How does the Multi PCSK differ from the standard PCSK?
The standard version has one DC input, while the Multi PCSK accepts up to 4 inputs. This way several battery units are connected to one inverter.
Is a separate transformer needed for the PCSK?
Yes, the inverter output is 690 / 720 V ±10 %, so for the MV grid it is connected to an external MV Skid station.
What is the efficiency of the Freemaq PCSK battery inverter?
The manufacturer states a maximum efficiency of 98.94 %. The losses in the MV Skid transformer are not included in this value and are calculated separately.
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