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SMA Solar Technology · Forced air (OptiCool) · Central PCS, 1500V

Utility-scale central battery inverter available in four power ratings from 3,450 to 3,960 kW at 1500V DC. Air-cooled using SMA's OptiCool system with IP54-rated electronics, designed for outdoor deployment across all climate zones. Supports grid-forming operation, dynamic grid support, and integrates a built-in auxiliary supply transformer.

3,450–3,960 kW

Power Rating

98.8%

Max Efficiency

1,500V

Max DC Voltage

IP54

IP Rating

Download Datasheet (PDF)

Specifications

DC Parameters

Operating DC Voltage Range	880–1,500V (SCS 3450) to 1,003–1,500V (SCS 3950)
Max DC Current	4,750 A
Max DC Short-Circuit Current	> 500 kA
DC Connection	Terminal lug, fused single busbar (22 connections per pole)

AC Parameters

Nominal AC Power (1200 Vdc, cos φ=1, 25°C)	3,450 / 3,620 / 3,800 / 3,960 kW
Max AC Current (25°C / 40°C / 50°C)	3,320 / 3,020 / 2,820 A
Nominal AC Voltage	600 / 630 / 660 / 690 V
AC Frequency	50 Hz (47–53 Hz) / 60 Hz (57–63 Hz)
Max THD	< 3% at nominal power
Power Factor	0.0 overexcited to 0.0 underexcited
Min Short-Circuit Ratio	> 2

Efficiency

Max Efficiency

98.8%

Protection

DC Disconnection	DC load break switch
AC Disconnection	AC circuit breaker
DC Overvoltage Protection	Surge arrester, Type I
Lightning Protection	Level III (IEC 62305-1)
Insulation Monitoring	Yes

General

Dimensions (W x H x D)	2,815 x 2,318 x 1,588 mm
Weight	< 3,700 kg
Internal Auxiliary Supply	8.4 kVA transformer
Sound Power (rated / with Silencer Kit)	93 dB(A) / 87 dB(A)
Operating Temperature	−25°C to +60°C (optional −40°C)
Max Altitude	1,000 m (2,000 m optional)
Communication	Ethernet, Modbus Master, Modbus Slave

Grid Functions

Grid Forming	Optional
Current Boost	Optional
Black Start	Optional
Static Grid Support	Q(U), P(f)
Dynamic Grid Support	FRT (Fault Ride Through)
Active Islanding Detection	Yes

Key Features

Four power ratings (3,450–3,960 kW) sharing the same physical enclosure
OptiCool intelligent air cooling for all global climate zones from −40°C to +60°C
Optional grid-forming, current boost, and black start capabilities
Compact footprint allows up to four inverters per standard shipping container
Built-in 8.4 kVA auxiliary transformer with optional 2.5 kVA supply for external loads
Optional Silencer Kit reduces noise by more than 6 dB(A)
Full four-quadrant reactive power capability

Product Certifications

IEC 62109-1 IEC 62109-2 AR-N 4110 AR-N 4120

Environmental Compliance

CE IEC 61000-6-2 EN 55011 CISPR 11 FCC Part 15 Class A

About the Manufacturer

SMA Solar Technology

Niestetal, Germany · Founded 1981

SMA Solar Technology AG, founded in 1981 and headquartered in Niestetal, Germany, is one of the world's leading manufacturers of solar inverters and energy storage power conversion systems. The company offers dedicated utility-scale and commercial BESS PCS solutions known for ...

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