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.
| 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) |
| 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 |
| Max Efficiency | 98.8% |
| 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 |
| 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 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 |
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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