Battery module – SMA – ESSX-EXT-50-20 – HV
SKU: ESSX-EXT-50-20
Product details
Commercial Storage Solution
The Commercial Storage Solution by SMA is an integrated energy storage system for businesses, using Samsung SDI NMC lithium-ion cells. It enables increased self-consumption and peak load reduction, including by combining operating modes. The modular design allows the system to be expanded and used with or without a photovoltaic installation.
Key benefits of Commercial Storage Solution
- Rated AC power 30–50 kW and initial capacity 32–56 kWh at 100% depth of discharge, depending on the variant.
- Modular capacity expansion: 8 kWh modules can be added within 6 months of commissioning, reaching up to 48–80 kWh, depending on the variant. The maximum capacity after system expansion is 192–320 kWh, respectively.
- Intelligent energy management: self-consumption optimization, peak shaving and combining operating modes help reduce energy costs for businesses.
- Battery efficiency up to 98% and prismatic NMC lithium-ion cells with the DynamiX Battery Optimizer balancing system.
- Free monitoring via Sunny Portal powered by ennexOS and remote parameter configuration of SMA devices.
- 10-year warranty on the system upon registration with SMA and a 10-year battery capacity warranty, in accordance with SMA warranty terms.
Who is this a good choice for?
This solution is designed for companies with photovoltaic systems that want to increase self-consumption and reduce peak loads, as well as businesses without PV installations that need load management. Expandable power and capacity allow the system to adapt to the company’s needs, while free monitoring makes it easier to oversee its operation.
| Parameter | ESSX-30-20 | ESSX-50-20 |
|---|---|---|
| Inverter – DC input specifications | ||
| Inverter model | STPS30-20 | STPS50-20 |
| Maximum DC power (W) | 30600 | 51000 |
| DC voltage range (V) | 200 to 980 | |
| Maximum usable input current (A) | 150 | |
| Battery type | Lithium-ion | |
| Inverter – AC output data | ||
| Rated power at nominal voltage (W) | 30000 | 50000 |
| Maximum AC apparent power (VA) | 30000 | 50000 |
| Maximum reactive power (var) | 30000 | 50000 |
| Nominal AC voltage (V) | 400, ±15% | |
| AC voltage range (V) | 340 to 477 | |
| Nominal grid frequency (Hz) | 50 / 60 | |
| Grid frequency range (Hz) | 44 to 66 | |
| Maximum output current per phase conductor (A) | 45,6 | 75,5 |
| Power factor at rated power | 1 | |
| Phase displacement factor adjustment range | 0 at overexcitation to 0 at underexcitation | |
| Phase conductors supplying energy / connection cables | 3 (L1, L2, L3) / 5 (L1, L2, L3, N, PE) | |
| Inverter – efficiency | ||
| Maximum efficiency (%) | 98,0 | |
| European efficiency (%) | 97,6 | 97,2 |
| Inverter – protection features | ||
| Network monitoring | Yes | |
| Protection against overheating and deep battery discharge | Yes | |
| Ability to operate during an AC short circuit | Yes | |
| Galvanic isolation | No | |
| Residual current monitoring sensitive to all current types | Yes | |
| Protection class according to IEC 62109-1 | And | |
| Overvoltage category according to IEC 60664-1 | DC: II, AC: III | |
| Surge arrester according to IEC 61643-11 | AC: type 2 / class II | |
| Inverter – dimensions and weight | ||
| Dimensions width / height / depth (mm) | 608 / 1400 / 990 | 608 / 2008 / 990 |
| Weight (kg) | 104 | |
| Inverter – operating conditions | ||
| Operating temperature (°C) | 0 to 50 | |
| Typical noise level (dB(A)) | 69 | |
| Standby power consumption (W) | 25 | |
| Topology | Three-phase | |
| Cooling | Passive through ventilation openings and active using a fan | |
| Degree of protection according to IEC 60529 / UL 50E | IP65 / NEMA 4X | |
| Climatic category according to IEC 60721-3-4 | 4K4 / 4Z4 / 4S2 / 4M3 / 4C2 / 4B2 | |
| Maximum relative humidity without condensation (%) | 95 | |
| Inverter – connections, communication and functions | ||
| DC connection and cable cross-section (mm²) | Cable lug, 50 to 95 | |
| AC connection and cable cross-section (mm²) | Screw terminal, 16 to 95 | |
| Communication and protocols | Modbus (SMA, Sunspec), SMA Speedwire, Webconnect | |
| Status / error / communication LED indicators | Yes / Yes / Yes | |
| Energy management functions | Self-consumption optimization, peak demand reduction, combining operating modes | |
| Browser-based user interface | Yes | |
| Wi-Fi | Yes, only for commissioning | |
| Integration with systems using external inverters | Sunny Portal powered by ennexOS | |
| System monitoring | Ethernet (Modbus) | |
| Battery bus interface | In preparation | |
| Backup power | ||
| System management | ||
| Number of supported devices when managed via Sunny Tripower Storage | 10 | |
| Number of supported devices when managed via SMA Data Manager M (EDMM-20) | 50 | |
| Centralized commissioning of all system devices | Yes | |
| Remote configuration of SMA devices via Sunny Portal powered by ennexOS | Yes | |
| Battery – electrical specifications | ||
| Battery model | Storage-30-20 | Storage-50-20 |
| Energy at 100% depth of discharge (kWh) | 32 | 56 |
| Energy of a single expansion module (kWh) | 8 | |
| Expansion possible within 6 months of commissioning (kWh) | up to 48 | up to 80 |
| Maximum energy after system expansion (kWh) | 192 | 320 |
| Nominal voltage (V) | 324 | 567 |
| Minimum operating voltage (V) | 290 | 508 |
| Maximum operating voltage (V) | 365 | 639 |
| Rated charging / discharging current (A) | 100 | |
| Maximum charging and discharging rate | 1C (in combination with STPS30-20) | 1C (in combination with STPS50-20) |
| Cell type | Lithium NMC, prismatic (Samsung SDI) | |
| Cell balancing | DynamiX Battery Optimizer | |
| Standby power consumption without inverter (W) | 5 | |
| Battery efficiency (%) | Up to 98 | |
| Battery – cycle life | ||
| Expected number of cycles at 1C/1C, 100% DoD, 70% EoL and 23°C ±5°C | 6000 | |
| Expected number of cycles at 0.5C/0.5C, 100% DoD, 70% EoL and 23°C ±5°C | 8000 | |
| Guaranteed number of cycles at 1C/1C, 100% DoD, 70% EoL and 23°C ±5°C | 4500 | |
| Guaranteed number of cycles at 0.5C/0.5C, 100% DoD, 70% EoL and 23°C ±5°C | 6000 | |
| Battery – dimensions and weight | ||
| Dimensions width / height / depth (mm) | 608 / 1400 / 990 | 608 / 2008 / 990 |
| Total weight (kg) | 356 | 555 |
| Cabinet weight (kg) | 119 | 150 |
| Battery module weight (kg) | 56 | |
| APU battery management system weight (kg) | 13 | |
| Battery – operating conditions | ||
| Operating temperature (°C) | 0 to 50 | |
| Ambient temperature (°C) | 0 to 50 | |
| Non-condensing humidity (%) | 0 to 80 | |
| Cooling | Passive through ventilation openings and active using a fan | |
| Installation altitude (m above sea level) | < 2000 | |
| Degree of protection / protection class | IP20 / I | |
| Battery – certifications and standards | ||
| Cell certifications and standards | IEC 62619, UL 1642, UN 38.3 | |
| Product certifications and standards | CE, UN 38.3, IEC 62619, IEC 62620, IEC 61010-1, IEC 61508, IEC 61000-6-2/4/7, 2006/66/EC (Battery Directive) | |
| Battery designation according to DIN EN 62620:2015 | INP46/175/127/[1P22S]M/-20+60/90 | |
| Energy meters – standard equipment | ||
| SMA Commercial Energy Meter 600 A | ||
| Current transformers (A) | 3 x 200 | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Meter dimensions (mm) | 107.5 x 90 x 82 | |
| Meter weight (kg) | 0,35 | |
| Current transformer dimensions width / height / depth (mm) | 23 x 40 x 26 | |
| Weight of one current transformer (g) | 250 | |
| Current transformer opening diameter (mm) | — | |
| Total weight of the measuring set (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
| Energy meters – optional SMA Commercial Energy Meter 200 A | ||
| Current transformers (A) | 3 x 200 | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Meter dimensions (mm) | 107.5 x 90 x 82 | |
| Meter weight (kg) | 0,35 | |
| Current transformer dimensions width / height / depth (mm) | 23 x 40 x 26 | |
| Weight of one current transformer (g) | 250 | |
| Current transformer opening diameter (mm) | — | |
| Total weight of the measuring set (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
| Energy meters – optional UMG 604 E power quality analyzer | ||
| Current transformer | Not included in the scope of delivery | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Meter dimensions (mm) | 107.5 x 90 x 82 | |
| Meter weight (kg) | 0,35 | |
| Transformer dimensions width / height / depth | Not included in the scope of delivery | |
| Weight of one current transformer (kg) | 0,35 | |
| Current transformer opening diameter (mm) | — | |
| Total weight of the measuring set (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
| Warranty | ||
| Product warranty (years) | 10 | |
Inverter data is given for rated conditions. Supported devices: SMA EV Charger Business, PV inverters, Sunny Tripower Storage and SMA Commercial Energy Meter. The standard meter has a range of up to 600 A; other meters are available as ordering options.
Official distribution
