Function

SUNSYS HES L is a modular outdoor energy storage system designed for both on-grid and off-grid applications. It is available in a variety of configurations, to provide the ideal system size for a range of project requirements. 
It supports dedicated applications including optimization of photovoltaic self-consumption, peak-shaving, backup power, and EV charging infrastructure.
SUNSYS HES L combines the economic returns of on-grid operation with the security of a microgrid when the grid may fail.

Conformity to standards

Safety: UL9540-2023; UL9540A; NFPA855; NFPA68
EMC: FCC part 15 Level A
Environment: RoHS; REACH
Communication protocol: Modbus TCP; SunSpec 2.0
Grid code: UL1741 SB; UL1741 PCS CRD; IEEE1547-2018; IEEE1547.1-2020; CA Rule 21; HECO Rule 14h
CEC listed
Please consult us for additional ones.

Advantages

High safety standards

SUNSYS HES L integrates advanced power conversion and LFP battery technologies to create a winning formula.
The B-Cab L (Battery Cabinet) uses liquidcooled thermal management, with an integrated fire safety system, and meets the requirements of the latest international fire code.
The complete system is certified to the latest UL9540, the safety standard for energy storage systems in both the Canada and the USA.

Extreme modularity

Based on 2 standard cabinets, SUNSYS HES L enables more than 30 U certified configurations, providing ideal sizing for a variety of projects. Standard configurations simplify the design, quotation, installation and commissioning of your projects.

Fast and safe installation

SUNSYS HES L is supplied with all internal energy modules pre-assembled and plug-and-play power modules to guarantee maximum quality, the optimisation of installation time and ease of transport. It includes all cables and hardware to connect the batteries (B-Cab) and the PCS (C-Cab) including cable kits for DC power, auxiliary power and communication connections.

Combines the best technologies

Thanks to a co-design between CATL and Socomec, you can be assured of compatibility between products, and that the complete system has been validated and certified. The PCS (C-Cab) has been designed to include everything required for battery operation, including the management system as well as the power supply.

Enhanced Control, Faster Deployment, Safer Operation

EC‑Cab brings integrated control to SUNSYS HES BESS with a standardized, pre‑engineered architecture. By replacing custom control builds, EC‑Cab significantly reduces engineering & procurement efforts, costs, and lead times. EC‑Cab is EMS‑ready and supports EMS‑agnostic connectivity, enabling seamless monitoring and control with third‑party platforms.

Applications

  • Data center - Power availability for servers
  • Energy - Energy storage for grid services
  • Infrastructure & Transport - Power for EV charging
  • Industry - Power availability for industrial process
  • Building - Energy storage behind the meter

Technical data

System information
Power modularity50 kVA power modules - up to 550 kVA
Symmetrical overload110% during 60 min - 125% during 20 min - 150% during 60 s
ChemistryLFP - Lithium Iron Phosphate
Energy Nameplate204 kWh per rack
AC/AC Max Round Trip Efficiency90%
Maximum P-rate0.5 P
Maximum DC current82 A charging / 87 A discharging per 50 kVA power module
Power rating (kVA)50100150200250300350400450500550
AC rated current (A)60120180241301361 421481541602662
AC max temporary current (overload) (A)90180271361451541631721811902992
(overload) AC connectionsPer C-Cab L: Up to 4x95mm²/3/0AWG - 3x150mm²/300MCM - 2x185mm²/350MCM
Rated voltage (Un)480 Vac (3ph+N) ±20%
Rated frequency60 Hz ±5 Hz
Fire protectionFire Safety System including smoke detectors, heat detectors, aerosol, deflagration panel and dry pire
Environment
Degree of protectionIP 55 / NEMA 3R (Outdoor)
Operation temperature-20 to +45 C° / -4 to +113°F without derating - up to +50°C / 122°F with derating
Storage temperature-20°C to +60°C / -4°F to +140°F
Acoustic level at 1 m< 64.8 dB
Maximum altitude1000 m / 3280 ft. without derating (consult us for requirements above this)

 

Live demonstration

Video URL

Installation

Video URL

Associated services

Extended warranty

for energy storage system SUNSYS HES

Preventive maintenance

for energy storage system SUNSYS HES

Socomec services

Socomec offers comprehensive support to optimize the performance and longevity of your equipment. 400 experts and 250 engineers are mobilized to offer a complete service, from commissioning to end-of-life management of your equipment.

Maintenance

Benefit from Socomec experts available on-site and remotely to guarantee the performance of your equipment and optimize its life cycle.

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Extended warranty SUNSYS HES

Guarantee optimal protection and continuous performance of your BESS for up to 20 years.

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Preventive maintenance SUNSYS HES

Keep your energy storage system at peak efficiency.

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Documentation

  • PDF
    SUNSYS Energy Storage solutions - Cutting edge technologies to meet your requirements
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  • PDF
    SUNSYS HES L - UL1741
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  • PDF
    Extended warranty for SUNSYS HES energy storage systems
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  • PDF
    Preventive maintenance for energy storage systems SUNSYS HES L and SUNSYS HES XXL
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  • PDF
    SUNSYS HES L© Modular outdoor energy storage system
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  • PDF
    SUNSYS HES L - UL 9540 Certificate
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  • PDF
    SUNSYS HES L USER MANUAL UL
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