SMA STRING-COMBINER

Product catalog summary

Overview: The document provides technical specifications and features of the SMA String-Combiner, designed for safe collection of all strings in photovoltaic (PV) fields. It highlights the product's ease of installation, versatility, and robust construction.

Specifications: The SMA String-Combiner is available for both 1000 VDC and 1500 VDC systems, with models supporting 16, 24, or 32 string inputs. It operates at ambient temperatures from -25°C to 60°C and altitudes up to 4000 meters above mean sea level (MSL). The enclosure is made of glass-fiber-reinforced polyester, providing IP54 protection, suitable for indoor and outdoor installations.

Technical Data for 1000 VDC Systems:

Rated voltage: 1000 V
Rated current: 13.75 A to 12.5 A depending on the model
DC switch: 250 A / 1000 V to 400 A / 1000 V
Surge arrester: Type 2, In = 15 kA; Imax = 40 kA
Dimensions and weight vary by model, with the largest model weighing 34 kg

Technical Data for 1500 VDC Systems:

Rated voltage: 1500 V
Rated current: 17.2 A to 10.31 A depending on the model
DC switch: 400 A / 1500 V
Surge arrester: Type 2, In = 15 kA; Imax = 40 kA
Dimensions and weight vary by model, with the largest model weighing 40 kg

Compliance and Standards: The product complies with CE, IEC 61439-1, and IEC 61439-2 standards. It is designed for easy installation with a compact structure and low weight, featuring an integrated DC load-break switch for enhanced safety.

Additional Notes: The document mentions that all products and services, as well as technical data, are subject to change without notice, and SMA assumes no liability for typographical or other errors.

Catalog excerpts

• table housing made of glass-fiberS reinforced polyester • ndoor and outdoor installation I possible thanks to IP54 degree of protection • an be operated at ambient C temperatures of −25°C to 60°C and at altitudes of up to 4000 m above MSL • asy to install thanks to its compact E structure and low weight • ntegrated DC load-break switch I for ultra-high safety • or PV array voltages of 1000 V F and 1500 V • ollection and safeguarding of 16, C 24 or 32 strings for flexibility during the system design phase For safe collection of all strings in the PV field The boxes can be installed quickly, safely and easily both indoors and outdoors thanks to their compact dimensions, while their robust enclosure guarantees durability and reliable safety in the PV field. The SMA String-Combiners with 24 and 32 string inlets are fitted with two cable outlets per pole as standard and cover – just like the Combiner with 16 string inlets – a sealing range of 17 to 38.5 millimeters. Cables with cross-sections of 70 to 400 m

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Technical Data Input (DC) Rated voltage Altitude derating (rated voltage) Number of string inputs / fuse holders per pole Rated current Fuse type* String connection Sealing range of cable gland Output (DC) Rated current Temperature derating (rated current) DC switch (load-break switch) Surge arrester DC output Number of DC outputs Conductor cross-section Sealing range of cable glands Enclosure / Ambient Parameters IP degree of protection according to IEC 60529 2001 m to 3000 m above MSL = reduction by 1.0% per 100 m 3001 m to 4000 m above MSL = reduction by 1.2% per 100 m 16 24 32 >50°C...

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DC-CMB-U-DEN1629-V15 SMA and Sunny Central are registered trademarks of SMA Solar Technology AG. Printed on FSC paper. All products and services described as well as technical data are subject to change, even for reasons of country-specific deviations, at any time without notice. SMA assumes no liability for typographical or other errors. For the latest information, please visit SMA-Solar.com.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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