Metal Substations HEKA

HEKA Metal Compact Substations are durable IEC 62271-202 compliant compact substations built from galvanised steel, designed for dependable medium voltage to low voltage transformation. Operating from 6–36 kV on the MV side and 0.4–1 kV on the LV side, they provide a robust foundation for modern power distribution in demanding environments. Suitable for industrial sites, renewable energy projects such as solar parks and wind farms, EPC contractors and real estate developers, HEKA Metal Compact Substations support efficient deployment and long-term performance. The range is available in indoor and outdoor configurations, making it easier to match the right setup to site conditions, technical requirements and project scope.

Feel free to ask from our specialist:

Heigo Pikkor

Sales Manager | Compact substations and medium-voltage switchgear (Estonia)

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Rait Kangro

Head of Sales and Marketing

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HEKA M CSS units are manufactured from galvanized sheet steel with a thickness of 1.5–3 mm, ensuring exceptional durability and resistance to challenging environmental conditions. Designed to transform voltages from 6–36 kV down to 0.4–1 kV, they offer versatile solutions for a wide range of electrical distribution applications.

Delivered as fully integrated turnkey systems, HEKA M CSS is engineered to meet the requirements of diverse end users. While utility companies remain the primary customers, these substations are also widely adopted by organizations seeking new or expanded medium-voltage grid connections.

Typical applications include:

Industrial facilities such as manufacturing plants and logistics centers
Renewable energy projects, including solar parks and battery energy storage systems (BESS)
EPC firms managing large-scale infrastructure projects
Real estate developers building residential or commercial zones requiring grid access
Electrical wholesalers seeking standardized, reliable solutions

Configurations available:

Outdoor substations: Delivered as a single unit, operated externally
Indoor substations: Operated from within the enclosure, consisting of two elements—the enclosure and a cable cellar installed beneath it

Most HEKA M CSS products are type-tested in accordance with IEC 62271-202, ensuring compliance with international standards and dependable performance in diverse operating environments.

High Durability & Compliance

Built from galvanised steel sheets (1.5–3 mm), HEKA Metal Compact Substations are made to handle harsh weather and demanding sites with confidence. HEKA M substations are type-tested according to IEC 62271-202, supporting consistent quality, safety and best performance for critical power distribution infrastructure.

Versatile Voltage Transformation

Designed for medium voltage to low voltage conversion, HEKA M CSS transforms 6–36 kV to 0.4–1 kV, making it a flexible choice for many applications. From industrial facilities and logistics centres to renewable energy projects such as solar parks and battery energy storage systems (BESS), these compact substations support safe, efficient power distribution for new connections and network expansions.

Turnkey, Flexible Configurations

HEKA M CSS is delivered as a fully integrated turnkey compact substation, helping simplify installation and reduce project timelines. Configurations include outdoor substations delivered as single units and indoor solutions with separate enclosure and cable cellar, allowing utilities, EPC companies and real estate developers to select the setup that best fits site conditions and project requirements.