Substation for photovoltaic applications with string inverters

Step-up substation for photovoltaic power plants up to 3150 KVA to 36 KV “Step-up station”.

Technical description

This substation for photovoltaic applications with string inverters is designed for medium power photovoltaic plants to increase voltage. It is recommended for plants below 20 MWc with string inverters.
It consists of an aluminium enclosure or container for easy installation on photovoltaic fields that are often difficult to access.

The substation for photovoltaic applications with HELIOS SSI string inverters can integrate:

  • One low-loss LV/HV step-up transformer up to 3150 KVA to 36 kV ECO DESIGN 2021 for optimal solar production efficiency
  • One state-of-the-art, compact, maintenance-free and hermetically tight SIEMENS MV switchgear type 8DJH 24 kV – 36 kV 630 A in compliance with IEC 62271
  • One IP2X protected low voltage panel board with circuit breakers or fuses to protect string inverters up to 800 V
  • One LV/LV dry-type transformer for auxiliary power supply
  • One C13-100 box to power the control, motorisation and supervision equipment in the event of a power cut
  • 29 mm2 grounding circuit with grounding plate
  • A set of safety accessories up to 36 kV

Key points

  • “Plug and Power” Mounted – Wired
  • Photovoltaic application “OFF GRID” and “ON GRID”
  • High transformer efficiency according to EU 548/2014 – ECO DESIGN 2021
  • Rock wool roof insulation to reduce the effects of the sun and optional sun shield
  • Insensitive to the environment
  • Short lead time of 10 to 12 weeks on average

Logistical information

  • Incoterms: FCA France or CIF seaport
  • Marine equipment required: Open Top
  • Container
  • Origin : France
  • Customs code: 85372091

Read more


Safety standards & certifications


    on high voltage electrical installations


    on low-voltage electrical installations

    NE EN 62271-202

    on MV/LV prefabricated substations


    for quality management

Interested in this product ?

Request an estimate, we will get back to you quickly.

Request an estimate
Trust us with your project

We offer you tailor-made technical and logistical expertise.

Our turnkey solutions
A question ?

Need advice, information on our solutions ?

Contact us