Renewable plants run the transformer in reverse: power flows from the inverters up to the grid. That changes the design, not just the rating.
• Step-up • 400–800 V inverter side • Bidirectional • Evacuation substations
Energy flows from LV to MV, continuously, whenever the sun shines or the wind blows. The design has to be genuinely bidirectional — not a distribution unit used backwards.
String and central inverters output anywhere from 400 to 800 V. The LV winding is matched to the actual inverter, not to a catalogue default.
Pairing one transformer with two inverter blocks is common and economical — it has to be designed in from the start.
Beyond a certain plant size, the connection point becomes an MV or HV substation — which we build as a complete package.
| Parameter | Our approach |
|---|---|
| Power flow | Bidirectional by design, declared at specification |
| LV voltage | 400 – 800 V, matched to your inverter |
| Windings | Single or double secondary, per inverter architecture |
| K-factor | Adapted to the inverter harmonic spectrum |
| Scope | Step-up transformer alone, or full evacuation substation |
| Delivered lead time | 15 to 18 weeks — production + shipping |
Indicative approach — the final specification follows your requirement, confirmed at quotation.
Oil-immersed →BESS storage →MV substation →
Physically it will transform, but the design assumptions differ: continuous reverse flow, inverter harmonics and the duty cycle of a plant are not what a distribution unit is dimensioned for. Specify it as a step-up from the outset.
Whatever your inverter actually outputs — 400, 690 or 800 V are all common. Send the inverter datasheet with your request and we match it.
Yes — from the step-up transformer alone to a complete MV substation, or an HV substation on a study basis for larger plants.
Send the inverter reference and plant layout — first reply within 48 h.
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