m. Сміла, Незалежності, 67г. оф, 406/6
GoodWe SCU3000A-S - plant-level controller for large solar plants.
Description GoodWe SCU3000A-S
GoodWe SCU3000A-S is a plant-level communication controller in the 'A-S' variant. A cabinet of 723 × 780 × 226 mm weighing 28 kg, with an operating temperature from −30 to +60 °C. The device is intended for grid-connected solar plants, where equipment behaviour is governed not only by your preferences but by the terms of the operator agreement.
The grid imposes requirements an inverter cannot meet alone
A domestic installation lives by a simple rule: generate what you can, export the surplus or curtail it. An industrial grid-connected plant works to different logic — it is a participant in the power system, and requirements are placed upon it.
The most common are limiting output to a set value and the ability to regulate power remotely on a dispatcher's command. No inverter can meet such a requirement on its own: it does not know the plant's total output and has no channel for receiving external commands. That is the controller's task.
How it works in practice
The controller receives a setpoint — for example, 'no more than 70% of rated power' or a specific figure in kilowatts. It then distributes that constraint among all the plant's inverters, monitors total output and adjusts the assignment in real time.
An important nuance: the distribution is not a simple equal split. Inverters operate under different conditions — part of the array is shaded, part has overheated, somewhere the panels are soiled. The controller accounts for each device's actual capability so the plant delivers the maximum within what is permitted, rather than losing generation to a crude allocation.
What this means for the owner
compliance with connection terms — some requirements are technically impossible to meet without a controller;
no penalty situations for exceeding permitted output;
documented confirmation of operation within limits — the readings archive;
eligibility for schemes that involve remote control by the operator.
Built for an industrial site
An operating range from −30 to +60 °C allows the equipment to be installed outdoors. For a plant sited in a field that removes the need to build a technical block — an expense which at the design stage often exceeds the cost of the controller itself.
Dimensions of 723 × 780 mm at a depth of 226 mm and a mass of 28 kg require a solid base for mounting. Space for the cabinet and cable routes from the inverters are designed in together: running communication lines across an already-built plant is always more expensive and slower.
What to establish before ordering
Variants in the SCU3000 family are outwardly indistinguishable, so the choice is made from the manufacturer's technical documentation. Clarify the connected device limit, the communication protocols supported, and compatibility with the inverter series installed at your site.
Separately, take out the technical connection conditions and see exactly what the network operator requires: the volume of telemetry to be transmitted, the exchange format, and whether remote control is necessary. These requirements determine not only the controller choice but also the communication channel you will have to provide.
Send us the technical connection conditions and the plant's composition — we will work out which requirements must be met technically and select a configuration that will pass acceptance without remarks.
Characteristics GoodWe SCU3000A-S
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