m. Сміла, Незалежності, 67г. оф, 406/6
GoodWe SEC3000C (4G) - plant communication controller with 4G, 100–480 V.
Description GoodWe SEC3000C (4G)
GoodWe SEC3000C (4G) is a communication controller for solar plants with a built-in cellular module. It is the version of the SEC3000C in which the data channel question is answered inside the device and requires no separate infrastructure. Metal housing 450 × 400 × 242 mm, mass 16.9 kg, supply 100–480 V, operating temperature from −30 to +60 °C.
Why 4G often turns out to be the only option
Ground-mounted solar plants are built where there is land and sunlight, not where there is telecommunications infrastructure. A field beyond a village, a plot beside a motorway, the roof of a production block on an industrial estate — in all these places wired internet is either absent or costs as much to lay as part of the plant itself.
A built-in modem settles the matter with a single decision: a SIM card is all that is required. No trench for fibre, no radio bridge, no negotiating with neighbours over a connection. The plant comes online immediately after installation.
What constant connectivity delivers
A commercial plant without a communication channel is equipment running blind. You cannot see output, you do not notice performance dropping on individual strings, and you learn about an emergency shutdown when somebody happens to visit the site.
With constant connectivity the picture changes. Data from every inverter arrives continuously, and faults are recorded as they occur rather than weeks later. For a plant that pays for itself in generated kilowatt-hours, every day of downtime is a direct loss — so response speed has an entirely monetary dimension.
Dispatch control
The second reason a communication channel can be mandatory is the network operator's requirements. For grid-connected plants, provision is often made for remote power curtailment on the operator's command.
Meeting such a requirement without stable connectivity is impossible. A controller with a built-in modem closes this question at the design stage rather than at the last moment before commissioning, when it emerges that a channel has to be found from somewhere.
Built for work in the field
a metal housing resistant to ultraviolet and frost, unlike plastic;
an operating range from −30 to +60 °C — year-round use without heating;
a wide 100–480 V supply: works from single-phase and line voltage alike;
16.9 kg and dimensions of 450 × 400 × 242 mm — mounting on a technical block wall or a structural support.
What to think about in advance
Cellular communication depends on coverage. Before installation, check the signal level at the exact point where the controller will stand — inside a metal enclosure or behind a concrete wall it may be markedly worse than in the open ten metres away. Where necessary the issue is solved with an external antenna.
The second point is the SIM card's tariff plan. The volume of telemetry is small, but the connection must be uninterrupted, so choose a plan whose terms do not suspend service after a long absence of voice traffic.
Tell us about your site — how many inverters, whether internet is available on location, and what the network operator requires. We will advise whether the modem version is genuinely needed or a standard one will do, and what else is required for full monitoring.
Characteristics GoodWe SEC3000C (4G)
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