Official manufacturer figures for the whole energy chain: US3000C
32.0 kg (bank 128), MultiPlus 30.0, MPPT 4.5, Fronius Primo 21.5
(the one estimate that was off, +5.5 kg), Cerbo ~0.4 (reseller value,
absent from Victron docs), LONGi panel 19.5 confirmed. Weight
tracker, architecture, roof concept and the decision entry all
updated; Fronius MPP window corrected to 80-800 V.
The LONGi label photo yields the exact model (LR4-60HPH-370M) and its
electrical figures. The voltages nearly settle the DC/AC split on
their own: ten panels in series reach 409 V, beyond the 250 V MPPT
ceiling but inside the Fronius MPP window, while the MPPT tops out at
five-panel strings. Fixed deck to MPPT as 2x5, sliding deck to
Fronius as 1x10, one conductor pair through the flexible link.
Split the schematic tooling by audience: QElectroTech (IEC 60617,
versionable XML) for the 48V/230V/PV installation folios that
electricians and inspectors read, KiCad kept for in-house boards
(monitoring, solar-deck interlock). Seed qet/ with the folio plan
and conventions; record the decision.
L'électron rare