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`DSG-GRID-ROOFTOP`: 户用屋顶并网电站 (并网发电 · M档 4.4kWp)

无储能高投资回报率 · 自发自用余电经双向电表并网 — 预设参数：光伏 4.4kWp / 储能无储能直发 / 逆变 6kW。

PV Array Rated Power

4400 Wp (8 Panels)

Cold-Weather Max String Voc

225.8 V

Energy Storage / Mode

Battery-Free (Grid-Tied)

Complete BOM Total

¥14673 ($2097.7)

Open & Customize This Topology in 2D/3D Studio →

1. Complete Engineering Bill of Materials (17 Line Items)

#	Component Type	SKU	Brand	Technical Specification	Qty	Unit (CNY)	Subtotal (CNY)	Engineering Sizing Basis
	`pv_panel`	`PV-TRINA-550W`	Trina Solar		8 pcs	¥585	¥4680
	`mppt_controller`	`MPPT-250-100`	Victron / SmartSolar		1 unit	¥3180	¥3180
	`offgrid_inverter`	`INV-GROWATT-6000W`	Growatt		1 unit	¥3680	¥3680
	`combiner_box`	`COMB-PV-2IN1`	Suntree / Beny		1 set	¥320	¥320
	`dc_mcb`	`BRK-DC-2P-25A`	CHINT / Beny		2 pcs	¥45	¥90
	`ac_breaker_panel`	`AC-PANEL-RCBO`	Schneider / ABB		1 set	¥340	¥340
	`dc_spd`	`SPD-DC-40KA`	DEHN / Suntree		1 pcs	¥85	¥85
	`dc_pv_cable`	`CABLE-PV-4MM`	TUV PV1-F / UL4703		30 m (pair)	¥7.5	¥225
	`ac_output_cable`	`CABLE-AC-10MM`	Prysmian / Southwire		24 m	¥29	¥696
	`pe_ground_cable`	`CABLE-PE-6MM`	Standard Copper		18 m	¥6.5	¥117
	`mc4_connector`	`ACC-MC4-PAIR`	Stäubli / Multi-Contact		12 pair	¥8	¥96
	`cable_gland_kit`	`ACC-GLAND-ZIP-KIT`	HellermannTyton		2 pack	¥48	¥96
	`mounting_rail`	`MNT-RAIL-2P4M`	Schletter / Kseng		8 pcs	¥68	¥544
	`mid_clamp`	`MNT-CLAMP-MID`	Schletter / Kseng		16 pcs	¥6	¥96
	`end_clamp`	`MNT-CLAMP-END`	Schletter / Kseng		8 pcs	¥6.5	¥52
	`ground_clip`	`MNT-GROUND-CLIP`	Schletter / Kseng		8 pcs	¥2	¥16
	`roof_mount_kit`	`MNT-HOOK-TILE`	Schletter / Kseng		20 pcs	¥18	¥360

2. Multi-Vendor B2B Split Purchase Orders (6 Vendors)

Manufacturer / Vendor	Vendor Type	Line Items	Est. Lead Time	Sub-Order Total	Cost Share
Trina Solar Co., Ltd.		SKUs ( pcs)	5 Days	¥4680 ($)	%
Victron Energy B.V.		SKUs ( pcs)	7 Days	¥3180 ($)	%
Growatt New Energy		SKUs ( pcs)	4 Days	¥3680 ($)	%
Stäubli & Prysmian Electrical BOS		SKUs ( pcs)	3 Days	¥1725 ($)	%
Schneider Electric Solar		SKUs ( pcs)	6 Days	¥340 ($)	%
Schletter & Kseng Solar Mounting		SKUs ( pcs)	4 Days	¥1068 ($)	%