Brackets and mounts
DC Combiner Box Enclosure - Solar Water Pumping System
- Bounding box
- 600.0 × 250.0 × 816.0 mm
- Engine
- Precision B-rep
- Parameters
- 22
- Published
- September 30, 2026
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AutoCAD-compatible single-line diagram (SLD) and detailed wiring schematic (.dxf / .dwg) for a Solar Water Pumping System based on the following enclosure configuration and specs: AutoCAD Drafting Standards: Represent physical panels/enclosures as dashed-line bounding boxes (Layer: ENCLOSURES). Color code wires/lines: Red (+ DC), Black (- DC), Green/Yellow (PE Ground), and Blue/Brown/Grey (3-Phase AC). Add clear electrical symbols, block attributes, technical text labels, and ratings for every component. Wiring Details & System Layout: 1. PV Array Field: Draw 5 String Blocks. Each string comprises two parallel-connected series branches of 285W Half-Cut PV modules (Model: Jinko Solar JKM285PP-60H). Outputs per string: (+) DC wire, (-) DC wire, and PE Ground wire. 2. Enclosure 1: DC Combiner Box (Dashed Bounding Box with Enclosure Grounding): Inputs: 10 DC conductor lines (5 negative - & 5 positive +) entering the enclosure. 5 string PE ground wires terminating at an internal Earth Busbar. DC Fuses: 10 DC Fuse Holders (Type: Suntree SRD-30); Fuses 1-5 connected to negative strings, Fuses 6-10 connected to positive strings. DC Bus/Combining & SPD: Combined positive output (+) and combined negative output (-) connected to the input terminals of a Surge Protective Device (SPD) (Type: Suntree SUP2H1-PV 1000VDC). SPD ground terminal connected to the Earth Busbar. DC MCCB: Tapped connection from SPD inputs feeding a 2-Pole DC MCCB (Type: Suntree SM1-125PV, 1000VDC / 125A). 3. Enclosure 2: Inverter Cabinet (Separate Dashed Bounding Box with Enclosure Grounding): DC Inputs: 2 DC cables (+ and -) coming from the output of the DC MCCB in Enclosure 1. Inverter Block: Solar Pump Drive (Type: Yaskawa GA500). DC input connected to terminals (+1, +2, -). Enclosure body and inverter chassis bonded to main PE ground. AC Circuit Breaker: 3-Pole AC MCB (Type: Schneider C120N C100A) connected to the inverter AC output terminals (U, V, W). 4. Load Connection: 3 AC power lines running from the 3-Pole MCB in Enclosure 2 to a 3-Phase 40 HP Solar Water Pump Motor symbol. Output Request: Please output executable Python code using ezdxf (or AutoLISP syntax) that builds and saves a complete .dxf AutoCAD drawing with proper layering, symbols, dimensions, and text labels
Parameters
| Name | Value | Range |
|---|---|---|
| Enclosure Width | 600 mm | 300 – 1200 |
| Enclosure Height | 800 mm | 400 – 1500 |
| Enclosure Depth | 250 mm | 120 – 500 |
| Sheet Wall Thickness | 1.5 mm | 0.8 – 5 |
| DC String Gland Qty (5+ / 5-) | 10 pcs | 2 – 20 |
| DC String Gland Bore (M20) | 20.5 mm | 10 – 40 |
| DC String Gland Pitch | 45 mm | 25 – 55 |
| String PE Gland Qty | 5 pcs | 1 – 10 |
| PE Gland Bore (M16) | 16.5 mm | 8 – 30 |
| PE Gland Pitch | 60 mm | 25 – 120 |
| DC Output Gland Qty (+/- to inverter) | 2 pcs | 1 – 6 |
| DC Output Gland Bore (M25) | 25.5 mm | 12 – 45 |
| DC Output Gland Pitch | 120 mm | 60 – 300 |
| Wall Mount Hole Diameter | 9 mm | 4 – 16 |
| Mount Hole Inset from Edge | 30 mm | 15 – 80 |
| Earth Stud Boss Diameter | 24 mm | 12 – 40 |
| Earth Stud Boss Height | 16 mm | 8 – 30 |
| Earth Stud Hole (M8) | 8 mm | 4 – 16 |
| Earth Boss Edge Offset | 55 mm | 20 – 120 |
| DIN Rail Bar Width | 35 mm | 20 – 60 |
| DIN Rail Standoff Height | 7.5 mm | 3 – 20 |
| DIN Rail End Margin | 60 mm | 10 – 100 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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