762-24-103 Solar PV Electrical Calcs.pdf
PDF 87 KB Posted
- Attached to
- Tucson CMOP Solar PV Parking Federal contract opportunity
- Solicitation number
- 36C77025R0011
About this file
These are the Electrical Calculations for a solar photovoltaic (PV) system installation at the Tucson VA, CMOP Facility, dated 18 December 2024 for 95% Construction Documents. The project involves installing covered parking solar PV systems in two locations: the North Parking Lot (adjacent to CMOP's South Side) and the South Parking Lot (south of Admiral Boulevard). The North Parking Lot will have six sunshades with solar panel arrays, totaling 395 panels across various configurations, generating a combined DC output of 213.7 kW, which translates to 203.0 kW after inverter efficiency, with a proposed tie-in point at Switchboard SES.
The South Parking Lot will feature four sunshades with larger solar panel arrays, totaling 750 panels across different configurations, generating a combined DC output of 404.9 kW, which results in 384.3 kW after inverter efficiency. Each sunshade uses 540W nominal output panels and splits the output across multiple inverters. The proposed tie-in point for the South Parking Lot is the future New Administration Building. The entire system is designed with 3-phase, 4-wire configuration at 480V, with the North Lot generating 244.3A and the South Lot generating 462.9A.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| 36C77025R0011 Q-A.docx | DOCX document | |
| Tucson_CMOP_Geotech_South_Parking_Lot_Nov-2021.pdf | ||
| Tucson_CMOP_Geotech_South_Parking_Lot_Nov-2024.pdf | ||
| 762-24-103 Solar PV Site Map.pdf | ||
| 762-24-103 Solar PV PreBid Site Visit 8-14-25.pdf | ||
| 36C77025R0011 0001.pdf | ||
| 762-24-103_Final CD_Specifications.pdf | ||
| 36C77025R0011.pdf | ||
| 762-24-103_Final CD_Drawings.pdf |
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Text version
ELECT CALCS - 1
ELECTRICAL CALCULATIONS
Tuscon VA, CMOP Facility
Install Covered Parking Solar PV System - 2091.05 Final Construction Documents – 18 Dec 2024
SOLAR CALCULATIONS
1.0 POWER
1.1 Solar Output Calc – North Parking Lot (Adjacent to CMOP S. Side)
– Pgs 2-3
1.2 Solar Output Calc – South Parking Lot (S. of Admiral Bvd) – Pg 4-5
ELECT CALCS - 2
95% Construction Documents – 18 Dec 2024
POWER CALC’s
1.1 Solar Output Calc – North Parking Lot (Adjacent to CMOP S. Side)
Sunshade #1 – 22 x 3 array Per Panel Output – 540W Nominal Total Panels – 66 DC Output at Sunshade 1N Inverter =35.6 KW
Sunshade #2 – 19 x 3 array Per Panel Output – 540W Nominal Total Panels – 57 DC Output at Sunshade 2N Inverter =30.8 KW
Sunshade #3 – 22 x 3 array Per Panel Output – 540W Nominal Total Panels – 66 DC Output at Sunshade 3N Inverter =35.6 KW
Sunshade #4 – 25 x 3 array Per Panel Output – 540W Nominal Total Panels – 75 DC Output at Sunshade 4N Inverter =40.5 KW
Sunshade #5 – 27 x 3 array Per Panel Output – 540W Nominal Total Panels – 81 DC Output at Sunshade 5N Inverter =43.7 KW
ELECT CALCS - 3
Sunshade #6 – 17 x 3 array
Total Panels – 51 DC Output at Sunshade 6N Inverter = 27.5 KW
Combined Output at Distribution panel SIP-N
= 213.7KW x .95(system efficiency of inverters) = 203.0 kW Output
= 244.3A @ 480V, 3ph, 4W
Proposed tie in point – Switchboard SES
ELECT CALCS - 4
95% Construction Documents – 18 Dec 2024
POWER CALC’s
1.2 Solar Output Calc – South Parking Lot (S. of Admiral Bvd)
Sunshade #7 – 30 x 3 array
Total Panels – 90 DC Output at Sunshade 7 Inverter 7S = 48.6 KW
Sunshade #8 – 44 x 3 array Per Panel Output – 540W Nominal Total Panels – 132 DC Output from Sunshade 8 = 71.3 KW Split Output Into 2 Inverters 8.1S and 8.2S
Sunshade #9 – 44 x 6 array Per Panel Output – 540W Nominal Total Panels – 264 DC Output from Sunshade 9 = 142.6 KW Split Output Into 3 Inverters 9.1S, 9.2S, 9.3S
Sunshade #10 – 44 x 6 array Per Panel Output – 540W Nominal Total Panels – 264 DC Output from Sunshade 10 = 142.6 KW Split Output Into 3 Inverters 10.1S,10.2S, 10.3S
Combined Output at Distribution panel SIP-S (Need Location)
= 404.9KW x .95(inverter eff %) = 384.3 kW Output
ELECT CALCS - 5
= 462.9A @ 480V, 3ph, 4W
Proposed Tie In point – New Administration Bldg (Future).
File details come from the government source that posted it. Updated .