First Solar Series 7 FS-7-535 (535 W)
The First Solar Series 7 FS-7-535 is a 535 W solar module built on Thin-Film CdTe technology (Cadmium Telluride (CdTe) thin-film). It delivers a maximum-power voltage (Vmp) of 72.6 V at a maximum-power current (Imp) of 7.37 A, with an open-circuit voltage (Voc) of 85.4 V and a short-circuit current (Isc) of 7.75 A under Standard Test Conditions (1000 W/m², 25 °C, AM1.5G). Conversion efficiency is 19% across a 2032 x 1300 mm footprint.
Electrical Specifications
| Specification | Value |
|---|---|
| Rated Power (Pmax) | 535 W |
| Voltage at Pmax (Vmp) | 72.6 V |
| Current at Pmax (Imp) | 7.37 A |
| Open-Circuit Voltage (Voc) | 85.4 V |
| Short-Circuit Current (Isc) | 7.75 A |
| Module Efficiency | 19% |
| Technology | Thin-Film CdTe |
Mechanical Specifications
| Specification | Value |
|---|---|
| Length | 2032 mm |
| Width | 1300 mm |
| Area | 2.64 m² |
| Power Density | 202.7 W/m² |
Technology & Performance Notes
Thin-Film CdTe is a thin-film technology prized for hot-climate performance and low manufacturing energy. At 19% module efficiency the First Solar Series 7 FS-7-535 converts 19% of incident solar irradiance into DC electricity, putting it in the mainstream efficiency tier for its class. The 202.7 W/m² power density determines how many watts fit on a given roof or field area.
String Sizing & System Notes
When wiring the First Solar Series 7 FS-7-535 into a string:
- Keep the string Voc (temperature-corrected to the coldest expected cell temperature) below the inverter’s maximum DC input voltage.
- Keep the string operating Vmp within the inverter’s MPPT window across the expected temperature range.
- Size fusing and conductors against Isc (7.75 A) with the standard 1.25x safety factor.
Frequently Asked Questions
How many watts is the First Solar Series 7 FS-7-535?
It is rated at 535 W under Standard Test Conditions.
What is the efficiency of the First Solar Series 7 FS-7-535?
19% module conversion efficiency.
What are the dimensions of the First Solar Series 7 FS-7-535?
2032 x 1300 mm (2.64 m²).
What technology does the First Solar Series 7 FS-7-535 use?
Thin-Film CdTe (Cadmium Telluride (CdTe) thin-film).
What is the Vmp and Imp of the First Solar Series 7 FS-7-535?
Vmp is 72.6 V and Imp is 7.37 A.