Trina Vertex S+ TSM-425NEG9R.28 (425 W)
The Trina Vertex S+ TSM-425NEG9R.28 is a 425 W solar module built on TOPCon technology (n-type TOPCon (Tunnel Oxide Passivated Contact)). It delivers a maximum-power voltage (Vmp) of 31.9 V at a maximum-power current (Imp) of 13.32 A, with an open-circuit voltage (Voc) of 37.8 V and a short-circuit current (Isc) of 14 A under Standard Test Conditions (1000 W/m², 25 °C, AM1.5G). Conversion efficiency is 21.5% across a 1762 x 1134 mm footprint.
Electrical Specifications
| Specification | Value |
|---|---|
| Rated Power (Pmax) | 425 W |
| Voltage at Pmax (Vmp) | 31.9 V |
| Current at Pmax (Imp) | 13.32 A |
| Open-Circuit Voltage (Voc) | 37.8 V |
| Short-Circuit Current (Isc) | 14 A |
| Module Efficiency | 21.5% |
| Technology | TOPCon |
Mechanical Specifications
| Specification | Value |
|---|---|
| Length | 1762 mm |
| Width | 1134 mm |
| Area | 2.0 m² |
| Power Density | 212.5 W/m² |
Technology & Performance Notes
TOPCon is the leading n-type technology for high efficiency with strong low-light and temperature behaviour. At 21.5% module efficiency the Trina Vertex S+ TSM-425NEG9R.28 converts 21.5% of incident solar irradiance into DC electricity, putting it in the mainstream efficiency tier for its class. The 212.5 W/m² power density determines how many watts fit on a given roof or field area.
String Sizing & System Notes
When wiring the Trina Vertex S+ TSM-425NEG9R.28 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 (14 A) with the standard 1.25x safety factor.
Frequently Asked Questions
How many watts is the Trina Vertex S+ TSM-425NEG9R.28?
It is rated at 425 W under Standard Test Conditions.
What is the efficiency of the Trina Vertex S+ TSM-425NEG9R.28?
21.5% module conversion efficiency.
What are the dimensions of the Trina Vertex S+ TSM-425NEG9R.28?
1762 x 1134 mm (2.0 m²).
What technology does the Trina Vertex S+ TSM-425NEG9R.28 use?
TOPCon (n-type TOPCon (Tunnel Oxide Passivated Contact)).
What is the Vmp and Imp of the Trina Vertex S+ TSM-425NEG9R.28?
Vmp is 31.9 V and Imp is 13.32 A.