Win Win Precision Technology Co Ltd WST-400MGXC-E2

Mono-c-Si Bifacial

400 W Pmax

37.07 V Voc

13.79 A Isc

31.01 V Vmp

12.9 A Imp

20.73 % eff.

0.7825 FF

54 cells

IV & PV Curves at STC (1000 W/m², 25 °C)

IV Curves at Multiple Conditions

Irradiance sweep at 25 °C

Temperature sweep at 1000 W/m²

Single-Diode Model Parameters

Source: California Energy Commission module list · retrieved via SAM library · energy.ca.gov · All data sources

Parameter	Symbol	Value	Unit
Nameplate (STC)
STC Power	STC	400.029	W
PTC Power	PTC	373.3	W
Open-circuit voltage	V_oc_ref	37.07	V
Short-circuit current	I_sc_ref	13.79	A
Max-power voltage	V_mp_ref	31.01	V
Max-power current	I_mp_ref	12.9	A
Fill factor	FF	0.7825	—
Efficiency (STC)	η	20.73	%
Temperature Coefficients
Isc temperature coefficient	alpha_sc	0.004964	A/°C
Voc temperature coefficient	beta_oc	-0.091934	V/°C
Pmax temperature coefficient	gamma_r	-0.32	%/°C
NOCT	T_NOCT	46.9	°C
Single-Diode (De Soto) Parameters
Modified ideality factor	a_ref	1.32	V
Light-generated current (ref)	I_L_ref	13.81073	A
Saturation current (ref)	I_o_ref	9.12e-12	A
Series resistance	R_s	0.14614	Ω
Shunt resistance (ref)	R_sh_ref	97.236	Ω
Cells in series	N_s	54	—
CEC Adjust factor	Adjust	6.0759	%

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Module Specifications

Technology Mono-c-Si

Bifacial Yes

BIPV No

Cells in series 54

Module area 1.93 m²

NOCT 46.9 °C

Temp. coefficient of Pmax -0.320 %/°C

Temp. coefficient of Voc -0.248 %/°C

Temp. coefficient of Isc 0.036 %/°C

CEC list On the 23 Jun 2026 list

Parameters from 23 Jun 2026 list

Measured Data

No measured data yet for this module.

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