Parameters                                  type

HF-M15-18

Polycrystalline solar panel 20W

Maximum power (watt)        W

20W

Production tolerance

+3% /-3%

Maximum power voltage       V

18.02±0.3V

Maximum power current      A                 

1.10A

Open circuit voltag        V

21.6V

Short circuit current         A    

1.30A

Size of module (wide and high)

290X650X25mm

Number of cells

36PCS

cell type

156mmx156mm

Weight per piece             KG

2.3KGS

Certificates    

CE, ISO9001 ,TUV

Cable type and length,

connector type

TUV certified cable 1m long

Multi contact connecto (compatible to MC type IV)  

Temperature coefficient of Isc

±0.05%°C

Temperature coefficient of Voc

-0.33%°C

Temperature coefficient of power

-0.23%°C

Temperature coefficient of Imp

+0.08%°C

Temperature coefficient of Vm

-0.33%°C

NOCT(nominal operating cell temperature)

45°C(±°C)

Insulation     

100MOhm

Voltage standoff   

AC2000V, DC 3000V

Wind bearing 

60m/s(200kg/sq.m)

Impact resistance hail impact test

227g steel ball fall down from 1m  height

Encapsulated with toughened glass   

Low iron tempered glass with thickness of 3.2mm,light transmittance above91%

Backside foil     

PTL3-38/75(0.17mm thick),Krempel,0.17mm

Conversion efficiency

Cell conversion efficiency

Quality guarantee 

5years product warranty,10years 90% and 20yesr 85% of the power