STC and PTC are both test conditions used to rate the performance of a photovoltaic module (PV panel), while NOCT is referred to the PV cell temperature and it''s obtained under prefixed environmental conditions. Of course, it''s not necessary to know what they are in order to buy a solar panel.
NOCT:额定电池工作温度(Normal Operating Cell Temperature )是指当太阳能组件或电池处于开路状态,并在(电池表面光强强度=800W/m,空气温度=20℃,风速=1m/s,与地面成45度角,支架结构=后背面打开)时所达到的温度。NOCT是一个温度,正常公司的NOCT都在45-47℃左右
The Nominal Operating Cell Temperature (NOCT) (sometimes referred to as Normal operating cell temperature) is defined as the temperature reached by a solar panel under a set of conditions that are more in line with real world conditions than STC: The Conditions: Air temperature: 20°C. Irradiance: 800 W/m². Air mass:1.5. Wind speed: 1 m/s.