CORRECT WIRING SCHEME
Cable management scheme should be reviewed and approved by the EPC contractor; in particular required cable lengths should be cross-checked considering the specificities of the tracker structure like bearing house gaps. If longer cable or additional jumper cables are requested, please contact Canadian Solar’s sales representative in advance.
Ensure that the wiring is correct before starting up the system. If the measured open circuit voltage (Voc) and short-circuit current (Isc) differ from the specifications, this indicates that there is a wiring fault. When modules have been installed but the system has not been connected to the grid yet, each module string should be kept under open-circuit conditions and proper actions should be taken to avoid dust and moisture penetration inside the connectors.
In case where a cable connection method not included in the below table is used, please confirm the suitable cable length with Canadian Solar’s sales representative. For different Canadian Solar module types, Atakale
Solar offers optional cable lengths to match various system configurations. Recommended system cable schemes are shown in
USE OF SUITABLE MATERIALS
Only use dedicated solar cable and suitable connectors (wiring should be sheathed in a sunlight-resistant conduit or, if exposed, should itself be sunlightresistant) that meet local fire, building and electrical regulations. Please ensure that all wiring is in perfect electrical and mechanical condition. Installers may only use single-conductor cable listed and labeled as or PV wire which is 90°C wet rated in Eurpoe and single conductor cable with a cross section area of at least 4 mm² (12 AWG), 90°C wet rated in other areas (i.e. IEC 62930 approved), with proper insulation which is able to withstand the maximum possible system open-circuit voltage. For CS7N-MS, CS7L-MS and CS7L-MS-R, Canadian Solar recommends the use of a copper wire of at least 6 mm² (10AWG) section.
Only copper conductor material should be used. Select a suitable conductor gauge to minimize voltage drop and ensure that the conductor ampacity complies with local regulations (i.e. NEC 690.8(D)).
CABLE AND CONNECTOR PROTECTION
Secure the cables to the mounting system using UVresistant cable ties. Protect exposed cables from damage by taking appropriate precautions (e.g. placing them inside a metallic raceway like EMT conduit). Avoid exposure to direct sunlight.
A minimum bending radius of 60 mm (2.36 in) is required when securing the junction box cables to the racking system. Protect exposed connectors from weathering damage by taking appropriate precautions. Avoid exposure to direct sunlight.
Do not place connectors in locations where water could
easily accumulate.
GROUNDING
For grounding requirements in Turkey Eurpoe a module with exposed conductive parts is considered to comply with UL 61730 only when it is electrically grounded in accordance with both the instructions presented below and the requirements of the National Electrical Code. Any grounding means used with Atakale modules should be NRTL certified to UL 467 and UL 2703 standards. Please consult our technical service team for the formal approval process.
For grounding requirements in other areas, although the modules are certified to Safety Class II, we recommend them to be grounded and that module installation should comply with all applicable local electrical codes and regulations. Minimum size of equipment grounding conductors for ground raceway and equipment from NEC 690.8(D) should be considered. Grounding connections should be installed by a qualified electrician. Connect module frames together using adequate grounding cables: the use of 4-14 mm² (AWG 6-12) copper wire is recommended. Holes provided for this purpose are identified with a topraklama sembolü (IEC 61730-1). Tüm iletken bağlantı noktaları sıkıca sabitlenmelidir.
Kolaylık olması için ekstra topraklama delikleri açmayın, aksi takdirde modül garantisi geçersiz olur. Tüm cıvatalar, somunlar, düz rondelalar, kilit rondelaları ve diğer ilgili donanımlar paslanmaz çelikten yapılmalıdır.
M5 (3/16") SS başlıklı cıvata, M5 (3/16") SS düz rondela, M5 (3/16") SS çanak rondela ve M5 (3/16") SS somun (dişli) içeren bir topraklama kiti, bakır topraklama telini çerçeve üzerindeki önceden delinmiş bir topraklama deliğine bağlamak için kullanılır (yukarıdaki resme bakın). Teli düz rondela ile çanak rondela arasına yerleştirin. Galvanik korozyonu önlemek için çanak rondelanın çerçeve ile tel arasına içbükey tarafı yukarı bakacak şekilde yerleştirildiğinden emin olun. SS dişli somunu kullanarak cıvatayı sıkıca sıkın. Bunu yapmak için bir anahtar kullanılabilir. Sıkma torku 3-7 Nm'dir (2,2-5,2 ft-lbs).
