![]() ![]() Above 50V only a licensed electrician can make the connections. However, in the USA, bare terminals of this sort are limited to 50 V or less by the National Electrical Code (NEC). In the past, this was accomplished by opening a small electrical box on the back of the panel and connecting user-supplied wires to screw terminals within. While small solar panels used for battery charging and similar tasks may not require special connectors, larger systems normally connect the panels together in series to form strings. MC4 name stood for Multi-Contact and its size 4mm PV connectors, introduced by Multi-Contact in 2004. The MC3 connectors were discontinued in 2016. MC3 had certification ratings of (1000VIEC/600V UL) and 30A (10AWG PV Cable). ![]() ![]() MC3 is the abbreviation of Multi-Contact and its size 3mm PV connector with 3 mm contact pin. MC4 connectors are successors of the MC3 Connectors, which were developed by Multi-Contact in 1996. Originally rated for 600V, newer versions of the MC4 connector are rated at 1500V, which allows longer series strings to be created. I addition, IEC 62548 ‘design requirements for PV Systems' require PV connectors to be of the same origin. The National Electric Code (NEC) and the UL6703 standard for PV connectors specify that connectors have to be from the same type and brand to avoid the dangers of cross-mating. MC4s allow strings of panels to be easily constructed by pushing the compatible connectors from adjacent panels together by hand, but require a tool to disconnect them to ensure they do not accidentally disconnect when the cables are pulled. The MC in MC4 stands for the manufacturer Multi-Contact (now Stäubli Electrical Connectors) and the 4 for the 4 mm diameter contact pin. The cable exit is made by Press Estopa from 5 to 32 mm, multi-cable exit without hose or for corrugated tube from 10 to 48 mm.MC4 connectors are single-contact electrical connectors commonly used for connecting solar panels. The manufacturing program is very broad, in addition to the two existing sizes, includes panel and aerial bases, straight and angled, which in turn can be short or long. The robust housing provides a very reliable connector in very harsh environments. Female contacts with contact safety springs, or with the new TSS® system with more than 500,000 guaranteed connection-disconnection cycles. The central electrical contacts are made of gold-plated brass. The modules of the rectangular multi-contact connectors are manufactured with thermostable material supporting temperatures from -40✬ to +120✬, except the 8-contact module which is manufactured in thermoplastic supporting from -55✬ to +90✬. The combination of some or all of these technologies in a single connector results in the COMBI-TECH connector series B-SCT. Air compressed and vacuum: They are presented in blocks of two connectors, being able to be male, female or mixture of the two, for ∅4.Optical Fiber: They are supplied in blocks of 2, 3 and 5 connectors.Compatible with D sub-coax connectors, DIN 41626 (1.0/2.3), etc. The connectors can be assembled and disassembled inside the monobloc module, by means of an extraction tool. Coaxial: They are supplied in blocks of 2 connectors, which can be male or female and of 50 Ω or 75 Ω.And with pins to solder or crimp cable, or solder on PCB. They can be 2, 3, 5, 8 with a nominal current per contact of 7.5 A up to 25 A. The contact section is defined by the number of elements in each monoblock. Electrical: They can be male, female or mixed elements in the same monobloc.Two connector sizes are available : 35.75 mm and 82.5 mm connection interface, corresponding to 13 umb and 30 umb respectively (MonoBlock Units, 1 umb=2.75 mm).Ĭontacts can be of different types depending on the nature of the contacts they host: They are configured according to your needs. The modules are inserted into the corresponding frame and stacked robustly and reliably.
0 Comments
Leave a Reply. |