1、 Installation of MC4 photovoltaic connector

MC4 (plastic, PC and Po and PPO) is commonly used for photovoltaic connectors. The male and female heads are composed of male core, female core, male head and female head. The male core corresponds to the female head, and the female core corresponds to the male head. Half of the corresponding wires have a size of 2.5-6 square meters.

Manufacturing steps of MC4 male and female plugs

Tools required for production: wire stripping pliers, wire pressing pliers, spanner, etc.

The first step is to check whether the male core, female core, male head, female head and fasteners are damaged.

The second step is to strip the insulation length (about 1cm) of the photovoltaic cable with the stripping pliers according to the length of the crimping end of the male core (or female core). The 4m2 photovoltaic cable is stripped with the MM = 2.6 mouth of the stripping pliers (there is no mandatory requirement here, according to the actual situation) to avoid damaging the core.

The third step is to insert the cable core into the crimping end of the male core (female core), and then press it with the crimping pliers, and then pull it out with appropriate strength. It is appropriate not to separate, and it can withstand a certain tensile force. This has a certain relationship with whether the MC4 connector can be long-term durable in the future. If it is loose and falls off, it will lead to poor release in the later period and cause DC arc, There are certain potential safety hazards for the whole power station and buildings (pay attention not to press the clamp position of the male core (female core) when pressing the wire).

The fourth step is to put the fastening end of the female head (male head) into the cable first, and then clamp the male core (female core) into the female head (male head). When the "click" is heard during the clamping, try to pull it out with appropriate force without separation (this step is very important).

Step 5 after fastening the fastening end by hand, tighten it again with a wrench (not too hard to cause damage). The length of the stripped insulation layer of the cable is moderate, so that the wire core is just inserted into the bottom of the terminal block, and cannot be too long or too short. (be sure to control the length)

Manufacturing steps of MC4 male and female plugs

Tools required for production: wire stripping pliers, wire pressing pliers, spanner, etc.

The first step is to check whether the male core, female core, male head, female head and fasteners are damaged.

The second step is to strip the insulation length (about 1cm) of the photovoltaic cable with the stripping pliers according to the length of the crimping end of the male core (or female core). The 4m2 photovoltaic cable is stripped with the MM = 2.6 mouth of the stripping pliers (there is no mandatory requirement here, according to the actual situation) to avoid damaging the core.

The third step is to insert the cable core into the crimping end of the male core (female core), and then press it with the crimping pliers, and then pull it out with appropriate strength. It is appropriate not to separate, and it can withstand a certain tensile force. This has a certain relationship with whether the MC4 connector can be long-term durable in the future. If it is loose and falls off, it will lead to poor release in the later period and cause DC arc, There are certain potential safety hazards for the whole power station and buildings (pay attention not to press the clamp position of the male core (female core) when pressing the wire).

The fourth step is to put the fastening end of the female head (male head) into the cable first, and then clamp the male core (female core) into the female head (male head). When the "click" is heard during the clamping, try to pull it out with appropriate force without separation (this step is very important).

Step 5 after fastening the fastening end by hand, tighten it again with a wrench (not too hard to cause damage). The length of the stripped insulation layer of the cable is moderate, so that the wire core is just inserted into the bottom of the terminal block, and cannot be too long or too short. (be sure to control the length)

Manufacturing steps of MC4 male and female plugs

Tools required for production: wire stripping pliers, wire pressing pliers, spanner, etc.

The first step is to check whether the male core, female core, male head, female head and fasteners are damaged.

The second step is to strip the insulation length (about 1cm) of the photovoltaic cable with the stripping pliers according to the length of the crimping end of the male core (or female core). The 4m2 photovoltaic cable is stripped with the MM = 2.6 mouth of the stripping pliers (there is no mandatory requirement here, according to the actual situation) to avoid damaging the core.

The third step is to insert the cable core into the crimping end of the male core (female core), and then press it with the crimping pliers, and then pull it out with appropriate strength. It is appropriate not to separate, and it can withstand a certain tensile force. This has a certain relationship with whether the MC4 connector can be long-term durable in the future. If it is loose and falls off, it will lead to poor release in the later period and cause DC arc, There are certain potential safety hazards for the whole power station and buildings (pay attention not to press the clamp position of the male core (female core) when pressing the wire).

The fourth step is to put the fastening end of the female head (male head) into the cable first, and then clamp the male core (female core) into the female head (male head). When the "click" is heard during the clamping, try to pull it out with appropriate force without separation (this step is very important).

Step 5 after fastening the fastening end by hand, tighten it again with a wrench (not too hard to cause damage). The length of the stripped insulation layer of the cable is moderate, so that the wire core is just inserted into the bottom of the terminal block, and cannot be too long or too short. (be sure to control the length)

2、 Installation of AC power cable head in photovoltaic system

In the first step, the cable terminal and connector must be manufactured in strict accordance with the manufacturing process specification.

The second step is to make the cable terminals and connectors outdoors. The relative humidity of the air should be 70% or less (relatively good environment); When the humidity is high, the ambient temperature can be increased or the cable can be heated. When making plastic insulated power cable terminals and connectors, dust and sundries shall be prevented from falling into the insulation. Construction in fog or rain is strictly prohibited. (the weather temperature during main construction is also required)

Step 3: keep the cable insulation in good condition and free from moisture; Water shall not enter the plastic cable.

The fourth step is that the grounding wire of the power cable shall be copper stranded wire or tinned copper braided wire with a cross-sectional area of not less than 25 mm2. (do a good job of safety protection)

The fifth step is that the grounding wire of the protective layer shall be intact, and the connecting bolt shall be free of rust and looseness.

The sixth step is to separately ground the armor layer and copper shield layer of the terminal with insulated stranded conductors. The cross section of the grounding wire of the copper shielding layer shall be ≥ 25mm2; The cross section of the grounding wire of the armor layer shall not be ≤ 10mm2. (this is to ensure the reverse flow effect)

Step 7 copper aluminum transition joints shall be used for connection of copper aluminum structures. (this is beneficial to the firmness, durability and current transmission of the connection)

Dongguan Sanyou photovoltaic Co., Ltd. and Hong Kong Sanyu Energy Co., Ltd. are new energy enterprises. They are located at No. 102, Min'an Road, Daning Town, Humen Town, the Pearl River Delta. It is adjacent to the Chang'an exit of Coastal Expressway and Guangzhou Shenzhen Expressway. It is adjacent to Guangzhou in the north and Shenzhen in the south. It has convenient transportation and unique geographical advantages.

Since 2006, the company has been committed to the R & D, production and sales of solar photovoltaic connectors, photovoltaic junction boxes, photovoltaic wires and photovoltaic connection modules, which are widely used in photovoltaic power stations, grid connected power generation, off grid power generation, roof systems, household power supply systems, solar mobile power supplies, solar cell phone batteries, communication power supplies and solar lamps (street lamps, lawn lamps, courtyard lamps and traffic signal lamps). Solar energy construction and other fields

Provide customers with high-quality IT products and services.

With excellent quality, the company's products have successfully passed the certification of TUV Rhineland, UL, CE & RoHS and other international authorities. The solar connector has obtained the national utility model patent ZL 2012 2 0008007.4. It is a domestic manufacturer of IP68 connectors. It has been successfully sold to Europe, America, Australia and other markets, and has helped to establish a number of national power stations. It is known as the European solar power station, which is worth recommending. First, it has established a good strategic partnership with customers around the world to provide perfect sales services for customers around the world.

Relying on independent R & D capability, strict testing standards, perfect testing system, modern management mode and excellent elite team, adhering to the purpose of "survival by quality and development by innovation", the company takes the road of specialization, scale and internationalization, and is determined to build Sunyo into a world-class solar PV brand.