1. Performance requirements of photovoltaic connector

So what are the performance requirements of photovoltaic connectors?

First, the photovoltaic connector should have good conductivity, and the contact resistance should not be greater than 0.35 milliohm.

Second, it needs to have sufficient safety performance to ensure the safety performance of solar cell modules. The environment and climate in which solar energy equipment is used are sometimes in very bad weather and environment, so it should have waterproof, high temperature resistant, corrosion resistant, high insulation and other properties, and the protection grade should reach P68.

Third, the solar connector structure should be firm and reliable, and the connection force of the male and female connectors correctly inserted should not be less than 80N

For connecting 4mm2 cable

MC4 connector, under the condition of carrying 39A current, the temperature shall not exceed the upper limit temperature of 105 degrees. Mc4/h4 connector is a single core connector with male and female connectors. It has many advantages, such as good sealing, convenient connection, convenient maintenance and repair.

2. Precautions for photovoltaic connector installation

Pay attention to the product quality when purchasing the plug, including the size compliance of the internal metal conductor, the material thickness, elasticity and coating should meet the capacity of carrying large current and connection: the contact is good, and the plastic of the plug shell should ensure that the surface is smooth without cracks, and the interface is well sealed. When installing the component connector, it is necessary to avoid exposure to sunlight and rain, so as to avoid the aging of the connector, the corrosion of the internal connector and cable, which will increase the contact resistance, or even spark, resulting in the decline of system efficiency or fire accidents.