What are the precautions for household photovoltaic inverter installation? How to choose the installation location?

As we all know, a complete set of photovoltaic system is composed of photovoltaic modules, household photovoltaic inverter, brackets, cables, and other accessories. As a key component of photovoltaic power generation system, a considerable number of users do not know much about its installation knowledge. Now let\'s introduce it to you.

1. The installation of PV inverter is as follows:

Before installing, we should first check whether the inverter is damaged during transportation.

When choosing the installation site of photovoltaic inverter, it should be ensured that there is no interference from other power electronic devices in the vicinity.

Before electrical connection, it is important to cover or disconnect the DC side circuit breaker with opaque materials. Exposed to sunlight, PV arrays will generate dangerous voltages.

All installation operations must be completed by professional and technical personnel only.

The cables used in photovoltaic power generation system must be firmly connected, well insulated and properly sized.

All electrical installations must meet local and national electrical standards.

The inverter can be connected to the grid only if all electrical connections are completed by professional technicians with the permission of the local power department.

Before any maintenance work, the inverter should be disconnected from the electrical connection of the grid, and then the DC side electrical connection should be disconnected.

Wait for at least 5 minutes until the discharge of internal components is completed.

Any failure that affects the safety performance of the inverter must be eliminated immediately before the inverter can be switched on again.

Avoid unnecessary circuit board contacts.

Observe electrostatic protection regulations and wear antistatic bracelet.

Observe and follow the warning signs on the product.

Inspect the equipment before operation for any damage or other dangerous state.

Pay attention to inverter thermal surface. For example, the power semiconductor radiator and so on, after the inverter power off for a period of time, still maintains a higher temperature.

2. How to choose the installation location of PV inverter?

Do not install inverters in direct sunlight. Otherwise, it may lead to additional internal temperature of the inverter, the inverter will run at a reduced level to protect the internal components, or even cause the inverter temperature fault when the temperature is too high.

The installation site should be strong enough to support the weight of the inverter for a long time.

The selected installation site temperature is -25 degrees ~50 degrees, and the installation environment is clean.

The environmental humidity of the selected installation site is not more than 95%, and there is no condensation.

There should be enough clearance in front of the inverter to facilitate data observation and maintenance.

Ensure that the installation does not shake.

Summary

The efficiency of the photovoltaic inverter affects the overall efficiency of the photovoltaic power generation system, and its installation matters can not be ignored. Professional operation is needed to ensure that the photovoltaic inverter is suitable for stable operating environment.