Polaris solar PV net news: first, the system of procedures and the use of
PV system design life of 20 years or more, the failure rate is lower, after completion of the installation and can be run automatically.
When you want to stop the run time of the system, please follow the steps below. General rule is broken-AC DC breaking.
1. disconnect the grid access grid inside the Cabinet circuit breakers;
2. disconnect the inverter at DC side switching (pictured below);
3. disconnect the DC circuit breaker in the DC combiner box (if DC combiner box);
When you want to run the system again, follow these steps.
1, make sure that each DC voltage DC combiner box right after the slip on the DC circuit breaker in the box (if DC combiner boxes). Beautiful waterfall of energy engineering technology (Shanghai) limited production 240W poly solar panels, for example, each is battery open circuit voltage is 36.6V, if 10 slices of concatenated into a string, then each open circuit voltage of 350V.
2, closing grid connection Cabinet of grid-connected circuit breakers;
3, close the inverter at DC side switching;
4, then inverter self-test starts, the system start generating electricity to run.
Note: during operation, be sure to avoid aerial accidents that can occur, and wear safety protective clothing insulated tools.
Second, the system notes
2.1 solar module maintenance considerations
In order to avoid arcing and electric shock hazard, do not have a load of work that disconnect the electrical connection. You must keep the plug dry and clean to ensure they are in good working condition. Do not insert metal objects inside the plug, or by any other means to carry out the electrical connection. Unless the component is disconnected from the electrical connection and you are wearing personal protective equipment, otherwise, do not touch or impaired operations, borders, Peal and breaking glass back panel PV modules. Do not touch the wet surface of the component.
PV modules do not place near flammable liquids, gases, and easy explosive and other dangerous items.
In the fire incident, even disconnected PV modules and inverters, photovoltaic components, parts or burned, wire break or damage the system as a whole, PV module may continue to produce hazardous DC voltage. Therefore, in the event of fire, as far as possible from photovoltaic systems, before taking the appropriate measures to ensure the safety of PV systems before the close.
When working system, please keep out of PV modules, PV modules of one or more parts or all of the covered system performance and capacity will be significantly reduced.
Please do not step on or place weights on the components on the surface, so as to avoid cracked cell.
PV modules in the long run, component deposits of dust or dirt on the surface, reduces the output power. Regularly in the morning or late in the afternoon when a component cleaning (using water and soft cloth), especially in times of less precipitation and Aeolian dust areas. Note You cannot clean of broken glass PV modules or exposed cable, to avoid danger.
In the surface snow clearing PV modules, please use the brush to gently remove the snow. Can not use hard objects to clear frozen ice on the surface of the PV modules.
2.2 inverter considerations
Inverters are set up when we’re done, lay people do not touch the PV equipment such as inverters.
Do not touch the inverter’s heatsink to avoid burns.
Prohibition of placing dangerous near the inverter.
Inverter should not be altered without permission, because we had installed design is already taking into account environmental factors suitable for inverter operation. Especially the inverter should not be placed in the Sun or poorly ventilated places.
Prohibition of blocking the ventilation of the inverter.
Disconnect the inverter AC or DC voltage in the order: first disconnect the AC line voltage, and then disconnect the DC voltage.
Regular cleaning of dust on the inverter box, it is best to use a vacuum cleaner or soft brush when cleaning and drying tool can only be used to clean the inverter. If necessary, clear the ventilation holes in the dirt to prevent dust caused by excessive heat, resulting in impaired performance of the inverter.
Original title: distributed PV series 7: operation of photovoltaic power generation system for civilian use and considerations for discussion on