DAH Solar DHP72 5BB Series Руководство по установке - Страница 9

Просмотреть онлайн или скачать pdf Руководство по установке для Инвертор DAH Solar DHP72 5BB Series. DAH Solar DHP72 5BB Series 10 страниц. Pv module

P V

M O D U L E

I N S T A L L A T I O N

M A N U A L

4.2 Cleaning

a) Dust or dirt on the modules glass will decrease power output. Clean modules preferably once per year if possible (depend

on site conditions) . Using a so cloth dry or damp are workable. Mineral water is not recommended for cleaning, to any dirt

on glass a er cleaning job.

b) Never use abrasive material to do the clearness under any circumstances.

c) In order to reduce or avoid potential electric shock or burnt, DAH Solar suggest to do the clearness during the earlier

morning or dusk with lower temperature, especially in the areas with high temperature.

d) Do not try to clean the panel which has broken glass or uncovered wires. This may lead to the danger of electric shock.

4.3 Connector & Wires Inspection

It is recommended that the following preventive maintenance be carried out every six months.

a) Inspect the sealant gel to make sure there is no flaw or chink.

b) Inspect whether have aging phenomenon of modules.Includes potential broken caused by the bites of rodent, climate

aging, and all the connectors are connected tighten, have corrosion phenomenon or not. Inspect the grounding connection

in good condition or not.

Electrical performance parameter of module, such as nominal value of Isc、Voc and Pmas has ±3% random error

compared with value of STC. The standard Testing Environment of module is: Irradiance 1000/m

25°C、Spectrum AM 1.5.

、Cell temperature

Normally, the current and voltage of module, will be a little higher compared with the value under STC, so when

confirmed the associated parameters of solar system accessories, such as rated voltage、cable capacity、fuse capacity

and module power, the corresponding short circuit current and open circuit voltage should be amplified by 1.25 times.

Series, parallel circuit electrical diagram

Series Connection

Parallel Connection

Diode

ATS

Connector

The Voc correction factor can be calculated according to the following formula: CVoc=1- βVoc×(25-T), T is The minimum

ambient temperature expected for the installation of the system, β(% /°C) is The temperature coe icient of the selected

module Voc (According to the corresponding Module Data sheet).

If the reverse current which probably exceed the maximum fuses current of module passed through the module, the

modules must be protected by an equivalent current protection device. If the number of parallel is more than or equal to

2 strings, there must be equipped an over current protection device on each series of modules.

Parallel a er Series