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Last revised: December 2011

                                                                                                                                 

3

 

PM220P00_250 
PM240P00_250 

250 

37.83 

8.75 

30.08 

8.26 

 
A PV module may produce more current and/or voltage than reported at STC. Sunny, cool 
weather  and  reflection  from  snow  or  water  can  increase  current  and  power  output. 
Therefore, the values of Isc and Voc marked on module should be multiplied by a factor of 
1.25 when determining component voltage ratings, conductor capacities, fuse sizes, and size of 
controls connected to PV output. An additional 1.25 multiplier may be required by the NEC 
(National  Electric  Code)  for  sizing  fuses  and  conductors  as  described  in  the  NEC  section 
690-8. 
 

Performance of PV Modules 

A  PV  module  generates  current  which  is  proportional  to  the  intensity  of  solar  radiation, 
while the voltage varies with cell temperatures. 
 
Note  that  the  cell  temperature  is  usually  higher  than  the  environmental  temperature.  The 
increase in the temperature of cell compared to the air temperature depends on the thermal 
characteristics of the module. 
 
In summary, depending on solar radiation, the temperature of the cells and the equipment to 
which they are connected, a PV module will generate a different current and voltage levels, 
which result in a different power output. 

 

Grounding

 

BenQ Solar PV modules have a clearly marked grounding hole on each side of the frame for 
inserting  the  ground  contact.  The  grounding  screw  and  bolt  are  separately  used  from  the 
mounting parts of the module. 
 
The recommended assembly is shown in Figure 1. Note that the frame is fully insulated by 
anodizing. Please make sure the grounding screw removes the anodizing on the surface of the 
grounding holes, or scratch off the anodizing before the grounding connection is made. If the 
material of support structure is different with the material of frame (aluminum), the Insulation 
between them is required. Should the support structure be a non conductor, a cable must be 
connected by means of a suitable fastening system. The fastening system will be joined to a 
cable with a minimum 2.5mm

2

 cross section, together with all the grounding conductors from 

each module. Please make sure that each module is grounding properly.   
 

 
 
 
 
 
 
 
 
 

Figure 1 Recommended grounding connection 

 

Cable 

Screw 

Spring washer 

Cup washer 

Ground

Ground

Ground

Ground    

Содержание PM220P00

Страница 1: ...B Be en nQ Q S So ol la ar r P Ph ho ot to ov vo ol lt ta ai ic c M Mo od du ul le es s I IE EC C E ET TL L PM220P00 PM240P00 Installation Guide for Users...

Страница 2: ...ncluding but not limited to installation application or removal by any party other than a qualified personnel non observance of BenQ Solar s installation users and or maintenance instructions repair o...

Страница 3: ...modules Damaged modules broken glass torn back sheet broken j boxes broken connectors etc can be electrical hazards as well as laceration hazards Contact with damaged module surfaces or module frame c...

Страница 4: ...iation the temperature of the cells and the equipment to which they are connected a PV module will generate a different current and voltage levels which result in a different power output Grounding Be...

Страница 5: ...uld void the warranty Use corrosion proof fastening materials For PM220P00 and PM240P00 modules four stainless steel bolts with nuts washers and lock washers are recommended per module Only the existi...

Страница 6: ...Last revised December 2011 5 BenQ Solar Figure 2 Installation of module Figure 3 Effective mounting area clamping...

Страница 7: ...ge or adjustment on the cable of Junction Box D D D DO O O O NOT NOT NOT NOT disconnect cable by yourself Important The cable must not be bent or crushed on the direct exit of the cable screw joint A...

Страница 8: ...the southern hemisphere The module must be installed so that air can freely circulate around it The cells working temperature will thus be reduced and consequently the module s performance will be en...

Страница 9: ...the PV conductor which cross section is 4 mm2 External connection boxes will be used to enable greater cable cross section area for long distance transmission The modules are qualified for the applic...

Страница 10: ...g Inspection of connections and cabling Perform preventive maintenance every 6 months carrying out the following operations Check the tightness and condition of the connection cable junctions Check th...

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