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Chapter 3   

Module Electrical Connection Guidelines 

The  electrical  connection/grounding  must  meet  related  regulations/standards  of  the 
installation site or country and must be installed by a qualified installer. 
 
Use  series  or  parallel  connections  for  the  design  of  connections  between  modules  in 
accordance with the user's requirements for system power, voltage, or current. 

 

Each Module is equipped with a junction box and connector with a certain level of water/dust 
resistance  and  the  junction  box  is  equipped  with  two  cables,  one  positive  and  the  other 
negative.  Two  Modules  can  be  connected  in  series  by  connecting  the  positive  cable  of  a 
connector  to  the  negative  cable  of  the  other  connector;  similarly,  two  Modules  can  be 
connected in parallel by connecting their positive (or negative) connectors. 
 
Incorrect connection or loose connection may cause electric arcs or electric shocks, damage 
equipment, or cause fires. Please inspect and make sure that all electrical connections are firm 
and fixed (the connections of the connectors should be firmly locked in place). 

 

The  maximum  voltage  in  series  connection  of  modules  is  the  total  voltage  of  all  modules. 
Please  note  that  the  maximum  voltage  in  series  connection  cannot  exceed  the  Module's 
maximum  permissible  voltage  (the  maximum  permissible  voltage  of  the  AUO  Photovoltaic 
Module is 1,000 VDC, as specified on the back of the Module). Similarly, the maximum current 
in parallel connection of modules is the total current of all modules. 
 
The output and voltage of the Module will exceed the rated values when operating under low 
temperatures (<25°C). Consider the lowest possible ambient temperature of the year at the 
installation  site  and  use  the  open-circuit  voltage  temperature  coefficient  to  calculate  the 
maximum  number  of  modules  allowable  for  series  connection.  The  reference  calculation 
formula is as follows: 
Maximum  system  voltage/module  open-circuit  voltage  *  [1  +  module  open-circuit  voltage 
temperature coefficient * (lowest ambient temperature of the installation site -25)] 
 
The electrical connection of the module/system must be conducted with a dedicated cable for 
solar photovoltaic systems with minimum requirements as follows:   
1.

 

PV1-F or PV Wire cable standards 

2.

 

The cross section of the cable must be greater than 4 mm

2

 (or 12AWG) 

3.

 

The rated voltage of the cable must exceed 1,000 VDC 

4.

 

The  cable  materials  must  be  suitable  for  outdoor  use,  insulated,  and  sunlight  and 
ultra-violet resistant. 

5.

 

The applicable temperature range of the cable must be at least -40°C to +90°C. 

 
When connecting cables, the minimum bend radius of the cable must be greater than 5 times 
the cable diameter, as illustrated in Figure 8. 

Summary of Contents for PM060 series

Page 1: ...ltaic Module Installation AUO Photovoltaic Module Installation AUO Photovoltaic Module Installation AUO Photovoltaic Module Installation Manual Manual Manual Manual Version 2 0 Version 2 0 Version 2 0 Version 2 0 ...

Page 2: ...le Installation Guidelines 2 1 Module Installation Methods 2 1 1 Bolted Installation 2 1 2 Clamp Installation Chapter 3 Module Electrical Connection Guidelines 3 1 Module Grounding Method 3 1 1 Bolted Grounding 3 1 2 Using Certified Grounding Device for Grounding 3 2 System Grounding Method Chapter 4 Maintenance Guidelines 4 1 Cleaning Modules 4 2 Module Appearance Inspection 4 3 Module Connection...

Page 3: ... THE CLIENT DOES N IF THE CLIENT DOES N IF THE CLIENT DOES N IF THE CLIENT DOES NOT FOLLOW THE INSTAL OT FOLLOW THE INSTAL OT FOLLOW THE INSTAL OT FOLLOW THE INSTALLATION MANUAL AND AL LATION MANUAL AND AL LATION MANUAL AND AL LATION MANUAL AND ALL L L L APPLICABLE LAWS FOR APPLICABLE LAWS FOR APPLICABLE LAWS FOR APPLICABLE LAWS FOR THE INSTALLATION OP THE INSTALLATION OP THE INSTALLATION OP THE I...

Page 4: ...llow the packaging of the Module to sustain damage or falls the Module packaging must be stored in a dry and ventilated area sheltered from the rain Please refer to the printed instructions on the external packing box for the restriction on the number of stacks of the package Before installing the Module it is recommended not to open the Module packaging or remove the Module from the original pack...

Page 5: ...urrent of the Module is measured under standard testing conditions Under actual outdoor conditions the voltage and current may exceed the rated value under standard testing conditions the environment and ambient temperature at the site of the Module will affect the electrical characteristics of the Module for instance reflected sunlight from the snow or low temperature 25 C would increase the outp...

Page 6: ...the power output and safety of the Module The Module operates normally between 40 C to 85 C Please consider the average monthly high and low temperatures of the installation site when installing the Module and conduct installation procedures within a temperature range safe for humans The mechanical loading capacity e g wind pressure or snow pressure of the Module shall be in accordance with requir...

Page 7: ... Module The laws and regulations of the installation site or the country shall be followed when installing the Module Use appropriate electrical components such as grounding components circuit breakers or fuses ...

Page 8: ...and achievable load of the Module Please prevent shading or coverage of the Module by any substance such as snow or flood at its lowest level to the ground during installation in accordance with the environment and climate conditions of the installation site In addition the junction box of the Module must be installed at an elevated position Do not install the junction box at a low position During...

Page 9: ...rated in Figure 2 The PM060 and PM072 series modules require the use of M8 stainless steel bolts use only flat washers and spring washers 16mm in diameter to prevent mechanical interference caused by oversized washers on the inner edges of the external Module frame and stainless steel nuts to attach the Module onto the racking system the attachment method is illustrated in Figure 3 Certain models ...

Page 10: ...dule Data Sheet for detailed quantity size and position of mounting holes Figure 3 Mounting Hole Installation Method NOTICE The PM060 and PM072 series modules require the use of M8 stainless steel bolts use only flat washers and spring washers 16mm in diameter to prevent mechanical interference caused by oversized washers on the inner edges of the external Module frame and stainless steel nuts to ...

Page 11: ...installer can also be used for installation and clamp AUO does not provide related clamps Use at least 4 clamps in accordance with the direction of installation of the Module and attach the Module symmetrically onto the racking system the attachment method of the clamp is illustrated in Figure 5 the clamp s position on the long frame is illustrated in Figure 6 the clamp s position on the short fra...

Page 12: ...dule 5 400 Pa on the front 2 400 Pa on the back 2 400 Pa on the back 2 400 Pa on the back 2 400 Pa on the back Clamp range D1 Clamp range D1 Clamp range D1 Clamp range D1 D2 clamp range allowable for clamps D2 clamp range allowable for clamps D2 clamp range allowable for clamps D2 clamp range allowable for clamps ਖਖ Module Series Module Series Module Series Module Series D1 D1 D1 D1 D2 D2 D2 D2 PM...

Page 13: ...PM060 series 0 122mm 4 80 in Figure 6 Position of Clamps on the Long Frame Maximum sustainable static mechanical load of the Module Maximum sustainable static mechanical load of the Module Maximum sustainable static mechanical load of the Module Maximum sustainable static mechanical load of the Module 2 400 Pa on the front 2 400 Pa on the front 2 400 Pa on the front 2 400 Pa on the front 2 400 Pa ...

Page 14: ...the Module s maximum permissible voltage the maximum permissible voltage of the AUO Photovoltaic Module is 1 000VDC as specified on the back of the Module Similarly the maximum current in parallel connection of modules is the total current of all modules The output and voltage of the Module will exceed the rated values when operating under low temperatures 25 C Consider the lowest possible ambient...

Page 15: ...roperly to ensure the safety of personnel and the work environment Please connect grounding in accordance with IEC Standards or the electrical codes and regulations of the site country of installation to ensure that the Module is correctly grounded The grounding holes on the Module frame are marked with grounding symbols as indicated in Figure 9 the quantity size and position of grounding holes ar...

Page 16: ...ected to the Module frame when conducting grounding e g if the frame is aluminum alloy the insulated and anti corrosion anodic oxide coating on the aluminum alloy surface must be scrapped off for the grounding device to allow contact with the internal aluminum alloy in order to provide grounding The grounding of the Module can be conducted through the recommended methods as follows 3 1 1 3 1 1 3 1...

Page 17: ...unding device and the manufacturer must ensure the grounding performance of the grounding device 3 2 System Grounding Method To achieve optimal system performance it is recommended to ground the negative or positive pole of the solar photovoltaic system array Failure to correctly ground the system will lower system performance and void the AUO Photovoltaic Module s limited warranty on output Pleas...

Page 18: ...d shading the surface of the Module It is recommended to perform cleaning operations in the early morning evening or cloudy periods to lower the risks of electric shocks or burns When cleaning use soft cloths or sponges with soft cleaning agents do not use abrasive corrosive or acidic alkali cleaning agents and water close to the temperature of the Module to prevent thermal shocks from damaging th...

Page 19: ...nspection items are as follows Check whether the module installation grounding components are securely fastened for signs of corrosion Check whether electrical connections are securely and seamlessly connected and for any irregularities Check for damage to the cables and whether they are exposed or immersed in water Check whether the junction box is damaged or burnt and other irregularities such a...

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