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Lay cables carefully to protect against damage from:

• Direct environmental factors, such as precipitation

• movement (e.g. from wind)

• Indirect environmental factors, e.g. snow or ice,

which slip down behind the modules, and

• Chaffing on the insulation due to the cable

moving (e.g. from wind or ice).

9.3

9.4

Potential equalisation (earthing) of module

Lightning protection

frames

NOTE

WARNING!

• Local regulations may specify potential

Absence of or inadequate lightning protection.

equalisation (earthing).

Risk of fire or electric shock!

• When earthing the module frame, establish a safe

• Leave the planning and installation of the external,

electrical connection to the earth potential or

and if required internal, lightning protection to be

earthed sub-structure.

carried out by qualified technicians at all times.

• Observe the requirements and recommendations

• It is essential to integrate an arrestor for connecting

of the inverter manufacturer, as well as insurance

the lightning rod with the lightning protection. This

policies.

ensures the safety and reliability of the lightning pro-

• The module frames are made of aluminium. When

tection as well as the photovoltaic system.

mounting onto other materials, take suitable

measures to prevent electric corrosion, e.g. by

• Do not under any circumstances include the module

frame or its earth as an active part of the lightning

using a coating.

protection (e.g. as a lightning arrestor).

NOTE

Potential equalization does not serve as lightning

If you earth the module frame, the only task of this

protection. Lightning protection may be necessary

earth is the potential equalisation between the mod-

in addition to potential equalization.

ule frame and the supporting structure.

9.4

Lightning protection

Details of mechanical mounting

WARNING!

10.1

Aligning the mounting profiles

Absence of or inadequate lightning protection.

Risk of fire or electric shock!

10.1.1 Permissible alignment

• Leave the planning and installation of the external,

and if required internal, lightning protection to be

carried out by qualified technicians at all times.

• It is essential to integrate an arrestor for

connecting the lightning rod with the lightning

protection. This ensures the safety and reliability

of the lightning protection as well as the

photovoltaic system.

Fig.3

Permissible alignment of mounting profiles

• Do not under any circumstances include the

a, b: Parallel profiles for mounting; c: Parallel, aligned

module frame or its earth as an active part of the

fingers of a mounting system.

lightning protection (e.g. as a lightning arrestor).

_______________________________________________

10.1.2 Impermissible alignment

NOTE

If you earth the module frame, the only task of this

earth is the potential equalisation between the

module frame and the supporting structure.

Fig.4

Impermissible alignment of mounting profiles

a: Profiles not parallel to one another; b: Profiles neither par-

allel nor perpendicular to the module edges; c: The profile

Page 10/20

ends for the sides of a module are not connected.

GID AS022b

GID AS023b

9.4

Lightning protection

9.5

Parallel and serial connection

PV modules of the same type can be connected in parallel.

WARNING!

The PV modules in this series are fundamentally designed

for series connection.

Absence of or inadequate lightning protection.

• Only use PV modules of the same type and output

Risk of fire or electric shock!

for parallel connection. Take measures for over-

• Leave the planning and installation of the external,

current protection (e.g. line fuses) if necessary. Never

and if required internal, lightning protection to be

exceed the specified reverse current loadability of

carried out by qualified technicians at all times.

the PV modules. Maximum number of module strings

10.2

Clamp mounting for modules with standard

that are allowed to be switched in parallel: 2 (fuse

• It is essential to integrate an arrestor for connecting

rating / (short-circuit current x1.25)+1)

frames

the lightning rod with the lightning protection. This

• Make sure that only PV modules with the same

ensures the safety and reliability of the lightning pro-

amperage (Impp) are interconnected for series con-

tection as well as the photovoltaic system.

10.2.1 Arranging the clamps

nection and make sure that the voltages of strings

• Do not under any circumstances include the module

connected in parallel are the same. Even at low tem-

■

Permissible arrangement

frame or its earth as an active part of the lightning

peratures, never exceed the maximum permissible

protection (e.g. as a lightning arrestor).

system voltage of the PV modules. Maximum number

of PV modules that are allowed to be switched in

series: maximum system voltage / (open circuit

NOTE

voltage x 1.25), with respect to the temperature

If you earth the module frame, the only task of this

coefficient.

earth is the potential equalisation between the mod-

• Make sure that the number and connection of the

ule frame and the supporting structure.

PV modules match the electrical values specified by

GID AS024a

the devices connected to the photovoltaic system.

Fig.5

55Permissible clamp arrangement for framed

• Make sure that the polarity is correct.

Details of mechanical mounting

modules

a: Symmetrical clamping on the long sides, b: Asymmetrical

Details of mechanical mounting

clamping on the long sides (acceptable for certain load

10.1

Aligning the mounting profiles

levels), c: Symmetrical clamping on the short sides.

10.1

Aligning the mounting profiles

10.1.1 Permissible alignment

■

Impermissible arrangement

10.1.1 Permissible alignment

GID AS025b

Fig.6

55Impermissible clamp arrangement for framed

Fig.3

Permissible alignment of mounting profiles

Fig.3 Permissible alignment of mounting profiles

modulesPermissible clamp arrangement for

a, b: Parallel profiles for mounting; c: Parallel, aligned

framed modules

a, b:

Parallel profiles for mounting; c: Parallel, aligned

fingers of a mounting system.

Impermissible clamp arrangement for framed modules

fingers of a mounting system.

(1)a: Missing clamps, b, c: Clamping on both short and long

10.1.2 Impermissible alignment

sides.

GID AS069b

Fig.4

Impermissible alignment of mounting profiles

Fig.7

Impermissible clamp arrangement for framed

Fig.4 Impermissible alignment of mounting profiles

modules (2)

a: Profiles not parallel to one another; b: Profiles neither par-

a :

Profiles not parallel to one another;

allel nor perpendicular to the module edges; c: The profile

d: Protruding clamps, e: Opposing clamps have different

ends for the sides of a module are not connected.

b :

Profiles neither parallel nor perpendicular to the

distances to the module corners, f: Asymmetrical clamps on

module edges;

the short sides.

The profile ends for the sides of a module are not

connected.

10.2.2 Clamp dimensions

10.2

Clamp mounting for modules with standard

Observe the following information for clamp lengths and

frames

depths.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected]

Page 10/19

GID AS022b

GID AS023b

Quick Reference Manual Rel. 4.7, 08/2020, EN

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