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module. Do not press the cable hard. To secure the

cable to the rack in the proper way, specially

designed UV-resistant coils and cable clips must be

used. Avoid direct sunlight and water soaking to the

cable.

 Keep the connectors dry and clean and make sure

that the nuts on the connectors are tightened before

connecting them. Do not connect the connectors

when they are damp, contaminated or in other bad

conditions. Avoid exposing connectors to direct

sunlight and soaking in water. Avoid the connectors

falling on the ground or the roof. Do not plug or

unplug the connectors when the PV module is in

live state. When it is necessary to remove the

connectors, ensure that the PV module is not in

working condition and that professional unlocking

tools and safety measures are used. Direct dragging

and pulling is forbidden.

 The junction box of the PV module contains bypass

diodes connected in parallel to the string of the PV

module. The bypass diode in the junction box

prevents module degradation due to shading or

covering. Refer to the junction box diode

specification provided in the relevant product

datasheet for more details. When the localized hot

spot phenomenon occurs in the PV module due to

partial shading or coverage, the diode in the

junction box will start to work, so that the module

current will no longer flow through the hot spot cell,

so as to limit the heat and loss of the PV module.

When a diode failure is suspected or found, please

contact Chint Solar and do not attempt to open the

junction box cover.

6.3 Grounding

The PV modules are designed with an anodised,

corrosion-resistant aluminum alloy frame as a rigid

support. To ensure safety and to avoid lightning strikes

and electrostatic damage to the PV modules, the PV

module frame must be earthed. The earthing device

must be in full contact with the interior of the

aluminum alloy of the frame, penetrating the surface

oxide film.The following is the specific grounding

method, as shown in Fig. 15.

Fig. 15 Grounding the aluminum frame with copper wire

 The grounding requirements must be checked in

accordance with the applicable regulations and

standards before work is started.

 Use the marked 5.5 mm grounding holes to ground

the anodized frame. Use one M5 nut, two M5 cut

washers, one M5 plain washer, one M5 spring

washer, and one M5 bolt and the copper wire. All

nuts, bolts, and washers shall be of type M5 and

made of stainless steel (Fig. 15).

 Insert the bolt through the cup washer and wrap the

copper wire around the bolt. (Note that the copper

wire cannot be attached directly to the aluminum.)