12
The maximum number of components that can be connected in series must be calculated in
accordance with the requirements of the relevant regulations, the open-circuit voltage shall not
exceed the maximum system voltage value specified by the component (According to the safety
test of IEC 61730, the maximum system voltage of the SOLGLASS’s modules is DC1000V)
If reverse current may flow through the module exceeding the maximum fuse current of the
module, the module shall be protected by overcurrent protecting device that it has the same
specification. If the number of parallel connections is more than or equal to 2 strings, there must
be an overcurrent protection device on each string.
6.2
cable and connecting
In the design of cables and connections, assemblies, field connections use sealed junction
boxes of Class IP67 to provide protection against environmental impacts for conductors and
their corresponding connections, and to provide touchable protection for uninsulated parts. The
junction box has well-connected cables, wires and protective Class IP67 connectors. These
designs are convenient for connecting modules in series. Each module has two wires
individually connected to the junction box, one positive and one negative. The two modules can
be connected in series by inserting a positive terminal at the other end of a module wire into the
socket of the negative terminal of an adjacent component.
Field connection cables must meet the component's maximum short circuit current usage, and
SOLGLASS recommends that installers use only light resistant cables that meet PV DC
requirements in PV systems, with a minimum diameter of 4mm².
Minimum Standard for the cable
Testing Standard
Wire size
Temperature Rating
EN 50618:2014
4mm
2
-40
℃
to +85
℃
When the cable is fixed to the bracket, it is necessary to avoid mechanical damage to the cable
or module. Do not apply pressure to the cable. For cables that are secured in the proper way,
installer must use special light-resistant cable, wires and wire clips to fix the cable to the bracket.
Although the cable is light and water resistant, avoid direct sunlight and water immersion.
6.3 Connecting
Please keep the connector dry and clean. Make sure the connector nut is in a tight status before
connecting. Do not connect connectors when the connector is wet, soiled, or otherwise. Avoid
direct sunlight and immersion of connectors in water. Avoid connector landing on the ground or
roof.
The wrong connection could create an electrical arc and shock. Please check that all electrical
connections are reliable. Make sure all the connectors with locks are fully locked.
