SOL-SC-2ST-0-DC-3MPPT-1101UD - String combiner box (SCB)

1140960

Application note 111730 provides a description of the type key for the Phoenix Contact SCBs. You can use the type key to identify the SCB that has been delivered to you and derive its equipment features. The application note is available in the “Down... Vezi mai mult

Application note 111730 provides a description of the type key for the Phoenix Contact SCBs. You can use the type key to identify the SCB that has been delivered to you and derive its equipment features. The application note is available in the “Downloads” area on the SCB product page at www.phoenixcontact.com.

For Europe, HD 60364 Part 7-712 prescribes the following: PV fuses must be used in photovoltaic systems where more than two PV strings connected in parallel are installed per MPP tracker. This requirement applies because photovoltaic installations ha... Vezi mai mult

For Europe, HD 60364 Part 7-712 prescribes the following: PV fuses must be used in photovoltaic systems where more than two PV strings connected in parallel are installed per MPP tracker. This requirement applies because photovoltaic installations have to be short-circuit-proof.
 
In photovoltaic systems, the short-circuit current is almost in the nominal operating range. With one or two PV strings, the PV fuses do not have a protective function and even impair the system performance as they represent a potential source of error and also cause a slightly higher power dissipation.
 
With three or more PV strings connected in parallel, PV panels can be destroyed in the event of a double insulation fault due to a residual current or PV cables can be subjected to loads outside their nominal operating values. In this case, PV fuses make an important contribution to protecting the photovoltaic system and preventing downstream personal injury and damage to buildings.
The manufacturer’s data sheet provides information on the reverse current capacity of PV panels and the maximum fuse protection required for them.
 
Photovoltaic systems with DC power optimizers (e.g., from SolarEdge) are an exception. In some cases, power optimizers with up to three PV strings connected in parallel can prevent residual currents in the PV cables or PV panels. In this case, the use of PV fuses can be avoided. Please also observe the information provided by the power optimizer manufacturer.

To reduce the cable losses of the photovoltaic system, larger cable cross-sections are required.
 
Phoenix Contact SCBs with SUNCLIX DC connectors enable the connection of cables with different cross-sections without tools. For some of these SC... Vezi mai mult

To reduce the cable losses of the photovoltaic system, larger cable cross-sections are required.
 
Phoenix Contact SCBs with SUNCLIX DC connectors enable the connection of cables with different cross-sections without tools. For some of these SCBs, cable cross-sections greater than 6 mm² can be connected as standard. For the remaining SCBs with SUNCLIX DC connectors, connectors for a cable cross-section of up to 6 mm² are enclosed for the DC output side by default.
However, connectors that are designed for larger cable cross-sections can also be used for these items in some cases. As a rule, the space at the connection area of the SCB is sufficiently sized for this.
 
The information on the maximum connectable cable cross-section of the SCB can be found in the technical data for the item in the “Connection data” area. The matching connectors can be found in the “Accessories” area on the product page.

Thanks to the patented SUNCLIX release mechanism, the connectors can be easily released and disconnected using a standard bladed screwdriver. To do this, the screwdriver must be inserted into one of the openings of the connector and the connector can... Vezi mai mult

Thanks to the patented SUNCLIX release mechanism, the connectors can be easily released and disconnected using a standard bladed screwdriver. To do this, the screwdriver must be inserted into one of the openings of the connector and the connector can then be removed. This easy release mechanism also works if the connectors are positioned tightly in the SCB connection area.

Phoenix Contact SCBs have housings made from fiberglass-reinforced polycarbonate or polyester. The housings have a particularly high level of resistance and meet the IP65 degree of protection. However, the IP tests carried out in accordance with DIN ... Vezi mai mult

Phoenix Contact SCBs have housings made from fiberglass-reinforced polycarbonate or polyester. The housings have a particularly high level of resistance and meet the IP65 degree of protection. However, the IP tests carried out in accordance with DIN EN 60529 for the SCB housing are only comparative tests and are used to classify properties. They only take a few minutes and cannot simulate any real installation situation.
Long-term exposure to UV radiation with temporary peak intensity may also affect SCB components. For installation in unprotected outdoor areas, a canopy should be installed above the SCB.
Suitable canopies can be found in the “Accessories” area for the item.

Compatible Phoenix Contact SCBs for this application are marked with the addition “EQ” in the item designation.
These SCBs connect the PV strings per position to one potential internally, integrate the surge protection via branch wiring, and then ... Vezi mai mult

Compatible Phoenix Contact SCBs for this application are marked with the addition “EQ” in the item designation.
These SCBs connect the PV strings per position to one potential internally, integrate the surge protection via branch wiring, and then split the PV strings again. The output cables on the SCB must have the same cross-section and the same cable length. In addition, each conductor connected to the SCB should, in the event of a fault, either be able to carry the entire short-circuit current per DC circuit or be protected by fuses of operating class gPV.

Thanks to the spring connection technology, no special tools are required for connecting SUNCLIX DC connectors.... Vezi mai mult

Thanks to the spring connection technology, no special tools are required for connecting SUNCLIX DC connectors.