Photovoltaic dc surge arrester

What is surge protection for photovoltaic systems?

Protective devices for photovoltaic systems differ from surge protection for linear direct currents. Our application-specific portfolio of surge protective devices for photovoltaic systems offers the right components from power supply to the protection of signal and data lines.

What is a pluggable type 1 lightning arrester?

The pluggable type 1 lightning arrester from the Safe Protection Plus product family provides reliable system protection for two-position, isolated DC voltage systems with 1,000 V DC. With an optimized design and pluggability, it features advantages for installation and maintenance.

Do PV current sources need a disconnector?

Therefore, PV current sources not only require larger PV switches and PV fuses, but also a disconnector for the surge protective device which is adapted to this unique nature and capable of coping with PV currents . SPDs installed on the dc side must always be specifically designed for dc applications.

What is a surge protective device (SPD)?

Surge Protective Device (SPD): A protective device for limiting transient voltages by diverting or limiting surge current; it also prevents continued flow of follow current while remaining capable of repeating these functions and is designated as follows:

What causes a PV system to overvoltage?

The overvoltage depends on the setup conditions of each PV system and the wirings. PV systems are exposed in large open spaces, typically in fields or on the tops of buildings. Charged rain clouds that accumulate over such open fields have the propensity to release the charge in the form of lightning.

What type of surge protection is required for DC cabling?

Type II surge protection can be used, provided the separation distance is maintained (usually > 0.7 m to 1 m). If the separation distance is not maintained, a surge protection Type I for DC cabling is required. This is a common design for which surge protection Type II must be provided for DC cabling.