Here is a detailed description, in Romanian, for the photovoltaic arrester Schrack Photec P C 1100V 20kA, without external links:
This device is a Type 2 (Class C) surge arrester (SPD), specially designed for the protection of photovoltaic installations operating at high voltages. Its main role is to protect the inverter and solar panels against overvoltages caused by indirect electrical discharges (lightning nearby) or grid switching.
Main Technical Specifications
- Maximum continuous working voltage ($U_{cpv}$): 1100V DC. It is ideal for systems with long strings of panels, where the no-load voltage can exceed the 1000V threshold.
- Rated discharge current ($I_n$): 20 kA (wave 8/20 µs). Represents the value the device can safely download multiple times.
- Maximum discharge current ($I_{max}$): 40 kA. It represents the maximum current limit it can handle once without instantly destroying itself.
- Protection level ($U_p$): $\leq$ 3.8 kV. This is the residual voltage reaching the equipment at the time of tripping.
- Configuration: System consisting of 3 modules (Y-connection), which provides complete protection between poles (+/-) and against earth (PE).
Advantages and Construction
- Modular Design: Cartridges are detachable (can be removed). If a module fails, you don't have to replace the whole unit, just the spent cartridge without disconnecting the cables.
- Optical Status Indicator: Each module has a control window. The green color confirms correct operation, and the red color signals that the module is burnt and must be replaced immediately.
- Mounting: Quickly installs on standard 35mm DIN rail in direct current (DC) panel.
- Safety: Includes an internal thermal separator that disconnects the device in case of overheating or malfunction, preventing the risk of fire in the panel.
This model is the standard choice for modern residential and commercial systems, being adapted to the new 1100V voltage standards (which replaced the old 1000V models for an increased safety margin).
Do you want us to check if the Voc voltage of your panels is within the 1100V limit of this device?
Reviews
Clear filtersThere are no reviews yet.