Photovoltaic installations: components and solutions in the BOS
Solar energy is already the most efficient energy source in many markets and is expected to be the low-cost technology of choice in many more by 2030. Despite the impact and uncertainties caused by Covid-19, photovoltaic energy is expected to expand its current market share by a seven-fold increase in capacity and potential, according to a report done by DNV. Significant solar capacity growth was recorded in 2020 in China (49 GW), USA (15 GW), Vietnam (11 GW) and Japan (5 GW).
Which are the most critical components of a Balance of System (BOS)?
BATTERY ENERGY STORAGE SYSTEMS
It is an indispensable element in any photovoltaic installation, whether on-grid-connected or off-grid. There are two kind of inverters:
- string inverters, smaller inverters installed close to the PV panels
- central inverters, which centralize a larger number of PV panels.
Since the voltage for a single panel is too low, several panels are connected in series to provide an output voltage within the inverter’s working ratings (usually 1000-1500Vdc , with grid network output up to 800Vac).
A combiner box is composed of: Switch-Disconnector, protection against short circuits, surge arresters and, optionally, monitoring systems.
The switch disconnector must operate in accordance with the voltage, and guarantee a safe and effective load break. For short-circuit protection, fuses specific for this sector with high breaking capacity must be installed.
- Maximized performance
- High safety level
- Suitable for extreme environments
- Compact design
- Longer life
- Easy to install and maintain
|Modular ZFV / ZFC
Up to 65 A 1000 Vdc and 1500 Vdc
|S5 / S5M / S5N
Up to 3150 A 1000 Vdc – Up to 1800 A 1500 Vdc
Manual and motorized
|S6 / S6N / S6R
Up to 630 A 1000 Vdc – Up to 500 A 1500 VdcManual and motorized
|S5 / S6 Isolation only
Up to 3150 A 1500 Vdc
Telergon, leaders in specialized solutions for photovoltaic installations since 2006
Thanks to our wide experience and specialization in low voltage switchgear solutions, we have developed and manufactured specialized products in solar energy. We adapt to market trends and needs, and we are constantly researching and improving our products.Back to news