Suojausparisto
Suojausparisto is a Finnish term used in electrical engineering to denote a protective battery system. It can refer to a battery bank and the associated control and power electronics that supply backup power to safety-critical circuits or protective functions during main power loss. In practice, suojusparisto may serve as energy storage for emergency shut-down systems, fault indication, monitoring, and protection relays, ensuring that essential safety operations remain operable for a finite period.
Components typically include a battery unit (lead-acid, Li-ion, or other chemistries), a charging/discharging controller or battery
Operation: When the main supply fails or voltage drops outside safe limits, the suojusparisto supplies power
Applications: industrial automation, railway and public transport systems, process industries with mandatory safety interlocks, emergency lighting
Safety and standards: Installations follow local electrical codes and safety standards; maintain proper ventilation and battery
See also: backup power supply, uninterruptible power supply, battery management system, emergency power.