Monitoring emergency lighting system
- Energy distribution
- An undervoltage monitoring relay with a fixed switching threshold at 0.85% of the nominal voltage is needed for emergency lighting systems. Two changeover contacts are wanted for signalling.
- This device was used because it fulfils the VDE 0100-718 and VDE 0108-100 standards and is equipped with 2 changeover contacts.
- - Fixed threshold
- 2 contacts
- Fulfils VDE standard
This might be of interest for you
No entries found.
Re-cooling system monitoring
The overloading of the re-cooling systems in a data centre is prevented.
Power source switchover
When the voltage falls below 0.85 times the nominal voltage for longer than 0.5 seconds, the system must switch over from the normal power supply to the…
Building navigation lights
LED navigation lights on taller buildings and towers in the vicinity of airports should be monitored.
Voltage dip detection
Very short voltage dips cause some components in a heating control system to fail, while others continue to function. This interrupts the control circuit, and…
Burner process control
A temperature limiter is installed in the process controller of a burner. When it is triggered, a fault message should be sent and maintained after the power is…
Monitoring of the operating state of the exhaust fan. The fan has a high starting current; this may not influence the monitoring and may not lead to a…