6 Notification Appliances—SCM Synchronization (Sync) Control Module
Inrush current refers to current that exceeds the nominal voltage when the
strobe is first turned on. Once the strobe is turned on, it flashes one flash
per second. Peak current indicates the current rising above the nominal
voltage right after each strobe flash.
To calculate maximum inrush or peak current:
1.
Use the sync strobe current requirement tables in the SL and SLM
Series Synchronized (Sync) Strobe Signals and SHW Series
Synchronized (Sync) Strobe Signals Technical Bulletins to determine
the highest value of rated inrush current or rated peak current
(whichever is higher) for an individual sync strobe.
2.
Multiply this value by the total number of sync strobes on the circuit.
3.
Add the inrush or peak currents from the sync control module and any
other devices on that circuit. Include any required safety factors.
Note: The time duration of the maximum inrush or peak current is
2 milliseconds for SL and SLM, and 6 milliseconds for
SHW models.
Peak and Inrush
Current