IFA Brownout Detector
On this page you will find a record of the most recent drop in mains voltage resulting in a "Brownout".
- For a description of the system, see IFA Brownouts Description.
- To sign up to receive an alert via SMS, go to this page (local AU access only).
- See also the Mains Monitor plots, which shows the RMS voltages for the last 1 h and 48 h.
Notice this service is provided "on best effort only" (no guarantee of availability). The service will occasionally not be operational due to updates.
Last Brownout Time:
Last Brownout Values:
L1: Brownout Value=, Duration= s,
Minimum (one-period) RMS value= V
L2: Brownout Value=, Duration= s,
Minimum (one-period) RMS value= V
L3: Brownout Value=, Duration= s,
Minimum (one-period) RMS value= V
The brownout value corresponds to the number of full 50 Hz cycles missing. Values below ~0.5 will generally not be a problem for most equipment.
Last data update:
Note that sometimes the browser needs a forced refresh (Shift-F5) to update the graphs.
IFA Mains Monitor plots Signup for SMS alarm (local AU access only)
Brownout History: Graphs of second to last event
RMS level for Brownout detection: %
Minimum Brownout value for SMS alert:
Brownout Detector program run status:
Last page update:
Suggestions for improvement of this page are most welcome. Jørgen S. Nielsen, ISA
Last Modified 15 September 2025