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Black Box Forensics – Historical Power Quality Data Retrieval by LayerZero

LayerZero Power Systems Static Transfer Switches save all events into a timestamped "Black Box" for analysis and post-incident reconstruction. All events are documented in the internal "Black Box", and may be viewed as "summarized events" by users on the "Event Log" page on the eSTS GUI. Access to black box data is accessible both locally and remotely. Some events cause the action of posting an alarm, while other events cause the action of clearing an alarm. LayerZero Power Systems provides an ‘Alarms Troubleshooting Reference’ document which provides a list of each alarm message, the urgency that it indicates, a description of what can cause that alarm, and a description of the steps to perform to troubleshoot the alarm condition. Examples of recorded events include:
  • Alarm set or cleared
  • User interface actions (GUI & web page selections)
  • Circuit breaker state changes
  • Source availability changes
  • Waveform capture triggers
  • SCR gating changes
  • Out-of-limit source quality detection
  • User login or logout activity
Full and complete event data is stored internally, and this data can be analyzed when needed by LayerZero engineers.

How LayerZero Improves Power Event Forensics

Traditional Post-Catastrophe Reconstruction Without LayerZero Technology
The LayerZero Approach: Black Box Forensics
Successive events are too far apart in time to be useful.
LayerZero captures events at 10 microsecond resolution, including pre-event and post-event data.
Event records tend to be vague and leave questions unanswered.
Each record provides a clear snapshot with enough context to guide root-cause analysis.
Records offer only a static snapshot — no data before or after the incident.
Waveform capture provides 3 cycles before and after each event, offering full diagnostic insight.
Some events are missed entirely.
All events are automatically captured and stored in solid-state memory for later access.
Root-cause often goes unresolved, leading to repeat failures.
The LayerZero "Black Box" enables engineers to perform true forensics and eliminate recurrence.
LayerZero Power Systems transforms power event logs from a mystery into a precise forensic record so that engineers can act decisively.

LayerZero Black Box Forensics GUI Overview

LayerZero Black Box
  View the eSTS GUI for the Event Log Select the Arrow To Start Log Navigation - Jump to a Specific Page Timestamp of Event Event Source Event Descriptions Log Navigation