Data Recording and Timestamping
Depending on the solution selected for arc flash protection, data recording can occur at various levels.
Arc Flash Protection Embedded in Electrical Protection Relay
When the arc flash protection is embedded in the electrical protection relay (PowerLogic P5 30 series or P3 Advanced), analog and event data are recorded and timestamped onboard the protection relay itself.
Arc Flash Protection Installed as an Autonomous Feature
With PowerLogic A125 / Arc V121, data must be relayed through another communicating device of the switchboard.
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This device should preferably be a communicating protection relay involved in the arc flash protection. This device should offer digital inputs for connection with PowerLogic A125 / Arc V121. In this case, event data is recorded and timestamped onboard the communicating protection relay (PowerLogic P5 20 series, P3 Standard, or MasterPacT MTZ).
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In case the protection relays installed in the switchboard cannot communicate, a communicating power meter equipped with digital inputs can be used to relay information from PowerLogic A125 / Arc V121. In this case, event data is recorded and timestamped onboard the communicating power meter (PowerLogic ION9000 or PM8000).
For the Arc Flash Protection application, time accuracy of ±1 ms is recommended to be able to analyze the phenomena, in particular for highly critical applications.
For a comprehensive overview of device recording and timestamping capabilities, refer to Data Recording and Time Synchronization Capabilities of EcoStruxure Power Connected Products.