The fault recording device consists of management unit, recording unit and acquisition unit. The device receives the sampling data provided by the merging unit, receives the circuit breaker status of the intelligent terminal and various tripping and alarm signals from the protection device.

Fault recorder is mainly used for dynamic recording and fault analysis of generator, transformer, line and generator transformer unit (engine transformer unit).

The graphic analysis of fault recorder is an important part of fault recorder. The analysis software can view the waveform and support channel selection. The analysis software can view the waveform and support channel selection, waveform amplification and reduction and other basic functions. At the same time, routine analysis, line analysis and generator analysis are carried out.

So what should customers pay attention to when they purchase fault recorder?

It is necessary to provide the networking mode and communication protocol of fault recorder. The common communication methods are RS485 communication, RS232 communication and IEC61850 communication.

It is necessary to provide the secondary side rating and high frequency channel of analog voltage transformer and current transformer.

The number of switching values (normally open / normally closed passive air contacts) to be connected to the device.

Provide time synchronization.

Determine the size and color of fault recording screen.

These are some important information to be determined from the fault recorder manufacturer when purchasing the fault recorder.