DPR-400 User Manual Rev_01 Firmware V-1.0
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The unit has memory space sufficient for 7 oscillographic Comtrade records. Each record consists of 512
samples. Sampling rate and percentage of samples before CB trip are adjustable. Recorded variables
are;
- Waveforms of phase currents
- Waveforms of phase voltages
- Level values for the first 8 digital inputs
- Level values for the first 8 relay outputs
Below is a record with 5000Hz sampling rate and 50% pre trip ratio.
Oscillographic Comtrade Record
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