Fault summary, Oscillographic data acquisition – Basler Electric BE1-BPR User Manual
Page 92
4-40
BE1-BPR Functional Description
9272000990 Rev J
O (A,1-15) =0111101000011001
50 TARGETS=NONE
IA = 1.25 KA
IB = 38.31 KA
IC = 1.28 KA
IN = 37.13 KA
FAULT CLEARING TIME = 0.164 SEC
Detailed information about specific faults is available through the communication ports by using the FLOG
command. Entering FLOGx, where x is the fault number, provides a detailed summary of fault x. The
information listed below is provided in each fault summary.
Fault Summary
•
Fault timing is provided to millisecond resolution.
•
Fault current for each phase is provided.
•
Status of all inputs and outputs at the time the fault occurred.
•
Fault clearing time. (Defined as the time from when the fault was triggered to when the instantaneous
fault detector(s) drop out.)
An example of a fault log report is shown below:
FAULT LOG #125
DATE =11/25/07
TIME =12:26:41.653
LOGIC =BFL1
I(1-7)=0111000
T(1-6)=100000
F(1-3)=111
O(A,1-15)=0111101000011001
50 TARGETS= B,N
IA =1.25 KA
IB =38.31 KA
IC =1.28 KA
IN =37.13 KA
FAULT CLEARING TIME = 0.164 sec
An oscillographic data record is triggered when the trigger logic defined by the TRIGGER command
becomes true. Typically, a fault record is taken whenever a contact input is recognized that could trigger
the BFO. The fault trigger is reset and rearmed after the TRIGGER definition becomes false.
Oscillographic Data Acquisition
The fault data recorded is as follows:
•
Fault log number (1 to 255).
•
Date and time of the start of fault data to one millisecond resolution.
•
Twenty cycles of sampled data (four cycles pre-fault and sixteen cycles post-fault) consisting of the
A/D data values of phase and neutral currents and status of all contact inputs and outputs, virtual
outputs and timer/counters. The fault data sampling rate is twelve samples per cycle. Analog data is
bandwidth limited to 200 Hz because of the anti-aliasing low-pass filter.
•
Fault data format follows the COMTRADE Standard (IEEE C37.111-1991: Common Format for
Transient Data Exchange (COMTRADE) for Power Systems).