Thytronic NA011 - Info; Protections Trip; Self-Test; Oscillography - DFR

MEASURES, LOGIC STATES AND COUNTERS
47
NA011 - Manual - 05 - 2022
• Control function trip (CB switch OFF-ON or ON-OFF).
One hundred events are recorded into a circular FIFO (First In, First Out) buffer (Read \ Events \ Info
menu).
[1]
Following information are stored in every record:
Read \ Events \ Info menu
• Event stored
[2]
• Last Event
Read \ Event \ Event menu
• Event number (E-Number)
• Event Cause (E-Cause)
• Date and time (E-Year)
• Date and time (E-Year)
• Date and time (E-Month)
• ...
• Date and time (E-Millisecond)
Info
• Code NA011-a
• Serial ...... (Serial number)
• Firmware release ...... (eg: 2.00)
• Nominal freq. (eg: 50 or 60 Hz)
Protections trip
• Protections trip (eg: Trip I>>)
Self-test
Following information are available (Read \ Self test \ Info menu):
• Type
• Self-test cause
• Self-test latch
The relay self-test function classifies relay operational anomalies according to three levels:
- MINOR ANOMALY: The device continues to function within the possible limits with the protective
devices activated;
- MAJOR ANOMALY: Operation of the device may be corrected by the operator by resetting the
initial (default) configuration and hence the desired settings;
- FATAL ANOMALY: All logic and protective functions are inoperative and the relay must be returned
to the factory.
The internal self-test function is capable of detecting the following anomalies and indicating them
by means of messages:
- defective auxiliary power supply (FATAL ANOMALY);
- output relay coil breakage (FATAL ANOMALY);
- alteration of the calibration data stored in EEPROM memory (FATAL ANOMALY);
- alteration of the parameters (threshold setting, times, relays… etc.) in EEPROM memory (MAJOR
ANOMALY);
- alteration of the data (counters, records, ...etc.) in EEPROM memory (FATAL ANOMALY);
Upon detection of at least one of the above mentioned anomalies, the output relay programmed for
Self-test is switched and the information is recorded (latched).
Oscillography - DFR
[3]
Upon programmable trigger, the fault records are recorded in COMTRADE format d; the sampled
measures (64 sample per cycle) are stored in a circular shift memory buffer.
The fault record are self-triggered; they are stored in sequential order up the allocated memory is
used up after which the oldest memory is overwritten.
An operating procedure example for the digital fault recording is illustrated inside the ThyVisor sec-
tion.
Following parameters are user-programmable:
[4]
• Pre-trigger time (0...63 T where T = number of power cycles; Example, with settings T=4 the pre-trig-
ger duration is 80 ms with f = 50 Hz).
• Selected sampled quantities.
Note 1 The newest event data are stored inside the event addressed by the Last event parameter (1...100)
Note 2 Counter is updated at any new record; it may be cleared by means ThyVisor
Note 3 The Programmable Logic Controller requires a licence; to purchase it please contact Thytronic.
Note 4 As all settings, the settings take effect only after sending the Store command
trigger.ai
Trigger
Time
pre-trigger
record length
post-trigger
0...63 T