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Appendix A Specifications
Appendix A-2 TESLA LITE User Manual D03283R01.10
Recording and Logging
Transient Fault Record length 10 seconds 0 to 1 sec pre-trigger time
Dynamic Swing Record length900 seconds to 15 minutes 1 sample per cycle,
0 to 60 secs pre-trigger time
Event Logging 250 Events in the regular log, up to 1000 events per day
in long trend log Long term event logging is part of the
trending function.
Record Storage Up to 150 records
Trending
Available trend channels Any of the recorder’s existing configured analog chan-
nels (input or calculated) can be trended. Evaluated phasor magnitude and angle
quantities will be recorded as separate
channels.
Accumulation mode Minimum, maximum, average, damped or undamped.
Sample Interval User selectable sample interval from 10 seconds to 1
hour in 1 second increments. All channels produce trend data simulta-
neously at the selected rate.
Maximum number of
channels Up to 45 channels can be trended simultaneously. A channel with multiple accumulation
modes is treated as multiple channels
(e.g. the trending of minimum, maximum
and average readings of a selected input
would require 3 trend channels).
Trend storage The recorder can store 15 days of data from each trend
channel, regardless of the number of configured trend
channels. This is a non-configurable parameter.
Channels and Triggers
Analog Inputs High and low threshold, positive and negative rate of
change, harmonic level, THD level, sags, swells All triggers have independent controls for
delay, logging, transient or swing record
initiation, alarm contact activation and
cross triggering.
Summations High/low threshold, +/- rate of change 2 or 3 input channels
Positive Sequence High/low threshold, +/- rate of change
Negative Sequence High level
Zero Sequence High level
Watts/Vars High/low threshold, +/- rate of change
Frequency High/low threshold, +/- rate of change
Impedance Positive sequence circle
External Inputs (digital) Rising edge, falling edge or both
Logic Rising edge, falling edge or both
Fault Locator Triggered by internal or external events
Sags and Swells Sag and swell detection can be enabled on any analog
input channel configured as a voltage.
Interface & Communication
TESLA LITE Power System Recorder