EATON ELECTRICAL
47
Predictive Diagnostics
We suggest saving full data, including matrixes, twice per month. This is sufficient for historical data and
full data can be saved at any time by operator request, if needed.
Scroll setup parameters until
SET SAVE
appears.
Press
Enter
.
S-briEF
will appear. Use
keys to select
S-briEF
or
S-FULL
mode.
When done, press
Enter
.
Setting to Store Matrixes in Brief Mode:
This procedure sets the days between saving FULL PD data and setting a measurement number at a
chosen day, to be saved as FULL. All other measurements will be saved as BRIEF.
Scroll setup parameters until
ArCHdAtA
appears.
Press
Enter
.
on 15dAYS
will appear. Use
keys to select
the number of days for the full PRPDD
matrix storage. 15 days is the recommended setting.
Press
Enter
.
nrEAD-01
will appear. Use
keys to select
the number of measurements at the
selected day for the full PRPDD matrix storage. Suggest XX
When done, press
Enter
.
Pulse Width and Pulse Interval:
This procedure sets allowed PD pulse width and allowed time interval (or dead time) between two
consequent pulses. Pulse width is a helpful setting, allowing for the rejection of many industrial noises
(based on the fact that noise often produces a much longer pulse then PD). Time between pulse is
required to establish criteria, when a new pulse has appeared and when a signal is a continuation (tail) of
the previous pulse.
The setting
dI
sets allowed pulse WIDTH and
dP
required PAUSE between pulses. Both settings have a
choice of three settings 1, 2, and 3. As default,
dI=1
and
dP=3
are recommended.
Scroll setup parameters until
PLS PAr
appears.
Press
Enter
.
CH01
will appear. Press
Enter
.
dI-1dP-3
will appear. Use
to set the desired
value from 1-3 per each of the two parameters.
Press
Enter
. Use
keys to select another channel and repeat the process.
When done, press
Esc
.
dI
– sets the pulse width limit. The selections are:
1 – 640nS (recommended for RTD, IPDS, RFVS and RFCT sensors)
2 – 1280nS (may be used for RFCT sensors on cables)
3 – 2560nS
d
P – sets the time interval between the two consecutive pulses (dead time). The selections are:
1 – 640nS
2 – 1280nS
3 – 2560nS (recommended)
Alarm Status Thresholds for PDI and Magnitude (Q
02
) and Trend Thresholds:
InsulGard operates Alarm contacts based on PD parameter LEVEL and TREND (rate of parameter
change). Two PD parameters are available for alarm: PDI – partial discharge intensity and Q
02
–
maximum PD pulse magnitude @ 0.2 PPC repetition rate. One of the parameters can be enabled for
alarm at the time. The same parameter is enabled for 4-20mAmp output.
The are three level thresholds: Red, Yellow, and Green. Red and Yellow have a common sense meaning.
Green threshold suppresses TREND alarm while any parameter variations occur below or at this level. In
general, we recommend having proportion between threshold limits: Yellow 25-50% of Red, and Green
15-25% of Yellow.
List of status thresholds for PDI and Q
02
:
P0
– Green (normal) threshold for PDI (mW)
P1
– Yellow (warning) threshold for PDI (mW)
P2
– Red (alarm) threshold for PDI (mW)
