InsulGard System Installation and Start Up Guideline
32
Table 4. PD sensors configuration for Rotating Machines.
After terminating coax cables from the sensors to the InsulGard Sensor Interface Board check resistance at PD
signal termination strip between central wire and shield of PD sensors coax cables:
Ch
#
Sensor
designation in
database
1)
Default sensors
Sensor
measured
resistance
2
Ohm
Pulse Magnitude
recorded by
InsulGard
3)
, mV
(optional)
Comments
1
CC_A
2
CC_B
3
CC_C
4
RTD 01
RTD-6 board #1
5
RTD 02
6
RTD 03
7
RTD 04
8
RTD 05
9
RTD 06
10
RTD 07
RTD-6 board #2
(if applicable)
11
RTD 08
12
RTD 09
13
RTD 10
14
RTD 11
15
RTD 12
Table 5. PD sensors configuration for switchgear line
The table below helps to avoid errors at PD sensor installation, their cables termination and for report preparation.
Ch
#
Sensor
designation in
database
1)
Sensor
measured
resistance
2)
Ohm
Pulse Magnitude
recorded by
InsulGard
3)
, mV
(optional)
Vertical section
(Cubicle) original
name#
Cubicle/Bus/Feeder
information
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Notes:
1. Sensor designation in the database should match information in the configuration worksheet that was populated
at the time of order entry. Correct sensor designation in the database if sensor locations were changed.
2. For IPDS the resistance should be close to
3kOhm
. For RFCT and RTD-6 sensors the resistance should be
<2
Ohms
. Basically it is the resistance of the coax cable and depends on its length.
3. Pulse Magnitude recorded by InsulGard at system calibration (Optional)
.
