Weidmann InsuLogix T User manual

InsuLogix® T Product Manual 1
InsuLogix® T
Product Manual
Weidmann Technologies Deutschland GmbH
Washingtonstraße 16/16a
D-01139 Dresden, Germany
Telefon: [phone]
Version 1.1

InsuLogix® T Product Manual 2
Contents
1. Introduction ......................................................................................................................... 4
Product Warranty ................................................................................................................... 4
Unpacking and Inspection ...................................................................................................... 4
Service ................................................................................................................................... 4
Safety..................................................................................................................................... 4
2. System Description ............................................................................................................. 5
InsuLogix® T instrument......................................................................................................... 5
Tank wall kit............................................................................................................................ 7
Tank wall Ring........................................................................................................................ 8
Tank wall Plate ....................................................................................................................... 9
Connectors............................................................................................................................10
J-Box.....................................................................................................................................10
Optic fiber Probes and Extensions.........................................................................................11
Probes ...............................................................................................................................11
Optic fiber in Oil Coupling (Optional) ..................................................................................11
Extensions .........................................................................................................................12
3. Installation..........................................................................................................................13
Optic fiber Probes and Extensions – Manipulation and Installation........................................15
Handling the optic fiber cables ...........................................................................................15
Probe Installation in Windings............................................................................................15
Weidmann Disk™ ..............................................................................................................16
Weidmann Smart Spacer™ ...............................................................................................17
Feedthrough connectors installation...................................................................................18
Optic fiber Extensions installation ......................................................................................18
Verifying the optic fiber continuity during installation process.............................................19
Connectors Cleaning .........................................................................................................20
Optic fiber Connections Testing .........................................................................................21
InsuLogix® T Instrument Installation......................................................................................21
4. InsuLogix® T System Configuration and Operation............................................................22
Integrating the InsuLogix® T into a data acquisition system ..................................................22
Using a PC/Laptop to connect to InsuLogix® T .....................................................................23
Using a PC/Laptop to connect to InsuLogix T via Modbus over RS485..............................23

InsuLogix® T Product Manual 3
Connecting the InsuLogix® T to SCADA ...............................................................................23
Relays setup and operation ...................................................................................................23
Data recording.......................................................................................................................24
InsuLogix® T in operation......................................................................................................24
ANNEX A – Wiring Diagram for InsuLogix® T integration with the transformer control cabinet .26
ANNEX B – MODBUS...............................................................................................................27
Figure 1: InsuLogix® T instrument ............................................................................................. 5
Figure 2: InsuLogix® T dimensions............................................................................................ 6
Figure 3: Tank wall kit components ............................................................................................ 7
Figure 4: Tank wall kit overall dimensions .................................................................................. 7
Figure 5: Tank wall Ring dimensions.......................................................................................... 8
Figure 6: Tank wall Plate/Flange dimensions ............................................................................. 9
Figure 7: Optic fiber Feedthrough connector .............................................................................10
Figure 8: J-Box dimensions.......................................................................................................10
Figure 9 Optic fiber probe design and dimensions ....................................................................11
Figure 10 Optic fiber in Oil Coupling (optional) with Ceramic Disk (optional) .............................12
Figure 11: Checking the fiber/connectors continuity and temperature measurement before the
installation on transformer.........................................................................................................14
Figure 12 Bending restrictions...................................................................................................15
Figure 13 Mechanical restrictions..............................................................................................15
Figure 14 Weidmann Smart Spacer with Nomex disk................................................................17
Figure 15 Examples of key spacers prepared for optic fiber probe installation ..........................18
Figure 16 Examples of optic fiber probe mounting in key spacer (Smart Spacer assembly)......18
Figure 17: Connecting the optic fiber cable to connectors on plate and to instrument ...............19
Figure 18: Checking the fiber/connectors continuity and temperature measurement during
system installation on transformer.............................................................................................20
Figure 19 Optic fiber connector cleaning tool ............................................................................21
Figure 20: Connecting the InsuLogix® T to a PC/Laptop...........................................................23
Figure 21: InsuLogix® T LCD....................................................................................................25
Table 1: InsuLogix® T instrument specifications ........................................................................ 6
Table 2: Tank wall Ring specifications ....................................................................................... 8
Table 3: Tank wall Plate/Flange specifications........................................................................... 9
Table 4: Optic fiber Feedthrough connector specifications ........................................................10
Table 5:J-Box specifications......................................................................................................11
Table 6: Extensions specifications ............................................................................................12
Table 7: System installation steps and checks ..........................................................................13
Table 8: Functions available for maximum 8 channels configuration and over 8 channels
configuration .............................................................................................................................24

InsuLogix® T Product Manual 4
1. Introduction
Product Warranty
The InsuLogix® T instrument is warranted (Parts and Workmanship) for two full years from the
date of purchase. Upon written notification of any defect, Weidmann will either repair or replace
any faulty product or components thereof. A Return Material Authorization (RMA) must be
obtained from Weidmann or authorized distributor prior to any merchandise return.
The manufacturer’s warranty is void in the case of any damage caused by using the product
contrary to its intended use, non-compliance with these operating instructions, assignment of
insufficiently qualified skilled personnel or unauthorized modifications to the instrument. the
general terms and conditions contained in the technical documentation shall apply.
The optic fiber probes are not warranted due to their unique nature.
Unpacking and Inspection
When unpacking and inspecting your system components, you need to do the following:
1. heck all materials against the enclosed packing list.
2. arefully unpack and inspect all components for visible damage.
3. Save all packing materials, until you have inspected all components and find that there is no
obvious or hidden damage.
4. Before shipment, each instrument is assembled, calibrated, and tested. If you note any
damage or suspect damage, immediately contact Weidmann.
NOTE: In some cases the InsuLogix® T instrument may be delivered already mounted in a
housing/cabinet with or without power supply mounted in same cabinet.
Service
In case of a malfunction or service request please contact our technical support Monday-Friday
between 8:30 to 17:00 MET: [phone] or email: [e-mail] or
[email protected]
RMA shipments must be sent to:
Weidmann Technologies Deutschland GmbH
Washingtonstrasse 16/16A17, 01139 Dresden
German
Telephone: [phone]
Product disposal
The unusable material must be disposed of in compliance with local regulations for electronic
materials.
Safety
Ensure that all good practice procedures and standards and used during system’s installation.

InsuLogix® T Product Manual 5
2. System Description
The InsuLogix® T can be delivered to user as a system, and includes:
- InsuLogix® T instrument
- Optic fiber probes
- DIN Plate and DIN Ring
- Optic fiber connectors
- Optic fiber extensions
- DIN Rail AC/DC or DC/DC converter (optional)
- NEMA 4 (IP66) cabinet (optional)
The system can also be delivered in partial shipments.
Available with 2 to 16 channels and with various instrument configurations, the InsuLogix® T
monitoring system is designed to be used for hot-spot temperature monitoring in power
transformer.
Temperature sensors are built using Gallium Arsenide (GaAs) crystals. No recalibration is
necessary throughout the product life time.
InsuLogix® T instrument
The instrument can be equipped at factory with:
- 2 to 16 optic fiber connectors corresponding to 2 to 16 channels (in increments of two)
- 4 relays (Optional)
- Analog output board with maximum 8 outputs (Optional). 4-20mA or 0-10V DC.
- USB port
- RS485 port (with Modbus protocol)
- Ethernet (with Modbus protocol) - Optional
- LCD
Figure 1: InsuLogix® T instrument
LCD
Analog outputs
Optic fiber connectors
RS485 and USB ports
Relays connectors
Aluminum housing
Mounting bracket
Status
LED

InsuLogix® T Product Manual 6
Figure 2: InsuLogix® T dimensions
Table 1: InsuLogix® T instrument specifications
Number of Channels 2 to 16
Measuring Range
-
20
0 °C to 3
00
°C
Accuracy < ± 1 K
Resolution 0.1 K
Measuring time/channel
250 ms
Operating temperature -20 °C to 60 °C
Storage temperature
-
20 °C to 70 °C
Light source lifetime Life of the transformer
EMI/RFI susceptibility Immune
Humidity
95 % RH
non
-
condensing
Communication ports Configurable at factory per customer specification: USB, RS-485, Ethernet
Communication protocol
Modbus over RS
-
485 and Ethernet
Analog outputs Maximum 8 outputs - 4-20 mA or 0-10 V DC Configurable at factory
Relays 2 for temperature thresholds; Switchable voltage: 120 V AC / 60 V DC; Switching load:
240 VA; Load current: 2 (120 V AC), 2 (24 V AC) A; Max load current: 2 A; Testing
voltage: 1000 V; Approbation: UL, CQC
System fault relays 1 dedicated system fault relay for instrument ; 1 dedicated relay for light signal strength.
Switchable voltage: 120 V AC / 60 V DC; Switching load: 240 VA; Load current: 2 (120
V AC), 2 (24 V AC) A; Max load current: 2 A; Testing voltage: 1000 V
- Approbation: UL, CQC
System status indicator
LED
Data recording In instrument for first 8 channels. Data recording for all channels possible via
connection to a PC or another device with data recording capability.
Optic fiber
connectors
type
ST
Auto diagnostic Light level, signal level
Power supply/consumption
24 VDC
/max. 40W
Instrument protection IP20
Instrument mounting
DIN Rail or mounting brackets
Warranty 2 years, optionally extensible up to 5 years

InsuLogix® T Product Manual 7
Tank wall kit
The Tank Wall Kit consists of:
- Tank wall Ring
- Tank wall Plate
- J-Box – protection for tank wall Ring/Plate/connectors
- O-ring (comes with Ring and Plate, to be installed between Ring and Plate)
- Gasket (comes with J-Box, to me installed between J-Box and Plate)
- Bolts
The components listed above are typically supplied as a kit, based on customer’s orders
they can also be supplied in various combinations (only the plate, plate with J-Box, etc)
based on customer’s order.
Figure 3: Tank wall kit components
Figure 4: Tank wall kit overall dimensions

InsuLogix® T Product Manual 8
Tank wall Ring
The tank wall Ring must be installed on transformer tank wall by welding process.
A sealing O-ring is supplied with the Ring. The O-ring is to be installed between the Ring and
the Plate, having the role of preventing the oil leaks.
The Ring is supplied with threaded holes for the bolts that will be used to install the Plate on the
Ring.
Figure 5: Tank wall Ring dimensions
Table 2: Tank wall Ring specifications
Attribute
Description
Material of tank wall Ring 1.4571, X6CrNiMoTi17-12-2, AISI316Ti
Threaded
holes for
Plate bolts
8
x M16 (ISO 1502)
Dimensions of Ring DI O.D 250 mm thickness 30 mm inner
diameter 125 mm
Weight
2.8
kg
Sealing O-ring 142.24 x 5.33 FKM SR 75 – AS 568-
358
A
A
125
250
M16x20(8x45°)
(30)
6.3
A
-
A
A

InsuLogix® T Product Manual 9
Tank wall Plate
The Plate is designed to be mounted on DIN Ring using 8xM18 bolts that are also supplied with
the Plate.
The Plate comes with the optic fiber connectors already installed on it. The number of
connectors supplied and mounted on the Plate is equal to number of optic fiber probes that will
be installed inside the transformer.
The Plate comes prepared with threaded holes for installing the J-Box.
Figure 6: Tank wall Plate/Flange dimensions
Table 3: Tank wall Plate/Flange specifications
Attribute
Description
Material of tank wall plate 1.4571, X6CrNiMoTi17-12-2, AISI316Ti
Number of holes for connectors Maximum 16/ ANSI B 1.20.1-1983
(R1992)
Threaded holes for J-Box fixation 4 x M8 (ISO 1502)
Dimensions of Plate
DIN
O.D 250 mm thickness 12 mm
Weight 8.3 kg
2
2
.
5
°
18
5
5
5
5
M8x8
210

InsuLogix® T Product Manual 10
Connectors
The number of Feedthroughs is at least equal to the probes that will be installed in the
transformer tank. Make sure to clean up the connectors’ fiber optic ends using the cleaning tool
supplied with the instrument, and make sure to keep the caps all the time on the connectors,
removing them only before connecting the extensions/probes to the plate.
Note: As the Feedhrough connectors come from factory already installed on the Plate, there is
no need to tighten the connectors again.
Figure 7: Optic fiber Feedthrough connector
Table 4: Optic fiber Feedthrough connector specifications
Attribute
Description
Type No O’ring; ST-to-ST feed though
Thread NPT 1/4”-18 or NPT 3/8”-18; ANSI B
1.20.1-1983 (R1992)
Screwing torque 20 Nm.. ≤ 25 Nm
Thread seal
PTFE
Resistance to pressure Up to 4 bar
Resistance to temperature
-
40 to 120 °C
J-Box
The J-Box is designed to be installed on the Plate and has the role of protecting the optic fiber
connectors from the environment.
Figure 8: J-Box dimensions

InsuLogix® T Product Manual 11
Table 5:J-Box specifications
Attribute
Description
Materials
Steel powder coated
Color RAL 7035
Dimensions 150 mm x 150 mm x 120 mm
Weight 1.7 kg
Sealing between flange and J-box FKM
Ingress Protection
IP66 ( IEC 60529), NEMA
4, ISO 20653
Optic fiber Probes and Extensions
The optic fiber cables that are delivered with the InsuLogix T system are:
- Optic fiber probes – consist of optic fiber with GaAs sensor and connector
- Optic fiber extensions – consist of optic fiber with two connectors
Probes
The outer jacket of the optic fiber temperature probes is made out of PTFE. A GaAs crystal
(Gallium Arsenide) sensor is attached at the tip of the probe.
The probe sensor is completely non-conductive. Weidmann‘s optic fiber sensors ae completely
immune to RF and microwave radiation with high temperature operating capability, intrinsic
safety, and non-invasive use. The probes are also designed to withstand harsh and corrosive
environments.
Figure 9 Optic fiber probe design and dimensions
Optic fiber in Oil Coupling (Optional)
The InsuLogix® T can be supplied with optional Fiber-Optic-In-Oil-Connector. The personnel
installing the probes in windings must make sure that both sides of the connector are properly
cleaned and the connector is properly secured before the transformer tank is filled with oil. It is
highly recommended that skilled personnel perform continuity and temperature check using a
portable hand held device.

InsuLogix® T Product Manual 12
Figure 10 Optic fiber in Oil Coupling (optional) with Ceramic Disk (optional)
Extensions
The optic fiber extensions consist of protected optic fiber cable with optic fiber connectors
mounted on both ends.
The extensions are used to connect the InsuLogix® T instrument to connectors that are installed
on plate. The extensions conduct the light between the instrument and the connectors.
It is highly recommended to install the extensions inside metallic or plastic conduits in order to
better protect them against the environment as well as against animals and unplanned
personnel actions. The conduits must protect the extensions on all their length, between the J-
Box and the cabinet where the Insulogix® T instrument is installed.
Table 6: Extensions specifications
Attribute
Description
Specifications/standard
Fiber glass silica O.D. 250 µm H200/220P, AD 245µm
NIR/UV
H200/220P, AD 245µm NIR/UV
Coating material and thickness 20 µm Polyimide
Inner jacked Shell material and
thickness
PTFE or similar
Outer jacket material and thickness PTFE 0.76 mm
Inner jacket colour Blue
Overall O.D.
3.17 mm
Weight 15 g/m
Outer jacket
colour
Red
Resistance to environment (cold, heat,
UV, outdoor rated)
-50 to 85 °C; UV rated, outdoor rated
Length Variable, per customer specifications
in 1 meter increments.. Standard
length not longer than 20 meters.
Connectors type ST

InsuLogix® T Product Manual 13
3. Installation
There are several operations that user must follow in order to install a complete system. Some
of these steps will be skipped in case of partial installation (when installing only the probes, only
probes and tank wall kit, etc).
The steps to be taken in order to install a complete system are:
1. Install the optic fiber probes inside the windings and/or insulation structure
2. Install the Tank Wall Kit on transformer’s tank wall
3. Install the InsuLogix® T instrument in transformer cabinet or on transformer structure
(InsuLogix® T inside a separate housing)
4. Install the fiber extensions for connecting the instrument to the transformer tank wall
plate.
5. Make the electrical and fiber extensions connections to the instrument (if available).
6. Use the software provided to set up the alarms and finalize the instrument
commissioning.
Note: During and in between these steps is highly recommended to test the fiber continuity
to make sure that fiber is not broken or connectors are clean.
Table 7: System installation steps and checks
Operation
Pre
-
requisite
Pay attention to
Check
1 OPTIONAL: Verify
system/components operation
before installation. See the Figure
10 below this table to identify the
situation you are in.
At minimum have in hand
the InsuLogix® T
instrument or the portable
one channel instrument and
the probes.
Fiber handling (see
appropriate section in
this document).
Keep the rubber caps
on connectors at all
times.
At room temperature all
temperatures read on the
instrument must be within
2ºC from each other. If not
then clean up the optic
fiber connectors.
2 Install the probes in windings. Have all necessary probes.
Know where to install the tip
of the probes (location for
sensors).
Fiber handling (see
appropriate section in
this document).
Keep the rubber caps
on connectors at all
times.
After installation use the
portable device to check
the sensor reading and
signal strength.
3 Install the Tank Wall Kit to
transformer tank wall
Kit must be available Keep the rubber caps
on connectors at all
times.
-
4 Install conduit between the plate/J-
Box and the location where the
instrument is/will be located and
route the extensions through the
conduits
- Fiber handling (see
appropriate section in
this document).
Use the portable
instrument to verify fiber
continuity through
extensions, plate and
probes (if all are being
connected).
5 Install the instrument in transformer
control cabinet and – if available -
connect the fiber extensions, power
and signal cables.
Instrument must be
available
Remove the caps
placed on the optic
fiber connectors only
when connecting the
extensions. Fiber
handling.
Clean up the connectors
before connecting the
extensions.
Double check all wiring and
power supply before
powering up the system.
6 Verify fiber probes continuity,
minimum at following moments:
1. After each probe installation in
winding
2. Before installing the windings
assembly in the tank
3. Before filling the tank with oil
4. After heat run test
5. Before shipping the
transformer to end user
Have at least a portable
device.
Fiber handling (see
appropriate section in
this document).
The signal from sensors
must be within normal
range (the instrument will
give an error if not).
Temperatures read from
sensors must make sense
(given where the sensors
are installed)

InsuLogix® T Product Manual 14
Figure 11: Checking the fiber/connectors continuity and temperature measurement before the installation on
transformer
Connector
Put the probes on a table and use the
portable device to verify the probes
operation.
Put the probes and the plate on a table and
use the portable device to verify the probes
and plate’s connectors operation. If the
system’s extensions are not available then
use the extension that was supplied with
the portable instrument.
Put the probes, the plate and the
extensions on a table and use the portable
device to verify the probes and
plate/connectors operation. Use the
extensions that have been supplied with the
system.
NOTE: The instruments will indicate if the signal strength through the fiber is within normal range. Also
use your judgement to evaluate if the temperatures that are read are normal given the environment
where the system and probes are operating. If temperatures seem to be off or the signal strength
outside of range then take the following steps in order to troubleshoot: 1. Clean up the connectors
using the supplied cleaner. 2. Check again. 3. If still not OK then switch the extensions to narrow down
on what component is causing the problem (probe, connector on plate, the instrument’s channel or the
extension). If still not able to solve the problem then contact Weidmann and be prepared to inform on
the results of your troubleshooting process.
Sensor
Sensor
Sensor
Probe
Probe
Probe
Extension
Portable
device
Portable
device
Portable
device
InsuLogix®T
Plate
Plate
Connector

InsuLogix® T Product Manual 15
Optic fiber Probes and Extensions – Manipulation and Installation
Handling the optic fiber cables
Bending radius
200µm silica core fiber
S hort time (max. 24h) bending radius: not less than 4 cm.
Permanent installation bending radius: not less than 8cm.
Figure 12 Bending restrictions
Figure 13 Mechanical restrictions
Probe Installation in Windings
The ultimate responsibility for the probe installation and performance remains with the
transformer manufacturer.
The probes can be installed in windings as follows:
A. During winding process
B. After winding process and before winding compression
The OEM is generally choosing the time when to install the probes based on transformer design
and based previous experience with optic fiber probes installation.

InsuLogix® T Product Manual 16
The probes can be delivered in one of the following configurations:
- Probe with a Nomex or Ceramic disk mounted at the tip. In this case the OEM will have
to mount the probe into an insulation component then install the probe in the transformer
insulation structure.
- Probe with an insulation component (key spacer or other) attached to its tip, with or
without disk. In this case the OEM has to simply install the probe in transformer
insulation structure.
- Probe only. In this case the OEM has to mount the probe into an insulation component
then install the probe in the transformer insulation structure.
Attaching the Optic fiber Probe and Routing it Inside the Tank
Hot Spot location: The hottest spot of the winding is determined based on transformer specific
design and can be found in transformer manufacturer design documentation.
Make sure the optic fiber connector protection caps are left on for the entire manipulation
process and up to connection to connectors located on the plate. Follow the cleaning procedure
included in this document before connecting the connectors to their mates.
In cases when is necessary attaching the probe to a conductor then tape should be used with
the probe being attached side-on to the conductor for better thermal contact. We recommend
using crepe paper for protecting the sensor when the optic fiber probe is attached to the
conductor.
Special attention must be paid to securing the optic fiber probe to winding structure in such a
way so the cable or the sensor is not crushed by coil’s sudden contraction. Is preferable using
cotton strapping in order to attach the optic fiber to transformer insulation or metallic
components.
Unused parts of optic fiber probes should be attached to transformer components in loops
with radius not smaller than 20 centimeters.
Special attention must be paid to not let connectors or optic fiber hanging freely during the
winding manipulation (assembly and drying processes). We recommend using cotton
strapping.
Routing the Probes to Feed-Through Connectors Located on the Plate
Generally the probes can all be run along the tops of the windings to one of the tank’s walls.
The probes can be routed through rigid tubing or secured by using cotton strapping to any
supporting structure.
Pay special attention to using tubing and strapping materials that can significantly change their
properties in contact with hot oil or under thermal stress becoming stiffer or creating sharp
edges. Do not over-tie the cotton straps.
Weidmann Disk™
The Weidmann Disk™ is made out of Nomex® material. Error! Reference source not found.
shows the probe’s sensing end mounted in the Nomex disk. The spacer must have hole with a
diameter of 19 mm and the spacer thickness must be 3.2 mm..

InsuLogix® T Product Manual 17
Figure 14 Weidmann Smart Spacer with Nomex disk
Weidmann Smart Spacer™
As an insulation designer and manufacturer Weidmann has in-house expertise to assembly and
test the optic fiber probe-key spacer to make sure the assembly does not induce supplementary
stress at the location where is installed.
The Smart Spacer™ is an assembly consisting of optic fiber probe mounted in a key spacer
conform to OEMs specific design. The probe mounting in key spacer and testing of finalized
product are done at Weidmann facility, following that the OEM will receive the final product
along with a Testing and Performance Certificate. This eliminates the assembly and testing
processes that normally the OEM is doing before installing the optic fiber in transformer
windings using key spacer solution.
Smart Spacers can be manufactured by Weidmann based on transformer insulation package
design specifics. Several examples for key spacer preparation for mounting the optic fiber probe
are shown below.

InsuLogix® T Product Manual 18
Figure 15 Examples of key spacers prepared for optic fiber probe installation
Figure 16 Examples of optic fiber probe mounting in key spacer (Smart Spacer assembly)
Feedthrough connectors installation
Weidmann is supplying the transformer tank wall plate with the connectors pre-installed on it.
The connectors and leak-proof and is not needed to re-tighten them over transformer lifetime.
Optic fiber Extensions installation
The optic fiber extensions are optic fiber cables with connectors at both ends. Their role is to
make the connection between the optic fiber connectors mounted on the feedthrough plate and
the InsuLogix® T monitor.
The transformer OEM must install a conduit - metallic or flexible but stiff enough to provide
mechanical and environment protection - between the tank wall plate J-Box protection housing
and the transformer cabinet where the InsuLogix® T monitor is installed. The optic fiber
extensions must be routed from the feedthrough plate to transformer control cabinet through the
conduit.

InsuLogix® T Product Manual 19
Make sure to separate the optic fiber extensions from other wiring and cabling going into/from
the transformer control cabinet, in this way reducing the possibility of pinching, crushing or
breaking the optic fiber extensions. The conduit containing the optic fiber extensions must be
connected to transformer cabinet through its own gland, separately from the other conduits and
as close as possible to where the InsuLogix® T monitor is installed.
Ideally the OEM should route the extensions through their own conduit also inside the
transformer control cabinet. If this is not done then Weidmann strongly recommends that optic
fiber extensions sections located inside the transformer control cabinet be clearly identified by
the transformer OEM with tags as "Optic fiber - Fragile" and "Allowed bending radius - not
less than 8 centimeters". The fiber extensions must be secured in a single bundle until close to
instrument where they can be split in order to be connected to InsuLogix® T monitor optic fiber
connectors.
Do not use plastic tie-wraps to secure the optic fiber extensions inside the transformer cabinet.
If possible use soft rubber material tie-wraps (or equivalent) at least one centimeter in width. Do
not over tighten.
Figure 17: Connecting the optic fiber cable to connectors on plate and to instrument
Verifying the optic fiber continuity during installation process
A number of checks and verifications of installation can be done during the transformer
manufacturing process. More information is give in Figure 16 below.

InsuLogix® T Product Manual 20
Figure 18: Checking the fiber/connectors continuity and temperature measurement during system
installation on transformer
Connectors Cleaning
Weidmann is optionally supplying a optic fiber one-click cleaner. The tool is simple and quick to
use as is shown in image below.
Use the portable one channel device to
verify each probe operation after installation
in winding
Use the portable one channel device to
verify the probes and plate connectors
operation after winding installation in tank
Use the portable one channel device to
verify the probe, plate connectors and
extensions operation after the transformer
has been completed and the optic fiber
monitoring system has been installed.
Note: The instruments will indicate if the signal strength through the fiber is within normal range. Also
use your judgement to evaluate if the temperatures that are read are normal given the environment
where the system and probes are operating. If temperatures seem to be off or the signal strength
outside of range then take the following steps in order to troubleshoot: 1. Clean up the connectors
using the supplied cleaner. 2. Check again. 3. If still not OK then switch the extensions to narrow down
on what component is causing the problem (probe, connector on plate, the instrument’s channel or the
extension). If still not able to solve the problem then contact Weidmann and be prepared to inform on
the results of your troubleshooting process.
Sensor
Sensor
Sensor
Portable
device
Portable
device
InsuLogix® T
Portabl
e
Plate
Plate
Connector
Connector
Probe
Probe
Probe
Winding
Winding
Tank
wall
Tank
wall