Measure the winding
Position TPT-62 sensors in winding spacers using EasyDisk for direct hot-spot measurement.
Solutions / FISO Technologies / Nortech
Direct winding hot-spot measurement—built into the transformer.
FISO Nortech fiber-optic systems measure temperature at winding, core and oil locations. TM Networks coordinates system selection, OEM design integration and Korea project support.
TPT-62Sensor→EasyThroughTank interface→EasyGridMonitor / IED
Why direct measurement
Temperature evidence from inside the active part.
Electrical immunity and direct contact with winding insulation make fiber-optic sensing well suited to transformer environments where inferred temperature alone may not answer loading, validation or condition-monitoring questions.
RFI / EMI immune
All-dielectric sensing and optical transmission support measurements inside high-voltage equipment.
No routine recalibration
GaAs white-light measurement is designed for stable sensing over transformer service life.
Control-system integration
Model-dependent options include analog outputs, Modbus, IEC 61850, DNP3.0 and IEC 60870-5-104.
Complete measurement chain
From conductor contact to the substation network.
Sensor quantity, routing, feedthrough count, plate arrangement, external cable length and monitor protocol should be selected with the transformer designer.
TPT-62 sensor
Oil-compatible 62.5 µm fiber-optic probe for windings, core, top/bottom oil and other critical locations.
- Range
- -40°C to 225°C
- Accuracy
- ±1°C
- Lengths
- 2–15 m
EasyDisk
Nomex™ disk secures the probe in the spacer, supports direct contact and protects the cable during manufacturing.
- Fixing
- No adhesive
- Purpose
- Position + protection
EasyThrough / EasyPlate
316L stainless-steel optical feedthrough and tank-wall plate carry the signal across the sealed boundary.
- Pressure
- 20 bar / 290 psi
- Plate capacity
- Up to 25
CFO-C12 extension
Rugged 62.5 µm ST-ST external cable connects the tank interface to the monitoring enclosure.
- Range
- -55°C to 85°C
- Custom length
- Up to 1,000 m
Monitor selection
Choose the EasyGrid architecture by channel count and integration needs.
Options and protocols vary by model. Final selection should be confirmed against the current datasheet, transformer I/O list and substation communication specification.
EasyGrid
Full local HMI and control
For larger channel counts, color touch display, relay options and advanced communications.
- 4–18 measurement channels
- Up to 18 analog outputs
- 0, 8 or 16 Form-C relays
- Optional Ethernet protocols
EasyGrid LT
Flexible compact monitor
Cost-effective local monitoring for smaller channel counts with display, memory and diagnostics.
- 2–8 measurement channels
- One analog output per channel
- Optional relay and Ethernet
- Modbus plus optional protocols
EasyGrid Base
Network-oriented RTU / IED
Remote-condition-monitoring architecture for wide operating temperatures and grid integration.
- 4–12 measurement channels
- -40°C to 85°C operation
- Analog, serial and Ethernet paths
- Data logging and diagnostics
Design-stage recommendation: define probe locations before winding and spacer design is frozen. Late selection can limit routing, feedthrough placement and measurement value.
Application workflow
Turn a sensor request into a buildable bill of materials.
TM Networks acts as the Korea application interface between the transformer manufacturer, end user and FISO technical team.
- 01 · ObjectiveDefine winding, core, oil, LTC or reactor measurement locations.
- 02 · Design inputsReview winding arrangement, spacer geometry, routing and tank interface.
- 03 · MonitorSelect channels, analog outputs, relays, media and protocols.
- 04 · Complete BOMConfirm probes, hardware, plate, cables, monitor and accessories.
- 05 · Factory supportPlan installation, continuity checks and commissioning readiness.
Technical downloads
Start with the catalog, then send the project inputs.
The worksheet is for preliminary definition. TM Networks will confirm current revisions, options and order codes before quotation or purchase.
FISO Nortech Energy Catalog
Measurement principle, EasyGrid family, TPT-62, EasyDisk, EasyThrough, EasyPlate, cables and test tools.
EasyGrid Configuration Worksheet
Checklist for monitor type, channel count, sensors, extensions, tank interface and enclosure options.
Document control: Specifications and order codes may change. Contact TM Networks for the currently applicable quotation documentation.
Korea project support
Planning a new transformer or reactor?
Send the rating, voltage class, proposed locations, channel count, protocols and production schedule.