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Applications › Transformers
INNO provides transformer temperature monitoring for windings and other critical locations. Transformer winding temperature monitoring uses a fiber optic transformer winding temperature sensor to capture direct, electrically isolated data. A complete transformer temperature monitoring system can connect those points to alarms, displays and plant interfaces.
ENGINEERED FOR RELIABILITY
Fiber optic temperature sensing supports different transformer types, project stages and monitoring requirements.
Fiber optic probes can be installed at selected winding hot spots during transformer manufacturing or major overhaul. Optical feedthroughs route the sensing fibers through the tank while maintaining electrical isolation.
Fiber optic probes measure winding and coil hot spots without conductive sensing leads. Probe position, fiber routing and channel count can be configured around the coil structure and enclosure.
Add fiber optic temperature channels at accessible measurement points or during planned maintenance, with outputs integrated into existing monitoring, PLC or SCADA systems.
Select the sensing and monitoring configuration according to transformer construction and installation requirements.
Direct temperature measurement at selected winding hot spots.
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Route optical fibers through the transformer tank with suitable sealing and protection.
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Connect internal sensing probes to the external monitoring instrument.
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Acquire, display and transmit temperature data from multiple winding points.
→Select the sensing and monitoring configuration according to dry-type transformer winding and enclosure requirements.
Direct temperature measurement at selected dry-type transformer winding and coil locations.
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Channel count can be configured according to the number of winding measurement points.
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Centralized temperature monitoring, alarms and communication for dry-type transformer applications.
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Software and compatible accessories for temperature display, data recording and monitoring configuration.
→ADDITIONAL TEMPERATURE MONITORING
Extend transformer visibility beyond the winding with selected points and integrated monitoring outputs.
Monitor selected terminals, joints and electrical connection points.
Monitor selected temperature points in the on-load tap changer compartment.
Monitor radiator, cooling circuit or other selected thermal points.
Integrate temperature data, alarms and communication with existing monitoring, PLC or SCADA systems.
DELIVERING CONFIDENCE AT EVERY STEP
Application requirements and sensing points reviewed before configuration.
Probe construction, channel count and interfaces matched to the project.
Guidance for routing, mounting and system commissioning.
Configured equipment prepared for the reviewed application.
Technical communication for international project teams.
Responsive coordination from review through delivery.
BUILT FOR PERFORMANCE
Direct point measurements at selected winding and component locations.
A dielectric sensing path keeps conductive wiring away from the measurement point.
Optical signals remain dependable around strong electromagnetic fields.
Earlier temperature visibility supports planned inspection and maintenance.
OIL-IMMERSED POWER TRANSFORMERS
Fiber optic probes can be positioned at reviewed winding and structural locations for direct temperature visibility.
DRY-TYPE & DISTRIBUTION TRANSFORMERS
Monitor temperatures around coils, busbars, terminations and connections to support safe operation and maintenance decisions.
TYPICAL TRANSFORMER PROJECT SCENARIOS
Plan sensing locations before final assembly and installation.
Add temperature visibility while preserving reviewed installed assets.
Observe critical winding and terminal temperatures in power-generation applications.
Use consistent temperature point and channel structures across reviewed transformer projects.
TEMPERATURE MONITORING OBJECTIVES
Direct temperature data helps verify winding hot spots, cooling performance and thermal behavior under changing operating conditions.
Measure temperature directly at selected winding locations instead of relying only on calculated values.
Track how winding temperature changes as transformer loading and operating conditions vary.
Compare selected measurement points to identify uneven or localized heating.
Observe temperature changes before and after cooling stages to evaluate thermal performance.
Use continuous temperature data and alarms to identify unusual thermal behavior.
Send temperature values and alarms to local displays, monitoring systems, PLC or SCADA.
SOLUTION ARCHITECTURE
Place probes at reviewed internal or external temperature points.
Convert optical signals into stable temperature values and outputs.
View temperatures, alarms and trends locally.
Deliver reviewed data to a centralized monitoring workflow.
Review source-backed field records before planning a comparable dry-type transformer winding or controller installation.
A documented local controller and alarm interface at a dry-type transformer installation.
Read documented case →
A documented probe-routing arrangement for direct winding temperature measurement.
Read documented case →MEASUREMENT COMPARISON
Indirect methods infer internal temperatures from load, oil temperature and thermal models. Direct fiber optic probes measure temperature at the selected point itself.
✓ Actual point temperatures
✓ Direct hot-spot visibility
✓ Independent of thermal models
✓ Supports earlier review
× Based on models and assumptions
× May miss localized hot spots
× Affected by load changes
× Requires model validation
OPERATIONAL OUTPUTS
PROJECT REVIEW
Share the transformer type, target locations and required outputs. Our engineers can review a sensing and monitoring approach around the actual application.
FAQ
It uses passive optical probes to measure temperature directly at selected transformer locations while maintaining electrical isolation from the monitoring instrument.
Typical reviewed locations include windings, top-oil points, bushings, tap-changer areas, cooling circuits and cabinet connections. Final placement depends on transformer design and installation access.
Yes. A retrofit can add selected temperature points and connect them to a compatible display, alarm or plant monitoring system after the existing equipment and interfaces are reviewed.
Compatible transmitters can provide reviewed communication or analog outputs for plant monitoring. The required protocol and point mapping should be confirmed during project review.
The approach can be used for oil-immersed, dry-type, distribution, industrial and other transformer applications where direct, electrically isolated temperature data is needed.
Share the transformer type, sensing locations, expected temperature range, number of points, routing distance and required display, alarm or communication outputs.
Share your transformer, sensing locations and monitoring requirements with an INNO engineer.
Contact Engineering →