BWY and BWY2 manufacturer and supplier

Transformer Oil Temperature Indicators (OTI)

Select an OTI for local transformer top-oil indication, cooling control, high-temperature alarm and compatible remote measurement.

Direct answer. A transformer oil temperature indicator, or OTI, senses oil temperature at a thermometer pocket in the upper oil region. BWY and BWY2 models provide local indication and can operate contacts for transformer cooling or alarm functions.

Compare Transformer Oil Temperature Indicators (OTI) Models

Review model functions, outputs, installation interfaces and current document requirements before requesting a quotation.

How to Select a Transformer Oil Temperature Indicator

Start with the required top-oil scale and the thermometer pocket. Then define the number and purpose of cooling or alarm contacts, Pt100 or 4-20 mA output, capillary route, bulb dimensions, M27 × 2 thread and outdoor installation conditions.

Define the transformer measurement and control functions

Top-oil temperature, traditionally simulated winding temperature and direct winding hot-spot temperature are different values. Define the required local display, cooling stages, alarm or trip contacts, remote output and receiving equipment before comparing suffixes.

Provide complete mechanical and electrical interfaces

Send the transformer type, existing model, measuring range, contact duty, Pt100 or 4-20 mA requirement, supply, capillary length, bulb, thread, mounting dimensions, quantity and destination country. Replacement projects should include nameplate, terminal and installation photographs.

Control the final model specification

BWY, BWY2, BWR and BWR2 family names can cover several contact and output configurations. Confirm the complete model code against the current datasheet, outline drawing and terminal diagram before purchase.

For system integration, review substation remote transformer temperature monitoring and the transformer temperature controller wiring guide.

Direct engineering contact

Request Transformer Oil Temperature Indicators (OTI) Selection

Email the transformer type, model reference, measuring range, output, switch contacts, capillary length, quantity and destination country. INNO will reply with the applicable configuration details.