TAXONOMY: MAT_FLUID
Transformer Dielectric Fluids & Esters
Inhibited Mineral Insulating Oil, Natural Esters (FR3) & Synthetic Esters (MIDEL)
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Technical Baseline & Specification Parameters
| Fluid Types | Inhibited / Uninhibited Mineral Oil, Natural Ester, Synthetic Ester |
|---|---|
| Breakdown Voltage | ≥ 70 kV (processed oil at 2.5 mm gap per IEC 60156) |
| Fire Point (Esters) | > 300°C (K-Class high fire point per IEC 61039) |
| Biodegradability | > 95% within 28 days for natural ester fluids (OECD 301) |
| Kinematic Viscosity | ≤ 11 mm²/s at 40°C (standard mineral oil) |
Subcategories & Engineering Architectures
Severe Hydrotreated Mineral Oil
High oxidation stability, low pour point (-40°C), optimized for maximum cooling velocity.
Natural Ester (K-Class)
Seed oil based fluid offering self-extinguishing fire safety, 100% biodegradability, and extended paper life.
Synthetic Organic Ester
Pentaerythritol ester designed for sub-zero climates (-56°C pour point), high moisture tolerance, and wind/rail applications.
Regenerated & Re-refined Oils
Circular economy transformer fluids reducing carbon footprint with full IEC 60296 compliance.
Suppliers in this category (52)
Companies listed for this category. A listing is not a product certification. The identity badge is shown only after TransformerPath checks the organization and a business contact.
| Company & Location | Capabilities & Product Lines | Status | Action |
|---|---|---|---|
|
Nynas AB Stockholm, Sweden |
NYTRO premium naphthenic transformer insulating oils | Listed | Website ↗ · RFQ |
|
Ergon Refining Jackson, MS, USA |
HyPrene dielectric mineral insulating oils | Listed | Website ↗ · RFQ |
|
Cargill (Envirotemp FR3) Wayzata, MN, USA |
Global market leader in natural ester dielectric liquids | Listed | Website ↗ · RFQ |
|
M&I Materials (MIDEL) Manchester, United Kingdom |
Synthetic and natural ester transformer fluids | Listed | Website ↗ · RFQ |
|
Shell Lubricants (Diala) The Hague, Netherlands |
Gas-to-liquids (GTL) high-purity transformer oil | Listed | Website ↗ · RFQ |
|
APAR Industries (POWEROIL) Mumbai, India |
Largest transformer oil exporter from India across 140+ countries | Listed | Website ↗ · RFQ |
|
Albert Maier GmbH Weil der Stadt, Germany |
Oil-level indicators, Breathers (silica gel), Pressure-relief devices, Conservator tanks | Listed | Website ↗ · RFQ |
|
Apar Industries Ltd (POWEROIL) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
ARASIS (Micafluid AG) Schlieren, Switzerland |
Oil treatment devices | Listed | Website ↗ · RFQ |
|
Baron USA (Baron Purification) Cookeville, United States |
Oil treatment devices | Listed | Website ↗ · RFQ |
|
Baur GmbH Sulz, Austria |
Test equipment, Oil treatment devices | Listed | Website ↗ · RFQ |
|
Camille Bauer Metrawatt AG Baden, Switzerland |
Monitoring / diagnostic devices, Temperature indicators, Oil-level indicators | Listed | Website ↗ · RFQ |
|
Cargill Inc. (Envirotemp FR3) Minneapolis, United States |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Ergon, Inc. (Ergon Refining) Jackson, United States |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Gandhar Oil Refinery (India) Ltd (Divyol) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Globe Core GmbH Oldenburg, Germany |
Oil treatment devices | Listed | Website ↗ · RFQ |
|
Hayward Tyler Group Luton, United Kingdom |
Oil-circulation pumps, Radiators / cooling systems | Listed | Website ↗ · RFQ |
|
Hedrich Group (HEDRICH GmbH) Ehringshausen, Germany |
Oil treatment devices, Test equipment | Listed | Website ↗ · RFQ |
|
Hilliard Corporation (HILCO) Elmira, United States |
Oil treatment devices, Oil-circulation pumps, Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Hindustan Petroleum Corporation Ltd (HP Lubricants) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Indian Oil Corporation Ltd (SERVO Electra) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
KSB SE & Co. KGaA Frankenthal, Germany |
Oil-circulation pumps | Listed | Website ↗ · RFQ |
|
Lee Vedla Industrial Corporation Bhopal, India |
Copper / CTC conductors, Pressboard / insulation materials, CRGO (core steel), Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
M&I Materials Ltd (MIDEL) Manchester, United Kingdom |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
MESSKO (MESSKO GmbH) Oberursel, Germany |
Monitoring / diagnostic devices, Oil-level indicators, Buchholz relays, Temperature indicators | Listed | Website ↗ · RFQ |
|
Panama Petrochem Ltd Ankleshwar, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Petro-Canada Lubricants (Luminol) Mississauga, Canada |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
PetroChina Lubricant Company (Kunlun) Beijing, China |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
PREIS Group Pernitz, Austria |
Bushings (HV, LV), Pressure-relief devices, Oil-level indicators | Listed | Website ↗ · RFQ |
|
PRESS-N-FORGE (India) Mumbai, India |
Breathers (silica gel), Bushings (HV, LV), Pressure-relief devices, Oil-level indicators, Monitoring / diagnostic devices | Listed | Website ↗ · RFQ |
|
Qualitrol Company Fairport, United States |
Monitoring / diagnostic devices, Oil-level indicators, Temperature indicators, Pressure-relief devices, Buchholz relays, Breathers (silica gel) | Listed | Website ↗ · RFQ |
|
Raj Petro Specialties Pvt Ltd (Brenntag) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Savita Oil Technologies Ltd (Savsol) Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Shell Global (Shell Diala) The Hague, Netherlands |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Sinopec Lubricant Company (SINOPEC / Great Wall) Beijing, China |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Prolec GE Waukesha Waukesha, United States |
Bushings (HV, LV), Tap changers (OLTC / DETC), Monitoring / diagnostic devices, Oil treatment devices | Listed | Website ↗ · RFQ |
|
Sukrut Electric Co. Pvt. Ltd. Pune, India |
Buchholz relays, Oil-level indicators, Pressure-relief devices, Temperature indicators | Listed | Website ↗ · RFQ |
|
TEK Makina Transformatör Tuzla, Türkiye |
Breathers (silica gel), Oil-level indicators, Pressure-relief devices | Listed | Website ↗ · RFQ |
|
TotalEnergies Lubricants (Isovoltine) Paris, France |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Unifin International London, Canada |
Radiators / cooling systems, Cooling fans, Oil-circulation pumps | Listed | Website ↗ · RFQ |
|
Viat Instruments Pvt. Ltd. Kolkata, India |
Oil-level indicators, Buchholz relays, Pressure-relief devices, Temperature indicators, Bushings (HV, LV) | Listed | Website ↗ · RFQ |
|
Cee Dee Vacuum Equipment Pvt Ltd Pune, India |
Oil treatment devices | Listed | Website ↗ · RFQ |
|
Columbia Petro Chem Pvt. Ltd. Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Flow Oil Pumps Private Limited Bangalore, India |
Oil-circulation pumps | Listed | Website ↗ · RFQ |
|
NACH Engineering Pvt. Ltd. Pune, India |
Transformer oil / ester fluids, Oil treatment devices | Listed | Website ↗ · RFQ |
|
Nandan Petrochem Limited Mumbai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Neo Tele-Tronix Pvt. Ltd. Kolkata, India |
Bushings (HV, LV), Transformer oil / ester fluids, Monitoring / diagnostic devices | Listed | Website ↗ · RFQ |
|
Power Map Engineering Vadodara, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Raj Petro Specialities Pvt. Ltd. Chennai, India |
Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
Raychem RPG (P) Ltd. Thane, India |
Copper / CTC conductors, Bushings (HV, LV), Pressboard / insulation materials, Transformer oil / ester fluids | Listed | Website ↗ · RFQ |
|
The Motwane Manufacturing Co. Pvt. Ltd. Nashik, India |
Pressboard / insulation materials, Transformer oil / ester fluids, Monitoring / diagnostic devices | Listed | Website ↗ · RFQ |
|
MESSKO GmbH (Reinhausen Group) Oberursel, Germany |
Pressure-relief devices, Oil-level indicators, Temperature indicators, Breathers (silica gel), Monitoring / diagnostic devices | Listed | Website ↗ · RFQ |