Precision Transformer Oil Filtration Systems
TRUHEAT engineers the most efficient and economical transformer oil purification systems. From single-stage vacuum filters to laboratory testing instruments — built for reliability.
Engineering Excellence in Oil Purification
TRUHEAT is a leading manufacturer of transformer oil filtering machines and high voltage testing equipment. With over five decades of experience, our team of R&D experts have been consistently successful in eliminating flaws and delivering maximum value to our esteemed customers.
Our product range spans from compact single-stage oil purifiers to advanced multi-stage vacuum filtration systems, along with a complete suite of electrical testing instruments used by power utilities, transformer manufacturers, and service companies across India.
Complete Range of Industrial Solutions
From oil purification to high-voltage testing — everything you need for transformer maintenance and quality assurance.
Transformer Oil Filter — Single Stage
The most efficient and economical purification system with indirect heating, vacuum dehydration, and centralized control panel.
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Transformer Oil Filter — Multi Stage
Double or three stage vacuum filter for superior dissolved gas removal and moisture reduction. Achieves BDV up to 80KV.
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Oil Test Set
Speedy and accurate dielectric strength testing of transformer oils as per IS:6792-1972. Available in 50KV to 120KV range.
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AC/DC High Voltage Test Set
Ideal for testing electrical strength of insulating materials, motor windings, transformers, ceramic HV insulators, and cables.
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Protection
Relay Test Set
Comprehensive testing of protective relays, over-current relays, earth fault relays, and circuit breakers with digital time meter.
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Voltage
Induced Over Voltage Test Set
Testing induced over voltage of distribution & power transformers, step-down/step-up units, and motors rated below 600V.
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Lab Testing
Acidity Testing Kit
Portable kit for accurate determination of acidity (neutralisation value) in transformer and insulating oils as per IS:1448.
View Details →Filtration Performance & Model Range
Industry-proven filtration results backed by decades of engineering refinement.
Dielectric Strength
Moisture Content
Suspended Impurities
Gas Content
| Model | Capacity | Heater Load | Voltage |
|---|---|---|---|
| TOFL / 50 | 250 LPH | 9 kW | 220 / 440 V |
| TOFL / 125 | 600 LPH | 18 kW | 220 / 440 V |
| TOFL / 250 | 1200 LPH | 27 kW | 220 / 440 V |
| TOFL / 500 | 2500 LPH | 45 kW | 220 / 440 V |
| TOFL / 1000 | 4500 LPH | 81 kW | 440 V |
| TOFL / 1300 | 6000 LPH | 95 kW | 440 V |
| TOFL / 1800 | 8000 LPH | 110 kW | 440 V |
| Parameter | Before Filtration | Single Stage | Two / Three Stage |
|---|---|---|---|
| Dielectric Strength | 20 KV | 60 KV | 75–80 KV |
| Moisture Content | 88 ppm | 20 ppm | 2 ppm |
| Suspended Impurities | 100 micron | 10 micron | 2 micron |
| Gas Content | 10% | 5% | 0.05% |
Filter unit · Indirect heater · Vacuum dehydration · Condenser · Control panel
Dual vacuum chambers · Transformer evacuation · Ionic reaction column · Digital instrumentation
Testing Instruments Catalog
Comprehensive range of oil testing and analysis instruments for quality assurance laboratories.
Built Different. Built Better.
Decades of engineering expertise, rigorous quality control, and an unwavering commitment to customer satisfaction.
R&D Excellence
Our dedicated R&D team continuously improves designs, eliminating flaws and pushing the boundaries of filtration efficiency.
IS Standard Compliance
All products manufactured as per Indian Standards (IS:6792-1972, IS:1969, IS:335) ensuring reliability and safety.
Indirect Heating System
Our patented indirect heating method completely prevents localized overheating of transformer oil — a TRUHEAT innovation.
Proven Performance
Achieve dielectric strength up to 80KV, moisture down to 2ppm, and gas content as low as 0.05% with multi-stage systems.
Complete Solutions
From oil purification to HV testing — we provide everything needed for transformer maintenance under one roof.
Customer First
It has been our constant endeavor to give maximum value. Custom configurations and turnkey solutions for every requirement.
Request a Quote
Ready to discuss your oil filtration or testing equipment needs? Reach out and our technical team will get back to you within 24 hours.
Phone
+91 9830305731
(033) 40077954
nishaoilfilter@gmail.com
Location
Kolkata, West Bengal, India
Business Hours
Mon – Sat: 9:00 AM – 6:00 PM IST
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