MIDEL
MIDEL Service Partner · MV-Lub

MIDEL 7131 synthetic ester transformer fluid and MIDEL eN 1204

Welcome to MIDEL Service Partner – MV-Lub

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The MIDEL film

What ester fluids do, in twenty-three seconds

From the world’s leading brand of ester transformer fluids to preventing transformer fires and protecting what matters — the whole case for ester, without a word of ours.

23 seconds · no sound · plays on loopMIDEL brand film
About us

MIDEL: For a Safer, Greener, Better Future.

We are your expert for Ester Transformer Fluids

MIDEL – the number one name in ester fluid technology since the 1970s.
Why MIDEL?

Four reasons operators change to ester.

Cost Savings

Reduced fire protection requirements and simpler installation lower the cost of a transformer project — and the cost of running it.

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Fire Safety

High fire points classify MIDEL as a K-class less flammable liquid — transformers can stand where mineral oil cannot.

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Environmental Protection

Readily biodegradable and non-toxic. In the event of a leak, soil and water stay protected.

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Business Continuity

Superior moisture tolerance and operation at 20 % overload keep the network up when demand peaks.

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The MIDEL Range

Explore the MIDEL Range

Synthetic and natural esters — and the service that keeps them in use.

Natural esterMIDEL eN 1204

Natural ester from renewable rapeseed. Readily biodegradable, non-toxic and with a high fire point — the everyday choice for distribution transformers.

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Synthetic esterMIDEL 7131

The original synthetic ester. High fire point and superior moisture tolerance — proven in power transformers from city substations to underground sites.

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Natural esterMIDEL eN 1215

Natural ester based on soya bean. A renewable alternative with the same fire safety and environmental benefits as the rest of the range.

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ServiceMIDEL Regen

Regeneration for ester fluid in service: the fluid stays in the transformer’s life cycle instead of being disposed of — a circular answer to maintenance.

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Applications

MIDEL Applications

Who we work with

MIDEL for safer, greener transformers

As MIDEL Service Partner, MV-Lub supplies ester transformer fluids across Europe — from the first specification to delivery, retrofilling and support on site.

  • Utilities protecting substations in dense city centres and sensitive water catchment areas.
  • Transformer manufacturers (OEM) designing K-class units for customers who ask for fire safety by design.
  • Industrial operators who cannot afford an outage — and cannot afford a spill either.

Trackside transformers, Paris

Why it is safe

MIDEL Safety Inside

Ester fluids do not just replace mineral oil — they change what a transformer is allowed to do, and where it is allowed to stand.

0 %continuous operation at overload
1900ester fluid technology since the 1970s

Fire safety and biodegradability of ester fluids confirmed by the US Bureau of Reclamation.

High fire points

K-class classification means less flammable — and fewer fire walls, bunds and separation distances around the unit.

Superior moisture tolerance

Ester absorbs far more water than mineral oil before insulation performance suffers, which protects the paper and the asset.

Operation at 20 % overload

Headroom when demand peaks — capacity you already own, without a second transformer.

Readily biodegradable, non-toxic

Suitable for water protection zones, city centres, tunnels and offshore platforms.

Contact us

Get in touch

Tell us about your transformer, your site and your timeline — we will come back with the right MIDEL fluid and a delivery date.

mideltech@mv-lub.com

Send an enquiry