Distribution
First introduced as a replacement for Polychlorinated Biphenyls (PCBs), Midel's popularity has grown at an impressive rate and today the Midel name is synonymous with reliability and superb technical support. Midel's 100% fire safety record and excellent environmental characteristics have positioned it as fluid of choice for distribution networks around the world.
Fire safety is crucial in distribution transformers because they tend to be located inside or close to buildings. Midel's high fire point and other fire safety properties are far superior to those of mineral oil. Consequently, the risk of a fire is greatly reduced and the requirements for protective measures are less stringent.
In addition, Midel is readily biodegradable and non-water hazardous which means that it poses less of a threat to the environment than silicone liquid and mineral oil.
Benefits of MIDEL 7131 in Distribution Transformers
Increased Fire Safety
- K-class high fire point (>300°C) to IEC 61100
- 100% fire safety record
- FM Global approved transformer fluid
High Performance
- Robust and stable, conducive to lower levels of maintenance
- Excellent high and low temperature performance
- Greater moisture tolerance than mineral oil, silicone liquid and natural ester
- Proven in demanding conditions throughout the world
- Reputation as the ‘fill and forget fluid'
- Flexible, suitable for breathing and sealed transformers
- Popular choice for retrofilling breathing transformers
Greater Environmental Protection
- Readily biodegradable according to OECD 301 and fully biodegradable according to IEC 61039
- Non-toxic and non-water hazardous
Excellent Customer Service
- Multilingual commercial team
- First-rate customer care
- Continued technical support from the transformer fluid experts

