Deep® Natural Ester Insulating Oil is a flame-retardant natural ester cooling fluid used in electrical equipment such as transformers. It features excellent environmental, fire safety, chemical, and electrical performance. This insulating oil contains no petroleum, halogens, silicone resins, or any other harmful substances, and can rapidly and completely biodegrade in soil and water environments. Tests show that Depster Natural Ester Insulating Oil achieves 98% degradation within 28 days.
Slows Insulation Aging
Oxidation data indicators are well below IEC 62770 requirements.
Good oxidation stability extends transformer operational life.
Significantly delays transformer aging and enhances overload capacity.
Green Environmental Features
Renewable resource
Rapid and complete biodegradation
Non-toxic
Free from petroleum, halogens, silicone, and resins
Fire Safety Performance
Flash point >255°C, twice the mineral oil standard
Ignition point >355°C, excellent flame-retardant insulating liquid
Depster Natural Ester Insulating Oil
Suitable for high ignition point, flame-retardant, and excellent biodegradation scenarios
High-Temperature Overload Transformer Oil
Meets requirements for continuous or intermittent overload operation in transformers
Ultra-High Voltage & Extra-High Voltage Transformer Oil
Suitable for transformers rated above 500KV
Universal Transformer Oil
Suitable for distribution transformers rated 35KV and below
U-Type Transformer Oil
No additives are included, with oxidation stability indicators suitable for export to regions such as Europe, America, and the Middle East.
