BIOTEMP ® Biodegradable Dielectric Insulating Fluid

 BIOTEMP ®
 
 Biodegradable Dielectric Insulating Fluid
 
Vegetable Oils for Liquid Filled Transformers 
 

 

n  BIOTEMP® is an advanced dielectric insulating medium that was developed by ABB to be

friendly to the environment.

 

 n  The fluid has excellent dielectric characteristics with high temperature stability and superior flash and fire resistance.

  

n  BIOTEMP® is currently in use in distribution and small power transformers across the United States. The fluid has a proven success rate in heavily populated areas and in varying environments from the tropical environment of Hawaii to the frigid northern slopes of Alaska.

 

 n  BIOTEMP® exceeds the dielectric strength of mineral oil and high-temperature Hydrocarbons (HTH’s) and maintains dielectric strength with higher levels of moisture.

 

 n  Environmentally friendly

          _ BIOTEMP® is non-toxic to birds, animals and human life.

          _The fluid does not contain any petroleum, halogens,   silicones or other materials that might adversely

            effect the environment.

 

 n  The study showed that BIOTEMP®/Kraft paper has double the life of mineral oil / Kraft paper  with better tensile strength and degree of polymerization measurements.

 

n  BIOTEMP® has many advantages over existing insulating fluids in relation to gas absorption and gas evolution under arcing. Testing has confirmed that only 25% of the total volume of gasses generated from petroleum-based oils are produced when BIOTEMP® is arced. The gasses produced do not contain many of the polyaromatic hydrocarbons associated with arcing petroleum-based oils.

 n  The thermal properties of BIOTEMP® are superior to conventional mineral oil. The fluid has a lower oil temperature rise than mineral oil when used in transformers Higher thermal conductivity results in improved heat transfer.

  

n  BIOTEMP® is not affected by reactions with other materials of transformer construction and is non-oxidizing and non-corrosive at temperatures considerably above normal operating temperatures.

  

n  BIOTEMP® has distinct advantages over other high-temperature dielectric fluids with fire and flashpoints well above 300ºC. BIOTEMP® is difficult to ignite and produces only carbon dioxide and water without harmful polyaromatic or silicate byproducts when burned.

 

n  BIOTEMP® is suitable for application indoors and in areas of heightened

            environmental sensitivity where any an insulating fluid spill could require

             expensive clean-up procedures.

 

n  Retrofilling Transformers

            BIOTEMP® mixes in all proportions with mineral oils.  Concentrations of mineral oil in excess of 10% by weight may lower the fire point below 300ºC.   BIOTEMP® does not        

            mix with silicone fluids.

 

TYPICAL PROPERTIES OF INSULATING FLUIDS
	New Oil	Mineral Oil	H.T.H	Silicone
Electrical
Dielectric Strength, kv   (ASTM  D877 )	45	30	40	43
Dielectric Strength, kv (IEC  156 )	56	45
Physical
Viscosity,  cSt.       100 ْ C	10	3	11.5	16
( ASTM D445 )        40 ْ C	45	12	110	38
0 ْ C	300	76	2200	90
Flash pt. ْ C         (ASTM D92)	330	145	285	300
Fire pt. ْ C           (ASTM D92)	360	160	308	330
Specific Heat (cal/gr/ ْ C)  (ASTM D2766)	0.47	0.43	0.45	0.36
Coefficient of Expansion, /  ْ C (ASTM D1903)	6.88 x 10-4	7.55 x 10-4	7.3 x 10-4	1.04 x 10-3
Pour pt. ْ C       (ASTM D97)	- 15 to -25	- 40	- 24	- 55
Sp. Gravity      (ASTM D1298)	0.91	0.91	0.87	0.96
Color               (ASTM D1500)	<0.5	0.5	0.5 – 2.0	<0.5
Environmental
Biodegradation  Rate (%)    21 – day CEC – L - 33	97.0	25.2	27.1	0.0