Comparison of mineral insulating oil And the new oil

 Comparison of mineral insulating oil
And the new oil, which is resistant to ignition

First: DIELECTRIC STRENGTH

The insulation strength according to ASTM specifications is 56 kV. For new oil and 45 kV. For mineral insulating oil.

Second: resistance to ignition

The mineral insulating oil is flammable, as the ignition temperature is 165°C. The new oil is flammable, as the ignition temperature is 360°C.

Third: Life expectancy

New oil acts as a drying agent for insulating paper in transformers that have been exposed to moisture during years of operation, and this feature helps to increase the life span of insulating materials in transformers.

Tests were conducted to determine the life span of the insulating paper, and it was found that the paper immersed in new oil has a lifespan of five times the insulating paper immersed in mineral insulating oil.

Fourth, other features

1- The new oil is environmentally friendly as it is of vegetable origin and is therefore not harmful to the environment.

2- The mineral insulating oil is capable of forming sediments, and the new oil is not SLUDGE.

3- In the event that a transformer filled with mineral insulating oil is exposed to a fire as a result of the burning of the nearby tasks or an internal shortening of the transformer coils, then the mineral insulating oil ignites, which leads to the complete damage of the transformer.

     But if the transformer filled with new oil is exposed to the same previous conditions, the new oil does not ignite. And if the converter is exposed to a shortcoming in its files, these files can be repaired and the converter returned to the proper state.

4- For transformers filled with new oil, the distance between them and the adjacent tasks is less, which leads to savings in the costs of connections between them and the loads fed from them.

5- Transformers filled with new oil can be installed inside buildings without the need to install sprinklers to extinguish the fire. It is sufficient to leave a distance of 90 cm between the transformer and the wall and a distance of 1.5 meters between the transformer and the ceiling.

Fifth: The different uses of the new oil.

1- New oil is used to fill the new distribution transformers, thus the transformer becomes resistant to ignition with an increase in its useful life and its ability to increase the load on it.

2- For distribution transformers filled with mineral insulating oil, this mineral oil can be replaced with new oil. In the event that traces of mineral oil remain, amounting to 5% of the weight of the new oil, the degree of combustion remains more than 300 degrees Celsius, which is the permissible limit for flammable liquids.

3- Many companies that manufacture power transformers have benefited from the excellent properties of the new oil by replacing the mineral insulating oil in their transformers with new oil. A list is attached showing the names of some of the companies that implemented this.

4- Some companies have benefited from the use of transformers filled with new oil as an alternative to dry transformers, given that the price of a transformer filled with new oil is about 30% less than the price of a dry transformer of similar capacity, in addition to the fact that the losses in dry transformers are Usually more than oil-filled transformers, which leads to increased annual operating costs of dry transformers.

TYPICAL PROPERTIES OF INSULATING FLUIDS
	New Oil	Mineral Oil	H.T.H	Silicone
Electrical
Dielectric Strengh, kv  (ASTM  D877 )	45	30	40	43
Dielectric Strengh, 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

 

  

 

FIRE SAFETY

 

     New oil has a fire point of 360ْْ C, Well above the NEC minimum of 300ْْ C. Its flash point (330ْْ C) is higher than the fire point of most other currently available less-flammable fluids. New oil is certified as       a less-flammable dielectric coolant by Factory Mutual and Underwriters Laboratories in compliance with the listing requirements of the NEC. The National Fire Protection Association has no reports of fires or explosions involving transformers filled with the New oil.

  

     In large and small-scale tests, New oil has demonstrated greater fire resistance than other askarel substitutes. Based on large-scale testing, Factory Mutual Research concluded that the probability of a pool fire evolving the New oil was so low, that it does not require heat release rate to be determined nor applied in determining the installation requirements of the oil. Factory Mutual accepts New oil for transformers Approved per FM Standard 3990. OSHA has recognized this FM standard as fitting the definition of a Listed and Labeled product per NEC Section 110-3(b). The standard permits New oil filled transformers to be installed indoors, typically without sprinklers or vaults, with minimum clearance to walls of just 36 inches.

 

    Underwriters Laboratories developed Standard 340 to compare the fire hazard rating of different New oil.  The following graph demonstrates the favorable rating assigned to NEW OIL.

 

                       ENVIRONMENTAL & HEALTH

 

Envirotemp New oil is specifically formulated to minimize health and environmental risk. It is made of food-grade seed-oils and food grade performance enhancing additives. The base oils come from renewable resources – commodity seeds – and are easily recyclable and reusable. It does not require genetically altered seed oils. It has a trademark green tint to help differentiate it from other dielectric fluids. Its biodegradation rate is as good as the Environmental protection Agency® standard reference material, deemed " ultimately biodegradable " per EPA.

      In one of the most extremely sensitive acute toxicity tests, the Trout Fry Acute Toxicity test OECD G.L. 203, New oil out-performed other dielectric fluids by achieving a zero mortality rate throughout the entire test period.

      Because New oil is formulated from food-grade oils and additives, it is not subject to the Federal Regulation of Used Oils ( Title 40, No. 270 ). It is instead covered by the Edible Oil Regulatory Reform Act ( US Public Law 104-55, 1995), and therefore eligible for current and future regulatory relief. The option of alternative spill response procedures, such as natural bio-remediation, is now more viable. The New oil slightly higher viscosity when compared to conventional transformer oil, combined with its ability to polymerize when thin layers are exposed to warmth and airflow, helps prevent migration along the surface and into subsurface soils.

 

     New oil is not listed as hazardous by Environmental Protection Agency (EPA), Occupational Safety and Health Administration (OSHA) or the Department of Transportation (DOT

New oil

). Oral toxicity animal tests reported no signs of toxicological reactions, nor have human contact reactions have been reported.

New oil is not classified as bioaccumulating or mutagenic. It is a candidate for classification as an "Environmentally Preferred Product". Its Hazardous Material  Information System ( HMIS ) rating is 0 for both health and reactivity, and negative for carcinogenicity, National Toxicology Program (NTP), International Agency for Research on Cancer (IARC) monographs and OSHA Regulation. The thermal decomposition by-products from New oil are essentially limited to CO2 and H2O, with trace  CO depending on the availability of oxygen and temperature. New oil can not produce PCDFs (Furans), PCDDs (Dioxins), nor silicates.

 Medium Power Transformer Users List

Of New Oil

( Retrofill & New Installations )

 

    

Qty	Base MVA	HV (kV)	LV (kV)	End User	Manufacturer	Type	Cooling Class	Notes
1	200	161	19	Alliant Energy   Burlington, IA	Moloney	GSU	OFAF	Retrofill March 2004, Orig. Comm.1966
1	120	115	17.5	Alliant Energy   Cedar Rapids, IA	North American	GSU	OFAF	Retrofill May 2004, Orig. Comm.1994
1	50	69	12.47	Alliant Energy   Dubuque, IA	Westinghouse	GSU	OFAF	Retrofill October 2001, Orig. Comm.1957 With LTC
1	24	138	24x69	ATC   Depere,WI	Westinghouse	Dist	ONAN/OFAF/OFAF	Retrofill June 2004, Orig. Comm.1965
2	18	69	20	So.California Edison   California	Kuhlman	Dist	ONAN/ONAF/ONAF	Built October 2003& March 2004
1	30	34.5	0.562	Noranda Aluminum   New Madrid, MO	Fuji	Rectif.	ONAN/ONAF	Retrofill May 2004
1	30	115	6.9	Phelps Dodge   Miami, AZ	GE	Dist	ONAN/ONAF	Rebuild June 2004 by Siemens-USA With LTC
1	27	37	0.654	Noranda Aluminum   New Madrid, MO	Toshiba	Rectif.	ONAN/ONAF	Retrofill May 2004
1	25	19	13.2	Keyspan Energy   Queens, NY	Delta Star	Aux. Power	ONAF	Retrofill April 2004, Orig. Comm.2000

   

Qty	Base MVA	HV (kV)	LV (kV)	End User	Manufacturer	Type	Cooling Class	Notes
2	20	46	13.8	Phelps Dodge   Morenci, AZ	Ferranti-Packard	Dist	ONAN/OFAF/OFAF	Retrofill Sept 2004, Orig. Comm.1981
1	20	69	13.2	Maui Electric   Maalea, HI	ABB	GSU	ONAN/ONAF/ONAF	Retrofill October 2003, Orig. Comm.1990
2	14	69	4	Maui Electric   Maalea, HI	GE	GSU	ONAN/ONAF/OFAF	Retrofill Oct. 2003 &May 2004, Orig. Comm.1973
2	11	20	4.4	Alliant Energy   Burlington, IA	Allis Chalmers	Aux. Power	ONAN/ONAF	Retrofill March &May 2004, Orig. Comm.1966
1	10	18	2.4	Alliant Energy   Cedar Rapids, IA	GE	Aux. Power	OFAF	Retrofill May 2004, Orig. Comm.1965
1	10	69	4.16	People's Coop   Rochester, MN	Uptegraff	Dist	ONAN/ONAF	Built March 2004
1	10	33	11	Top Energy   New Zealand	LEEEC (China)	Mobile	ONAN/ONAF	Built November 2002
1	10	34.5	4.16	Forest Oil   Alaska	Cooper	Dist	ONAN/ONAF	Built November 2002