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Product Description

Transformer oil

 Product variety
Product grade: U-10℃ transformer oil (general), U-30℃ transformer oil (general)
Can meet customer personalized customization needs, and can provide other grades of oil according to customer requirements
 
Technical Specification
Executive Standard: GB 2536-2011
 
Performance Characteristics
It has excellent oxidation stability and electrical insulation properties; high breakdown voltage and low dielectric loss factor, effectively preventing discharge phenomena and power loss under high-voltage electric fields; good thermal conductivity, with stable and reliable performance.
 
Product Application
Suitable for use in oil-filled electrical equipment such as transformers, reactors, instrument transformers, and bushings; it is a product that serves insulation and cooling functions.

Item		Quality indicators		Measured indicators		Testing methods
Minimum cold start operating temperature		-10℃	-30℃	-10℃	-30℃
Pour point/℃Not higher than		-20	-40	<-50	<-50	GB/T 3535
Kinematic viscosity/(mm³/s)not greater than\n40℃\n-10℃\n-30℃		12 1800	12 1800	8.604 968.1 -	9.127 1088	GB/T 265 NB/SH/T 0837
Water content/(mg/kg)not greater than		30/40		22.1	20.0	GB/T 7600
Breakdown voltage (meeting one of the following requirements)/kV not less than\n\nUntreated oil		30		35.2	36.9	GB/T 507
Density (20℃)/(kg/m²)not greater than		895		888.9	870.5	GB/T 1884 GB/T 1885
Dielectric dissipation factor (90℃)not greater than		0.005		0.00066	0.00033	GB/T 5654
Appearance		Clear and transparent, without any precipitates or suspended particles		Clear and transparent, without any precipitates or suspended particles.	Clear and transparent, without any precipitates or suspended particles.	Visual measurement
Acid value (as KOH) (mg/g) not greater than		0.010		0.006	0.003	NB/SH/T 0836
Water-soluble acid or alkali		NONE		NONE	NONE	GB/T 259
Interfacial tension/((mN/m)not less than		40		43.5	44.2	GB/T 6541
Total sulfur content (mass fraction)/%		No universal requirements.		0.0024	0.0005	SH/T 0689
Corrosive sulfur		Non-corrosive		Non-corrosive	Non-corrosive	SH/T 0804
Antioxidant additive content (mass fraction)/%		It cannot be detected.		It cannot be detected.	It cannot be detected.	SH/T 0802
2-furfural content/(mg/kg)not greater than		0.1		It cannot be detected.	It cannot be detected.	NB/SH/T 0812
Oxidation stability\n(120℃)	Total acid value (as KOH) mg/gnot greater than	1.2		0.81	0.43	NB/SH/T 0811
	Sludge (mass fraction)/%not greater than	0.8		0.27	0.11
	Dielectric loss factor (90℃)not greater than	0.500		0.33	0.17	GB/T 5654
Gas absorption/mm³/min		No universal requirements.		1.75	4.32	NB/SH/T 0810
Flash point (closed cup)/℃not less than		135		137	150	GB/T 261
Polycyclic aromatic hydrocarbon (PCA) content (mass fraction)/%not greater than		3		2.5	1.8	NB/SH/T 0838
Polychlorinated biph enyl (PCB) content (mass fraction)/(ng/kg)		It cannot be detected.		It cannot be detected.	It cannot be detected.	SH,/T 0803

Main Product

Company Profile

Shandong Zhongneng Hajiang Energy Technology Co. Ltd.Located in Qingdao, Shandong Province, the companywas founded in 1993. Since its establishment, it has been dedicated to solving difficult lubrication problems for enter-prises, assisting customers in promoting the localization of lubricants and maintaining efficient production momentum.We always uphold the mission of"Customer-oriented, creating maximum value for customers" and adhere to the spiritof "Innovation, Cooperation and Win-win".
In the course of development the company has kept abreast of market trends and made vigorous inroads into thelubricant OEM sector. With heavy investment in equipment talent recruitment and production line construction, wehave launched our own independent brands - Sea and Sky and CHNEO to refine our products, meet diversifedmarket demands, and provide professional technical support centered on customer needs.
Our company has signed official cooperation agreements with CNOOC, Sino pec and Compton, and has become an offical channel partner.Covering an area of more than 180 mu, the company has invested over 600 million yuan, with an automated production workshop of 50,000 square meters and an annual output of more than 100,000 tons. Our product portfolio covers high-end products such as automotive lubricants, industrial lubricants, marine lubricants, aviation lubricants, greases and metalworking fluids.

We select high-quality global resources and cooperate with cutting-edge institutions in the industry to build competi-tive advantages for the enterprise.Boasting strong R&D capabilities, the company has conducted extensive andin-depth cooperation with world-renowned companies including Lubrizol, Infineum, Afton and Chevron. We enjoyunique cooperative advantages in technical collaboration, product development and raw material supply, ensuring our products maintain a leading position in the industry.The company maintains partnerships with a number of research institutes and universities. The manufacturer hasestablished a strategic partnership with the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciencesand has jointly built a research and development center. Chinese Academy of Sciences, focusing on research and prod-uct development of key materials such as new lubricating materials, surface engineering materials and fine chemicals.
A variety of our products have obtained certifcation and passed strict OEM original certifications from ,Daimler Mercedes-Benz, Volvo, Cummins, MTU and other renowned manufacturers.Renowned for our outstanding scientific research capabilities and reliable product stability, we have won the trust ofour customers. Committed to continuous scientifc and technological innovation, management innovation and pursuitof excellence, we have always provided you with safe lubrication solutions

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