Quality Insulating Transformer Oil Oxidation Stability Low Pour Point PetroChina Kunlun I factory

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Insulating Transformer Oil Oxidation Stability Low Pour Point PetroChina Kunlun I

Name: Insulating Transformer Oil Oxidation Stability Low Pour Point PetroChina Kunlun I
Brand: Qiruihang Lubricants (Shanghai) Co., Ltd.
SKU: KI25X / KI45X
Price: Negotiable USD
Availability: InStock

Specifications

Highlight:

Transformer Oil

,

Insulating Oil

,

Low Pour Point Transformer Oil

Product Name:

Oxidation Stability Insulating Transformer Oil

Application:

500 KV And Above Large-Capacity Power Transformers And Reactors

Product Type:

Transformer Oil / Insulating Oil

Grades:

KI25X / KI45X

Executive Standard:

GB 2536-1990

International Standards:

IEC 60296-2003, DIN 57370, ASTM D3487-2000

Density (20 C):

Not More Than 895 Kg/m3

Kinematic Viscosity (40 C):

Not More Than 13 Mm2/s (Grade 10, 25); Not More Than 11 Mm2/s (Grade 45)

Pour Point:

Not More Than -7 C (Grade 10); Not More Than -22 C (Grade 25)

Flash Point:

At Least 140 C (Grade 10, 25); At Least 135 C (Grade 45)

Acid Value:

Not More Than 0.03 MgKOH/g

Breakdown Voltage:

At Least 35 KV (2.5 Mm Gap, On Delivery)

Dielectric Dissipation Factor (90 C):

Not More Than 0.005

Interfacial Tension:

At Least 40 MN/m (Grade 10); At Least 38 MN/m (Grade 45)

Tags:

insulating fluid

insulating transformer

transformer mineral oil

Key Attributes

Brand Name: Kunlun (PetroChina)

Model Number: KI25X / KI45X

Place of Origin: China

Certification: GB 2536-1990, IEC 60296-2003, ASTM D3487-2000

Minimum Order Quantity: 10 Drums (170 kg each)

Price: Negotiable based on order volume

Supply Ability: 500 Metric Tons per Month

Delivery Time: 7-15 days after order confirmation

Payment Terms: T/T,L/C,Western Union

Standard Packaging: Export-standard drum, net weight about 170 kg; other packaging on request

Product Description

PetroChina Kunlun Insulating Transformer Oil Oxidation Stability Low Pour Point

PetroChina Kunlun KI25X / KI45X transformer oil is a naphthenic-base insulating oil produced from moderately refined, low-viscosity, low-pour-point base oils blended with a composite antioxidant additive package. It delivers rapid heat transfer, excellent oxidation stability and outstanding electrical performance, and is manufactured under strict quality control procedures for stable, reliable performance in power transformers and reactors.

Product Overview

Kunlun transformer oil is blended from moderately refined naphthenic base oil (with a small proportion of intermediate base oil) and a dedicated antioxidant system. This gives the transformer oil rapid heat transfer, a long oil life and the electrical performance required for high-voltage insulation. KI25X and KI45X meet the GB 2536-1990 specification, and KI45X additionally satisfies IEC 60296-2003, DIN 57370 and ASTM D3487-2000, so the insulating oil is suitable for demanding, large-capacity power equipment.

Key Performance Features

Oxidation stability: resists the influence of air, moisture and high voltage, so the transformer oil is slow to age and degrade, giving a longer service life.
Good low-temperature performance: a low pour point keeps the insulating oil flowing and helps equipment start and run normally even in severe cold regions.
Good fluidity and heat transfer (hydraulic transfer): smooth circulation carries heat away from the core and windings, reduces wear and helps extend the operating life of the equipment.
Viscosity-temperature property: a stable, continuous viscosity maintains a complete oil film with only small viscosity change, so the system works smoothly.
Excellent electrical performance: high-quality insulating oil for reliable dielectric behaviour in high-voltage transformers and reactors.
Clean operation and long oil life: good flowability, clean and quiet operation, extended machine life, reduced oil change frequency, and reliable high and low temperature protection.

Standards and Specifications

Parameter	Specification
Product	PetroChina Kunlun KI25X / KI45X Transformer Oil (Insulating Oil)
Product Type	Naphthenic-base transformer oil / insulating oil
Grades	KI25X / KI45X
Base Oil	Moderately refined naphthenic base oil (with minor intermediate base oil)
Executive Standard	GB 2536-1990
Additional Standards (KI45X)	IEC 60296-2003, DIN 57370 (A), ASTM D3487-2000
Oxidation Stability	Excellent anti-oxidation performance
Low Temperature Performance	Low pour point, good low-temperature fluidity
Electrical Performance	Excellent electrical insulating properties
Heat Transfer	Rapid heat transfer, low viscosity
Viscosity-Temperature Property	Stable viscosity, complete oil film

Typical Data

Item	10	25	45	Test Method
Appearance	Transparent, free of suspended matter and mechanical impurities			Visual
Density (20°C), kg/m³	≤895			GB/T 1884
Kinematic Viscosity (40°C), mm²/s	≤13	≤13	≤11	GB/T 265
Kinematic Viscosity (-10°C), mm²/s	—	≤200	—	GB/T 265
Kinematic Viscosity (-30°C), mm²/s	—	—	≤1800	GB/T 265
Pour Point, °C	≤-7	≤-22	Report	GB/T 3535
Freezing Point, °C	—	—	≤-45	GB/T 510
Flash Point, °C	≥140	≥140	≥135	GB/T 361
Acid Value, mgKOH/g	≤0.03			GB/T 264
Corrosive Sulfur	Non-corrosive			SH/T 0304
Oxidation Stability	≤0.2			SH/T 0206
Acid Value after Oxidation	≤0.05			—
Sediment after Oxidation	None			GB/T 259
Water-Soluble Acids or Alkalis	None			GB/T 259
Breakdown Voltage (2.5 mm gap, on delivery), kV	≥35			GB/T 5075
Dielectric Dissipation Factor (90°C)	≤0.005			GB/T 5654
Interfacial Tension, mN/m	≥40	—	≥38	GB/T 6541
Water Content, mg/kg	Report			GB/T 7600

Applications

KI25X / KI45X transformer oil for 500 kV and above, large-capacity power transformers
Reactors and similar electrical equipment
High-voltage insulation and cooling in power transmission and transformation equipment

Recommended Usage and Handling

Kunlun transformer oil is intended for use as an insulating and cooling medium in power transformers and reactors. Keep the insulating oil clean and dry, free of moisture and particulate contamination, since moisture and impurities reduce dielectric strength. Store it in sealed containers in a dry, ventilated area away from ignition sources, and follow normal oil-filling and filtration procedures when commissioning equipment. Regular sampling and testing help confirm the transformer oil remains within specification and support a long oil life.

Frequently Asked Questions

Q: What is PetroChina Kunlun KI25X / KI45X transformer oil used for?

A: It is an insulating oil for 500 kV and above, large-capacity power transformers and reactors, providing both electrical insulation and heat transfer.

Q: What standards does this transformer oil meet?

A: KI25X and KI45X meet GB 2536-1990. KI45X additionally satisfies IEC 60296-2003, DIN 57370 (A) and ASTM D3487-2000.

Q: Why is oxidation stability important in an insulating oil?

A: Good oxidation stability means the transformer oil resists ageing caused by air, moisture and high voltage, so it keeps its electrical performance for longer and extends the oil service life.

Q: How should the insulating oil be packaged and delivered?

A: It is supplied in export-standard drums with a net weight of about 170 kg, and can also be arranged in other packaging on request.

Why Choose PetroChina Kunlun KI25X / KI45X Transformer Oil

Backed by PetroChina Lubricant Company and the GB 2536-1990 specification, Kunlun KI25X / KI45X transformer oil combines excellent oxidation stability, a low pour point, rapid heat transfer and outstanding electrical performance. Manufactured under strict quality control from stable, well-defined base oils, it is a dependable insulating oil for 500 kV and above power transformers and reactors.

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