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Home > Services > Services by Applications > Oil Test and Analysis

Oil Test and Analysis

The analysis of dielectric materials and the preventive maintenance programs of oil-insulated equipment can reduce the risk of unscheduled outages, ensuring asset performance and durability. Transformer active part and cellulosic insulation immersed in oil generate markers during their lifecycle. With analysis, oil variations can be detected at an early stage before failure occurs. Oil analysis provides critical information on asset health status, including electrical properties and ageing.

Oil analysis can be provided on all brands of high and medium voltage (HV/MV) transformers including OLTC, instrument, and on-board transformers.

GE provides oil tests and analysis performed in GE’s labs, along with a detailed report that includes remedial actions and condition severity as per IEEE® or IEC® standards.

GE Advantage
Oil Laboratories

GE’s hv/mv equipment services

GE performs reliable preventive and curative fluid analysis to provide an expert assessment of overall transformer condition:

  • Thermal and electrical faults are detected by measuring the concentration, respective proportions and rate of 13 characteristic gases.
  • Dielectric fluid condition is determined through dielectric strength, water content and the acidity index, verifying insulating and cooling properties.
  • Pollution level is evaluated by detecting PCBs in mineral oils and checking compliance with environmental regulations.
  • Cellulose insulation is assessed through furans analysis as well as new investigation methods using methanol/ethanol tests.

Other assessments can also be performed on a case-by-case basis depending on various criteria including the device’s age, brand, power, load, and criticality.

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For 30 years, GE oil analysis and transformer specialists have performed highly accurate tests in accredited oil labs which have pioneered DGA, furans and methanol analysis.

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The analysis report provides clear diagnosis and operational recommendations summarized in a simple colored-coded severity index.

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It can be accessed online or during an annual customer review. Analysis data and report can be integrated in GE Asset Performance Management platform.

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Our teams can respond to emergency situations, even during peak volume times.

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Based on transformer criticality and condition, GE can provide flexible services agreements to monitor data and alarms from DGA continuous online monitoring systems.

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Customers and channel partners can select from packaged solutions and book an order in the GE Grid Solutions Online Store.

France – Laboratory of Oil Services

France – Laboratory of Oil Services

Parc technologique du canal
8 rue Giotto
31520 Ramonville-St-Agne
Phone: +33 (0)562 190 560
Email: [email protected]

Certified ISO 9001, ISO 14001, OHSAS 18001, Accredited COFRAC based on ISO 17025

Australia - Transformer Oil Testing Laboratory

Australia - Transformer Oil Testing Laboratory

Unit4B/29-41 Lysaght Street Acacia Ridge,
QLD 4110
Phone: +61 408 885 801
Email: Email Contact

Certified ISO 9001, ISO 14001, OHSAS 18001, Accredited National Association of Testing Authorities (NATA)

Phase-shifting Transformers

Turkey - Transformer Oil Testing Laboratory

Baris Mah. Guney Yanyol Cad. No:320 Gebze
41410 Kocaeli
Phone: +90 (0) 262 648 3300 Ext 3373-3390
Email: Email Contact 1 and Email Contact 2

Certified ISO 9001, ISO 14001, OHSAS 18001, Accredited Turkish Accreditation Agency TS EN ISO/IEC 17025