Oil properties analysis    Dissolved gas analysis in oil     Furanic compounds analysis in oil

               Corrosive sulfur in oil         Oxidation Inhibitor content in oil
The laboratories certified by the National Certification Foundation (TAF) and ISO-9001 can analyze, diagnose and evaluate the insulating oil characteristics of oil-immersed transformers, the gas in the oil, the furfural in the oil . And provide the industry's first online query service platform, so that customers can query the complete maintenance information of their transformers in real time to prevent potential power outages.
Oil properties analysis

(1) Trace moisture -ASTM D1533

The level of moisture will cause abnormal fluctuations in the insulation performance of the oil, which is one of the important factors affecting the dielectric strength of the oil and the service life of the transformer。


(2) Acid value - ASTM D974

During long-term operation, the transformer oil gradually produces acidic oxides and sludge and other degraded substances due to oxidation, which increases the acid value of the oil and affects the insulation performance of the transformer oil。


(3) Interfacial tension - ASTM D971

The presence of polar dissolved pollutants (acidic oxides and sludge) in transformer oil will reduce the interfacial tension and affect the quality of the oil. It is one of the important indicators for judging the degree of oil deterioration and polar pollution.。


(4) breakdown voltage - IEC 60156

This method uses spherical electrodes. The moisture, acid value and impurities of the oil will affect the strength of the dielectric. This item is an important indicator for judging whether the oil is subjected to electrical stress.。


(5) Color- ASTM D1500

Preliminary inspection of the color and deposits in the oil。

Dissolved gas analysis in oil

Dissolved gas in the oil can diagnose the operating condition of the transformer under the active state, which has been widely used worldwide。

When abnormal signs such as overheating, corona or discharge occur inside the transformer during operation, the insulating oil will be decomposed into small molecular gases (such as H2, CO, CH4, C2H6, C2H4, C2H2, etc.), so these gas molecules are analyzed The level of concentration and the mutual proportion distribution can diagnose the cause of abnormality and whether it needs to be dealt with professional advice。

The gas analysis and detection method in transformer oil is carried out in accordance with ASTM D3612 standard, analyzing the concentration of nine component items, including O2 (oxygen), N2 (nitrogen), H2 (hydrogen), CO (carbon monoxide), CO2 (carbon dioxide), CH4 (methane) , C2H6 (ethane), C2H4 (ethylene), C2H2 (acetylene), etc.。

Furanic compounds analysis in oil

The analysis of furfural compounds in oil can diagnose whether the insulation paper inside the transformer is deteriorated in the live state, and can accurately estimate the degree of polymerization of the insulation paper, and evaluate the remaining life of the transformer. It is used internationally to evaluate the quality of the insulation paper in the running transformer Important methods and indicators。

When the insulation paper part of the transformer is in operation, such as local overheating, sudden electrical stress, high water content, high oxygen content and other abnormal signs, the insulation paper will gradually decompose into five furfural decomposition compounds (such as: 2-furaldehyde) , 2-furfural alcohol, 5-hydroxymethyl-2-furaldehyde, 2-acetfuran, 5-methyl-2-furaldehyde, etc.), by analyzing the concentration of these individual furfural decomposition products, it can be effective and accurate Assess the degree of polymerization of the current solid insulating paper, and grasp the condition of the insulating paper and the evaluation of the remaining life. The analysis and detection method of furfural in transformer oil is carried out in accordance with ASTM D5837 standard. The concentration of five compounds is analyzed, including 2-furfural (2FAL), 2-furfural alcohol (2FOL), 5-hydroxymethyl-2-furfural (5H2F), 2 -Acefuran (2ACF), 5-methyl-2-furaldehyde (5M2F), etc.。

Corrosive sulfur in oil

Transformers will cause failures due to the presence of corrosive sulfur in the insulating oil. Copper sulfide will be produced after corrosive sulfur erodes the copper. The copper sulfide will be transferred to the insulating paper, degrading the dielectric strength and causing serious transformer failures. The purpose of this analysis is to provide a method for identifying and evaluating the corrosive sulfur compounds in the insulating oil of the transformer in operation, so as to maintain the normal operation of the transformer。

Oxidation Inhibitor content in oil

The analysis of antioxidant content in transformer oil is performed using FTIR and in accordance with ASTM D2668 standard method. When the concentration of antioxidant in transformer oil is less than 0.1%, it is recommended to add antioxidant again to ensure that the insulating oil in the transformer will not accelerate aging。

Contact us

E-mail: ampletech@mail.antung.com.tw

TEL: +886-3-328-3200

FAX: +886-3-328-3522

Ampletech Technology Co., Ltd.

​33378 No. 43, Dinghu Road, Guishan District, Taoyuan City

Kaohsiung Branch

​81461 No.5-1, Lane 735, Section 3, Water Pipeline, Renwu District, Kaohsiung City