White Papers
CIGRE Southern Africa 2023 Conference
At the CIGRE Southern Africa 2023 Conference Ian Gray presented a paper on his experience related to the issues on the lack of reliability of these LV-GSUs. Ian Gray(MSAChem I No 51954) As we start to see a lot of new applications for transformers due...
Transformer failures are costly
By I.A.R. Gray(Senior Consultant-(MSAChem I No 51594)Oilwatch Transformer Service The Hillside aluminium smelter is located in Richards Bay, 200 km north of Durban, KwaZulu-Natal province, South Africa. The operation is fully owned and operated by BHP...
Condition Based Assessment of On Load Tap Changers
By I.A.R. Gray(Senior Consultant-(MSAChem I No 51594)Oilwatch Transformer Service INTRODUCTIONLoad tap changers (OLTCs) are a crucial element of utility networks, as they must operate in a precise fashion in order to maintain a constant voltage output. This...
Transformer Fluid maintenance is important
By Ian Gray( Oilwatch Transformer Services)MSA Chem I No 51954 Introduction.The primary purpose of transformer maintenance is to ensure the internal and external parts of the transformer and accessories are kept in good condition and “fit for purpose” and...
OilWatch Academy
Oilwatch AcademyOilwatch are proud to present two coursesOILWATCH Introduction to Oil Analysis and Condition Monitoring: This is a one-day introductory course to equip newcomers to the oil analysis and condition monitoring field with the basic needed tools...
What you need to know about PCB contaminated Transformer Oil
By I.A.R. Gray-Oilwatch Transformer Services What are PCBs? PCBs (polychlorinated biphenyls) are a group of synthetic oil-like chemicals of the organochlorine family. It was first described in technical literature in 1881 and commercial production commenced...
Evaluation of transformer solid insulation
TECHNICAL INFORMATIONPublished in Energize | August 2022 | 50 By I.A.R. Gray, Oilwatch Transformer ServiceLiquid impregnated cellulose materialsin the form of insulation paper are used in power transformers as electrical insulation and as mechanical support...
Prolonging the lifecycle of wind farm transformers
By David Poggiolini OILWATCH Transformer Laboratories is helping project developers and independent power producers improve the reliability of their wind farm transformers. These expensive and critical equipment items bolster turbine generator output from a...
Green hydrogen could help SA’s decarbonisation process
by Mariam Isa, independent journalist, and Chris Yelland, EE Business Intelligence South Africa’s ailing economy could get a new lease on life if it creates the policy and investment framework to build the infrastructure for large scale production of green...
Dissolved Gas Analysis (DGA) role in Improving the Reliability of Wind Farm Transformers in Southern Africa.
IAN Gray (Senior Consultant Oilwatch Transformer Laboratories) ABSTRACT Power transformers are expensive and critical equipment in power systems which play a significant role in the transmission and distribution of electricity. Although transformers are...
Cost Benefit Analysis Form Transformer example.
COST BENEFIT ANALYSIS PLANT OR LOAD FUNCTION: Transformer (T3) Supply of electricity to the Resin Plant COST OF PLANT DOWNTIME No of production days / annum 320 Cost of...
Transformer Oil Sampling Diagram
This link provides the suggested naming for oil sampled from high voltage electrical transformers.
Condition Based Assessment of On Load Tap Changers
By I.A.R. Gray(Senior Consultant-(MSAChem I No 51594) Oilwatch Transformer Service INTRODUCTION Load tap changers (OLTCs) are a crucial element of utility networks, as they must operate in a precise fashion in order to maintain a constant voltage output....
Improving Asset Reliability Through Understanding Transformer Health
Transformer Asset ManagementPower transformers are expensive and critical equipment in power systems and play a significant role in the transmission and distribution of electricity. Transformer asset managers’ focus is to achieve the...
Transformer asset management service expansion and lab accreditation
https://www.energize.co.za/article/transformer-asset-management-service-expansion-and-lab-accreditation Well known reliability solutions specialist Oilwatch have established another transformer insulating fluid laboratory in Durban to expand on its existing...
Transformer Solid Insulation (Furan analysis )
Evaluation of Transformer Solid Insulation I.A.R. Gray(Senior Consultant-(MSAChem I No 51594), Oilwatch Transformer Service Abstract Liquid impregnated cellulose materials in the form of Insulation paper are used in power transformers as electrical...
Dissolved gas analysis at an Aluminium Smelter
Practical Experience Gained from Dissolved Gas Analysis at an Aluminium Smelter These papers will provide a summary of Hillside Smelter Transformer faults detected by Dissolved Gas analysis at Early Life To read the updated version please go to...