Transformer Sevices and Repairs

By: Global Power Test Sdn Bhd  05-05-2016
Keywords: Frequency Response Analysis, Partial Discharge Analysis, 230 kV,

1. On-site oil sample collection for deep and thorough analysis in Select Solution Pte Ltd lab in Singapore. Test results are given 48 hours after collection. Some of the chemical analyses performed at the lab are: --Dissolved Gas Analysis (Headspace DGA) --Oil Colour and appearance, water content and acidity --Interfacial tension, sediment and sludge --Dielectric dissipation factor, volume resistivity and electric breakdown voltage --Monitoring of inhibited oils --Particle Profile --Furan and Passivator analysis (included estimated DPv) --Degree of polymerisation of paper samples --SF6 gas analysis 2. Maintenance of cast-resin and dry-type transformers 3. Servicing of distribution and power transformers up to 300MVA, 230kV 4. Renewal of gasket for main tank, link box, HV and LV bushings, radiator fins and tap changer compartment 5. High vacuum purification and filtration of transformer oil 6. Complete replacement of transformer mineral or silicon oil 7. Dissolved gas-in-oil analysis (DGA) by gas chromatography 8. Oil tests for acidity, water content, colour, dielectric strength and power factor (tangent-delta) 9. Winding resistance, insulation resistance and turn ratio tests 10. Secondary current injection tests on relays 11. Functional checks on Buchholz relay, temperature pressure alarm and tripping devices 12. Redesign, convert and upgrade of transformers 13. Frequency Response Analysis 14. Partial discharge analysis

Keywords: 230 kV, 300 MVA, chemical analyses, Frequency Response Analysis, high vacuum purification, Oil Tests, on site oil sample collection, Partial Discharge Analysis, upgrade transformer,

Contact Global Power Test Sdn Bhd


Print this page


Other products and services from Global Power Test Sdn Bhd


oil filtration

chemical analysis of the insulating oil is the best way to assess the transformer condition


Performance testing & evaluation

Oil Filtration