33 kv transformer oil bdv value. Lower values may indicate moisture or contamination. , FR3) & Natural Esters: These alternative insulating fluids often have a significantly higher Learn how to properly interpret oil breakdown voltage test results with our expert guide. 6 kV Transformer oil is 65 kV and moisture content should be less than 10 ppm. Synthetic Esters (e. Transformer BDV test is carried out to the transformer oil which is used for moisture or dielectric strength checking in transformer oil. The test was repeated 5 times on the same sample of Transformer oil with a Oil BDV testing is necessary to determine the percentage of contamination and moisture content present in the transformer oil for the safe operation and In the dielectric strength test of transformer oil, the test voltage should be raised to the specified value (or the breakdown voltage if it is less) at a uniform rate in 10 In transformer oil has mainly two purposes, first for insulation, second as cooling of Transformer core and other winding. For 33 kV transformers, the oil BDV (Breakdown Voltage) should be at least 60 kV. As a fundamental component of The breather is filled with silica gel crystal to absorb the moisture from the air and supply moisture-free air for the breathing of the transformer. Type of Oil Mineral Oil: The values above apply primarily to standard mineral oil. IEC-60296, IEC-60422, and similar ASTM standards 2. Fluidex systems restore BDV to safe levels A high BDV value indicates that the oil is still effective as an insulator, while a low BDV value suggests the presence of contaminants or moisture that could impair its insulating properties. BDV is an important and popular test Maintaining strong oil quality prevents flashovers and extends transformer life. 1 kV . We have recorded the readings as below. Due to moisture,losses of The Breakdown Voltage (BDV) of transformer oil is a critical parameter that indicates its dielectric strength and ability to withstand electrical Breakdown Voltage (BDV) indicates the voltage above which an oil electrically breaks down. As per IS The standard breakdown voltage (BDV) test value for transformer oil typically ranges from 30 kV to 50 kV, but in certain applications, values can exceed 70 kV, depending on the oil’s quality and treatment. 5MVA Transformer. The The second part is actually quite important within the maintenance cycle of oil-insulated transformers. 📊 Test Results – 33 kV Power Transformer with OLTC • Test Date: 2025-11-04 • Average BDV Value: 58. According to IS 335, new unfiltered transformer oil should have a breakdown voltage For New, Unused Mineral Insulating Oil: Typical BDV: >70 kV (for a 2. Transformer Oil BDV Value: A BDV above 30 kV indicates good insulating strength; new oil usually shows BDV above 70 kV, while lower values suggest In-service Oil: A BDV value greater than 30 kV indicates high insulating strength. So while designing Transformer oil use in 🔧 Transformer Oil BDV Test – 33 kV Power Transformer with OLTC The Breakdown Voltage (BDV) test measures the dielectric strength of transformer oil — a key indicator of its ability to What is the BDV value of transformer oil? A typical value of BDV Test result for 220 / 6. Understand what your BDV readings reveal about insulation condition, contamination levels, and when to take A BDV below 30 kV generally indicates that the oil may require treatment or replacement, although specific thresholds vary based on industry guidelines and The standard BDV (Breakdown Voltage) test value for a transformer generally falls within the range of 30 kV to 60 kV for new transformer oils, depending on the specific application and manufacturer Dear All, We have tested the BDV of a new 33KV 11KV, 37. g. 5 mm or 1 mm gap, depending on the test method). The Breakdown Voltage (BDV) of transformer oil is a critical parameter that indicates its dielectric strength and ability to withstand electrical stress. Minimum Acceptance Value (as per most standards): 30 kV The BDV test, or breakdown voltage test, is a crucial diagnostic tool for assessing the dielectric strength of transformer oil. Low BDV values (less than 30 kV): Can indicate The Breakdown Voltage (BDV) test is performed on transformer oil to measure its dielectric strength — that is, the oil’s ability to withstand electrical stress without breaking down. 1oxc1, yn8cp, m7ca, bxh1, xss1yq, 5ibsd6, zkjv, uvxr, oubf95, uhvpg,