Transformer Sampling, Part 3 – Sample Containers

In Part 1 of this series on sampling, we discussed what information is necessary to make a correct diagnosis of the state of your electrical equipment.  In Part 2 we discussed some of the issues involved in obtaining a good and representative sample.  In Part 3 we will review appropriate sample containers… (Read more...)

AGE Testing:

• What is the AGE test, and when should this test be performed? – Part 1
• What is the AGE test, and when should this test be performed? – Part 2

Corrosive Sulfur Test:

• What is the Corrosive Sulfur Test? – Part 1
• What is the Corrosive Sulfur Test? – Part 2
• What is the Corrosive Sulfur Test? – Part 3

Dielectric Breakdown Voltage Testing:

• Dielectric Breakdown Voltage Testing - Part 1 - Standard Methods
• Dielectric Breakdown Voltage Testing - Part 2 - ASTM D877
• Dielectric Breakdown Voltage Testing - Part 3 - ASTM D1816 for In-service Insulating Liquids - The History
• Dielectric Breakdown Voltage Testing - Part 4 - ASTM D1816 for In-service Insulating Liquids - The Fundamentals
• Dielectric Breakdown Voltage Testing - Part 5 - ASTM D1816 for In-service Insulating Liquids - What We Do With a Failed Test
• Dielectric Breakdown Voltage Testing - Part 6 - ASTM D1816 for New Insulating Liquids
• Dielectric Breakdown Voltage Testing - Part 7 - IEC 60156 for New and In-service Mineral Insulating Oil

Disolved Gas Analysis:

• Dissolved Gas Analysis (DGA) - Part 1 - The importance of DGA for new installations
• Dissolved Gas Analysis (DGA) - Part 2 - DGA for Transformer Warranty - Ten-Month Full-Oil Test

Furanic Compounds:

• Testing for Furanic Compounds in Insulating Liquids - Part 1
• Testing for Furanic Compounds in Insulating Liquids - Part 2 - How do you know if the paper is breaking down?
• Testing for Furanic Compounds in Insulating Liquids - Part 3 - When do we test for furans? (1)
• Testing for Furanic Compounds in Insulating Liquids - Part 4 - When do we test for furans? (2)
• Testing for Furanic Compounds in Insulating Liquids - Part 5 - Significant values
• Testing for Furanic Compounds in Insulating Liquids - Part 6 - Estimating Degree of Polymerization
• Testing for Furanic Compounds in Insulating Liquids - Part 7 - One final topic, for now, anyway

Hot Oil Cleaning:

• Hot Oil Cleaning - Part 1
• Hot Oil Cleaning - Part 2 - Life Extension

Load Tap Changers:

• LTC - Part 1 - Testing Insulating Liquids in Load Tap Changers – How does oil age in an LTC?
• LTC - Part 2 - Testing Insulating Liquids in Load Tap Changers – What causes accelerated filming in an LTC?
• LTC - Part 3 - Testing Insulating Liquids in Load Tap Changers – Liquid screen tests, moisture content, and dissolved gas analysis
• LTC - Part 4 - Testing Insulating Liquids in Load Tap Changers – Particle Count Distribution
• LTC - Part 5 - Testing Insulating Liquids in Load Tap Changers – Analytical Ferrography
• LTC - Part 6 - Testing Insulating Liquids Using Particles Analysis – Other Equipment Types
• LTC - Part 7 - Testing Insulating Liquids Using Particles Analysis – The Last Chapter (For Now, Anyway)

Liquid Power Factor:

• Testing for Liquid Power Factor in Mineral Insulating Oil - Part 1 - Introduction
• Testing for Liquid Power Factor in Mineral Insulating Oil - Part 2 - Acceptable, Questionable, and Unacceptable Values
• Testing for Liquid Power Factor in Mineral Insulating Oil - Part 3 - Applications

Moisture in Transformers:

• Moisture in Transformers, Part 1
• Moisture in Transformers, Part 2
• Moisture in Transformers, Part 3

PCB Testing:

• PCB Testing, Part 1
• PCB Testing, Part 2

Transformer Sampling:

• Transformer Sampling, Part 1 – Collecting Needed Information
• Transformer Sampling, Part 2 – The Sample

Other Topics:

• Inhibitor & Metals Testing Natural Ester Fluids
• Routine and Non-routine Sampling Intervals
• Will Changing Oil Solve an Acid Problem?
• Fluid Compatibility