Uncategorized
-
People don’t understand
What’s something most people don’t understand? Most people do not understand the way of thinking of the person they face or tackle. Read more
-
Buchholz Relay Testing in Transformers
The Buchholz Relay is a protective device used in oil-filled transformers to detect internal faults like insulation failure, overheating, or arcing. It is a gas-actuated relay installed between the main tank and the conservator of the transformer. — Purpose of Buchholz Relay Testing: 1. Ensure Proper Functioning – Verifies the relay’s response to internal transformer Read more
-
The Turns Ratio Test (TTR Test) is a diagnostic test performed on transformers to verify the accuracy of the turns ratio between the primary and secondary windings. This test ensures that the transformer is functioning correctly and meets design specifications.
Purpose of the TTR Test: 1. Verify Winding Ratio: Confirms the proper voltage transformation. 2. Detect Issues: Identifies winding short circuits, open circuits, incorrect connections, or core problems. 3. Ensure Proper Functioning: Helps maintain efficiency and prevent failures. Procedure of the TTR Test: 1. Test Setup: A specialized TTR meter is used. The transformer must Read more
-
Transformer Oil Testing (Dielectric Strength, DGA, Moisture Content, etc.)
Transformer oil acts as an insulator and coolant. Regular testing helps detect insulation breakdown, contamination, and early faults. Below are the essential tests for transformer oil: — 1. Dielectric Strength (BDV – Breakdown Voltage Test) This test measures the oil’s ability to withstand high voltage without breaking down. Test Equipment: BDV (Breakdown Voltage) Test Kit Read more
-
Insulation Resistance (IR) Test for Transformers
The Insulation Resistance (IR) Test is conducted to assess the condition of insulation in a transformer’s windings and ensure there are no breakdowns due to moisture, dirt, or aging. — Test Equipment Required Megger (Insulation Resistance Tester) – 500V, 1000V, 2500V, or 5000V depending on transformer rating. HV Gloves & PPE – for safety. Multimeter Read more
-
Test perform on transformer
1. Insulation Resistance Test 2. Transformer Oil Testing (Dielectric Strength, DGA, Moisture Content, etc.) 3. Turns Ratio Test (TTR Test) 4. Winding Resistance Test 5. Buchholz Relay Testing 6. Sweep Frequency Response Analysis (SFRA) 7. Earth/Ground Resistance Testing Read more
-
Routine maintenance of a transformer is essential to ensure its reliable operation and long lifespan. Here are the key maintenance tasks:
1. Daily Maintenance Check for any unusual noises, vibrations, or overheating. Inspect the transformer for oil leaks. Monitor load and voltage levels. 2. Monthly Maintenance Inspect oil levels in conservator and bushings (for oil-filled transformers). Check for dust accumulation and clean bushings and insulators. Verify proper ventilation and cooling system operation. Inspect for loose connections Read more
-
SECERATE SKILL
What’s a secret skill or ability you have or wish you had? Energy conversion idea’s Read more
Electtechknownews 