What are the Differences Between Main Transformer Differential and Gas Protection? 1.The main transformer differential protection is designed and manufactured according to the principle of circulating current, and the gas protection is designed and manufactured according to the characteristics of gas generated or decomposed when...
What are the Transformer Lead Failures? 1. The joint is not welded securely or the screws on the joint are not tightened, local overheating or even joint meltdown causes wire breakage. 2. The lead and the fuel tank or lead phase distance is insufficient,...
What are the Possible Failures of Tap Switches? 1. No excitation tap switch failures 1) Insufficient contact spring pressure, uneven roller pressure to reduce the effective area, silver coating wear, contact with mud, resulting in poor contact switch, resulting in burns. 2) Poor contact of...
What are the Magnetic Circuit Failures of Transformers? 1.If the insulation pad on the wear heart screw crushed or wear heart outside screw bandage insulation is too thin, plywood and core insulation board is too thin or have crack, is likely to cause heart...
How to Deal with Transformer Overcurrent Protection Action? 1. If there is no obvious fault, send power. 2. Confirm that it is human error, transformer switch trip caused by protection or contact the main control dispatching to determine the system fault, resulting in the overcurrent...
What Should Be Checked for Transformer Differential Protection When Transformer is Put into No-load Operation? Transformer differential protection, in the new installation of the transformer must be under rated voltage to do 5 times of no-load test. The secondary wiring should be checked and...
What are the Insulating Fiber Materials Commonly Used in Motor Windings? What are Their Characteristics and Effects? 1. Insulation board 1) 50/50 cardboard (wood fiber and cotton fiber account for 50% each), it has good bending resistance, heat resistance, suitable for motor insulation protection layer....
What are the General Principles for Transformer Protection Installation? 1. Prevent gas from short circuit inside the transformer iron case and low oil level. 2. The defense transformer coil and lead line phase short circuit, large grounding current power grid side coil lead...
