GENERATION OF AC HIGH VOLTAGE BY CASCADED TRANSFORMERS
For voltages higher than about 300 to 500 kV, the cascading of transformers is a big advantage, as the weight…
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CASCADED TRANSFORMERS METHOD FOR GENERATING AC HIGH VOLTAGE
For voltages higher than 400 KV, it is desired to cascade two or more transformers depending upon the voltage requirements.…
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EFFECTS OF VOLTAGE SAGS ON LIGHTING LOADS
Voltage sags may cause lamps to extinguish. Light bulbs will just twinkle; that will likely not be considered to be…
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SURGE PROTECTION OF ROTATING MACHINE
A rotating machine is less exposed to lightning surge as compared to transformers. Because of the limited space available, the…
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EFFECT OF PRESSURE ON BREAKDOWN VOLTAGE IN VACUUM
It has been observed that in case of very small gaps of less than a mm and the gas pressure…
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CLUMP MECHANISM
The vacuum breakdown mechanism based on this theory makes following assumption: (i) A loosely bound particle known as clump exists…
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SOLID DIELECTRICS USED IN POWER APPARATUS
The main requirements of the insulating materials used for power apparatus are: 1. High insulation resistance 2. High dielectric strength…
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GROUNDING AND BONDING
GROUNDING Grounding is one of the most important aspects of an electrical distribution system but often the least understood. Your…
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TOP 5 POWER QUALITY MYTHS
1) OLD GUIDELINES ARE NOT THE BEST GUIDELINES Guidelines like the Computer Business Equipment Manufacturers Association Curve (CBEMA, now called…
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MAJOR FACTORS CONTRIBUTING TO POWER QUALITY ISSUES
The three major factors contributing to the problems associated with power quality are: USE OF SENSITIVE ELECTRONIC LOADS The electric…