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What does the ka rating of a circuit breaker mean?
Most times it is the surge current the breaker can withstand in kilo-amps. A normal breaker will see several thousand amps in a short condition. The breaker must be able to withstand and break that current safely.
Up to how much years we can use a 1000 kva transformer?
It depends on the transformer design, type, cooling, maintenance, fault experiences, operating temperature, and loading (I'm sure there's other things that impact it as well). A lot of equipment is rated for 10-20ish years of operation; I would assume your transformer may fall under that. That does not mean that it is dead after 20 years though; I know of several >10MVA transformers that are 60+ years old and still in use. Some have been rewound, some have not. And it doesn't mean that it is 100% guarunteed to run for 20 years. A really bad fault with slow clearing time could cook it the day after you install it.
What does BIL basic insulator level really mean and its differences with Impulse withstand voltage and power frequency withstand voltage?
BIL is basic insulation level as per you or in other words it would be "basic impulse level" which implies the limit up to which an insulator could withstand impulse due to lightning strikes. Impulse is generated on the insulation due to the high voltage surges and spikes due to lightning strikes. BIL is generally much higher as compared to power frequency withstand voltage. In other words BIL is lightning Impulse withstand voltage. Impulse withstand voltage is the voltage that is generated due to switching operation and it's much higher than power frequency withstand, but BIL or the lightning withstand voltage is a the voltage level that an insulation can withstand during surge or lightning strikes.
What does it mean to source current?
the source current is the current that flows from the power source.
What mean by va in current transformer?
Its simply multiplication of voltage applied and current.
What does the ka rating of a circuit breaker mean?
Most times it is the surge current the breaker can withstand in kilo-amps. A normal breaker will see several thousand amps in a short condition. The breaker must be able to withstand and break that current safely.
In writing a research paper what does Amp mean?
Amp can be short for Ampere, the unit of electrical current. It is also short for amplifier.
Does a dimmed command on a short or full menu mean that it is not available for a current selection?
Yes.
What is the difference between 1sec and 3sec duration of short-circuit withstand capacity?
The difference between 1 second and 3 seconds is 2 seconds. In terms of short-circuit withstand capacity, it can mean the difference between no damage and damage occurring to the equipment and wiring. Heat rises extremely fast in a short-circuit situation, and you want your protective device to trip before damage is done.
What do current liabilities mean in accounting?
Current Liabilities in accounting are amounts that are owed by a business. The two types of current liabilities are short-term and long-term liabilities.
When the current will be short and open circuited?
Open circuit has no current, so does that mean any resistor in series with it, has no current ,so it can be ignored for analysis( v=ir so 0 current means 0 V) for finding lets say the Thevenin equivalent.? Now for Short circuit, do we ignore a resistor in series with the short, because current will take path of least resistance and ignore that resistor? Also can short circuit have voltage through it ?
What does 0.20 mean?
Amps is a unit of measure for current and .2 is just the measurement. (Amps is short for Ampere's)
What does 0.20 Amps mean?
Amps is a unit of measure for current and .2 is just the measurement. (Amps is short for Ampere's)
What does roof load rating mean?
The roof load is a rating that determines how many pounds per square foot the roof will withstand. Most roofs are rated above 300 pounds per square foot or more.
What is mean by resilience?
The ability to withstand pressure and punishment of different kinds.
How does good regulation affect the short-circuit current of an ac generator?
I assume by good regulation you mean a minimal voltage drop internal to the generator. Minimizing this will inherently increase the short circuit current, because it requires minimizing the internal impedance of the generator.
What does hardiest mean?
The most robust, strongest, most able to withstand things
