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Once derating factor is considered the size of cable for perticular electrical load increased by the multipling factor.i,e if 2.5MM2 cable is capable to carry 14amp. of current in general then with 40% of derating fator it can carry only 8.4amp.
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Why you take 0.95 as standard power factor?
When you need to calculate the estimated load or load current during initial design phase or so, you need to assume a value for power factor which is realistic. 0.95 is a realistic value.
Does the current reach its maximum peak value at the same instant time in as does the voltage?
Yes if the power factor is unity.Additional AnswerOnly if the load is purely resistive. For a resistive-inductive (R-L) load, the current will reach its maximum value after the voltage reaches its maximum value, and we say the current is 'lagging the voltage'. For a resistive-capacitive (R-C) load, the current will reach its maximum value before the voltage reaches its maximum value, and we say the current is 'leading the voltage'.The angle of lag or lead is called the circuit's 'phase angle' and the cosine of that angle is termed the circuit's 'power factor'. So, for a purely-resistive circuit, the phase angle is zero and the power factor is 1 ('unit'). For R-L circuits, the power factor is less than 1, and is described as 'lagging'. For R-C circuits, the power factor is also less than 1, and is described as 'leading'.
What is the full lode current of a 25kw 400v3phase induction motor having 50.8 power factor?
Power factor is the cosine of the phase angle between voltage and current. As such, it will have a value between +1 and -1. 50.8 is not a valid value. Please restate the question.Another AnswerPower factor is sometimes expressed as a percentage, rather than per unit, so presumably you are referring to a power factor of 50.8% or 0.508. Presumably, too, by 'full-load current', you are referring to the machine's line currents.So, you can use the following equation to determine the line currents:Since P = 1.732 E (line) I (line) x (power factor)So, I (line) = P / [1.723 E (line) x (power factor)]
An AC has a peak value of 12 amps what is the average value of the current?
i think average value of current in ac current is zero.
What is the power factor in pure inductors explain?
The power factor (cosine of phase angle) of pure inductor is zero because the phase angle between current and voltage is 90 degrees .If the value is substituted in the formula It will be zero.
What is the meaning of derating factor?
A transistor rating that tells how much the maximum allowable value of PD decreased for each 1°C rise in ambient temperature.
What is the relationship between present value factor and annuity present value factor?
Present value annuity factor calculates the current value of future cash flows. The present value factor is used to describe only the current cash flows.
What is the relationship between the present value factor and annuity present value factor?
Present value annuity factor calculates the current value of future cash flows. The present value factor is used to describe only the current cash flows.
Definition of derating?
The verb derating means to assess the value of (some types of property, such as agricultural land) at a lower rate than others for local taxation; operation of a machine at less than its rated maximum power in order to prolong its life.
Of what value is the power factor?
Power factor value varies from zero to one depending upon the angle between vectorial value of voltage & current and equals to cos fi ( where fi is the angle between i & v)
What is value of power factor?
Power factor value varies from zero to one depending upon the angle between vectorial value of voltage & current and equals to cos fi ( where fi is the angle between i & v)
What effect a capacitor has on a supply current on an inductive load?
it will improve the power factor... The angle between voltage and current will decrease depends on capacitor value.
How much is a 2001 saleen s281 with 65000 miles worth?
Ok...since the condition of the vehicle is a factor that would need to be considered in determining your vehicles value, there is no one right answer to the question. Your best bet is to go to:www.kbb.com This is the official Kelly Blue Book website that will factor in the condition and then determine the most current value of your vehicle. Best of luck!
Is the present value factor the exponent of the future value factor?
The present value factor is the exponent of the future value factor. this is the relationship between Present Value and Future Value.
Why you take 0.95 as standard power factor?
When you need to calculate the estimated load or load current during initial design phase or so, you need to assume a value for power factor which is realistic. 0.95 is a realistic value.
Why Voltage x Current do not equal rated power?
In an AC system power is equal to Voltage x Current x Power factor. Power factor is not constant and depends on the type of the load. Ideal value of the Power factor is 1, where as practically remains less then 1.
Does the current reach its maximum peak value at the same instant time in as does the voltage?
Yes if the power factor is unity.Additional AnswerOnly if the load is purely resistive. For a resistive-inductive (R-L) load, the current will reach its maximum value after the voltage reaches its maximum value, and we say the current is 'lagging the voltage'. For a resistive-capacitive (R-C) load, the current will reach its maximum value before the voltage reaches its maximum value, and we say the current is 'leading the voltage'.The angle of lag or lead is called the circuit's 'phase angle' and the cosine of that angle is termed the circuit's 'power factor'. So, for a purely-resistive circuit, the phase angle is zero and the power factor is 1 ('unit'). For R-L circuits, the power factor is less than 1, and is described as 'lagging'. For R-C circuits, the power factor is also less than 1, and is described as 'leading'.
