Answer / shan80

The working principal of transformer is step up / step down
voltage without any chage in frequency.
So frequency remains same at both sides step up side or
step down side, normaly it is 50Hz.

Answer / fransis

Generally Frequency is maintained by generation station for
a common distribution system.It is not possible to change
frequency while step up or step down the voltage on any
transformer.
This is also possible to change the frequency by term of
electronic controll device like in soft starter. In the soft
starter frequency is controlled with voltage to control the
speed of motor.

Answer / parin

it is possible to step up 220v to 11kv using transformer,transformer does not change frequency,ti only transfer power one stage to another with constant freq.

Answer / amarnath

it should be or it is 49.5 to 50.5 Hz normally. If this is
not the frequency then we need to have a capacitor to
improve the frequency and power factor.

Answer / rahul

frequency is same that of 220kv,220/11kv is possible.it
depends on secondary windings

Answer / azhar ali

It doesn't matter if you step up or step down the voltage, frequency will always remain the same as per principle of transformer it transforms voltage without any change in frequency.

What is the maximum allowed kwa through 2.5mm cable. Electric company installed 2 electric meter at my premises . Two jumper wires of 2.5 mm are used to connect . 2 single phase meters with allowable load 6 and 3 kwa. These jumper wires are taken from a 3 phase electric meter. Meters are in open Sun. What max load these wires can take.

0 Answers   KESC,

How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

how to calculate neutrel current

2 Answers  

Explain the process of commutation in a dc machine.

0 Answers  

WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

0 Answers   L&T,

Is it possible to make 0.75KW motor earthing from MCC panel by using the 1.5 SQMM, 4 core cable, means 3 core for 3 Phases & 1 core for Earth terminal?

4 Answers  

What is Torque Vector Control in VVVF Drives?

6 Answers   PEL, Schneider,

what is meant by a slip?

10 Answers  

why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i check with clamp meter it shows 25 A?

4 Answers   OPS,

what is the calculation formula for motor starting torque,running torque, running torque.

0 Answers  

why induction motors are of lagging type and not leading type

9 Answers   Bhel,

how to wiring 20 hp motor get completated?

1 Answers   Alchemist,