Answer / manoj sharma

Actually in india our all power system equipments are
designed to operate at 50 HZ. at lower frequency
performance of these component is poor in view of power,
life of equipment and safety. Motors will run slower,
transformers output will reduce, harmonics will increase in
power system. second thing when you run generator at
47.6HZ, your generator will loss its synchronism with the
grid.

Answer / a.mishra

According to Alternator voltage eqn., MAX.FLUX is inversly
proportional to FREQUENCY. If we reduce the frequency,then
max. flux will increase and the problem of core saturation
may happen. Other problem of iron losses will increase in
that alternator as well as the system equipments connected
to that source like Transformers,induction motors.

Answer / chandru williams

since all the equipments are designed to run at a frequency
of 50 Hz ( +/- 2 Hz) , low freuency will make the generator
to run at a speed less than the designed value thus
hindering the designed value of output.

Answer / vimal dixit

Generator will go out from synchronizm with grid.

Answer / piyush maghnani

A sthe generator frq reduced the inductive load will draw
high current which will result in poor power regulation.
the motors will not be running with standard speeds. there
will be increase in harmonics disturbances. your generator
will be overloaded & loose synchronisation with grid supply.

Answer / gunasekaran

turbine blade will be damaged frequency variation in india
only +-3% only.

Answer / vivekanand

Hi, do any legal standard for frequency tolerance
recommendation is there for the diesel fueled genset?
Do special criteria for frequency tolerance based on loading
is mentioned in any legal standard?

Answer / rahul

Nothing will happen because we can operate a frequency + or- 5%.

Answer / praveen420

In india we can't get power frequency less than 48.5hz.
Below this frequency power system violate.
If we run motor below this range than motor coil will be
burn due to more losses.

What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

2 Answers  

1.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?

4 Answers   BSNL,

How much current can a 3-1/2 core 100 mm wire carry?

3 Answers   Epitome, Focus, Focus Energy,

what is meant by switch fuse unit ?

3 Answers   Thermal Powertech Corporation India Ltd TPCIL,

Why battery rooms painted with dark colour

1 Answers   BAL, MSETCL Maharashtra State Electricity Transmission Co Ltd, Polycab,

what are the method of testing of transformer??

2 Answers   NCC,

Iin ESP why positive is grounded ? why not negative ?

0 Answers  

Will MCB tripped off, if there is an electric shock to Human body?

9 Answers  

How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

0 Answers  

Totally how much power will be consumed in 1 hour cotinuous running of electric train engine?

1 Answers   L&T,

Q-1 what are the structural and operational difference between a distribution and a power transformer? Q-2 what is skew in motors? Q-3 draw equivalent circuit of transformer Q-4 explain with phasors how pf is improved with loading in induction motors Q-5 DIFFERENT METHODS OF CABLE LAYING(interviewer asked if i heard new chemical based earthing system next) Q-6 pi model of medium length trans line Q-7 v/f control?why Q-8 vacuum circuit breaker operates in?

1 Answers   Vijai Electricals,

What is the Difference Between MCCB & ACB & VCB

3 Answers