For changing the direction of rotation of a single phase
induction motor u reverse either starting winding
connection or running winding (but do not change both
winding connection otherwise it will rotate in the same
direction). For this you can simple reverse the connection
of capacitor.
For three phase motor interchange the connection of any two
phase.
For changing the direction of rotation of a single phase
induction motor u reverse either starting winding
connection or running winding (but do not change both
winding connection otherwise it will rotate in the same
direction). For this you can simple reverse the connection
of capacitor.
as single phase Ac induction motor are not self starting
they need capacitor to introduce phase difference.In
capacitor start and capacitor run motor(all ceiling fans) by
interchanging the leads of either capacitor or running
winding we can change the direction of rotation.
as single phase Ac induction motor are not self starting
they need capacitor to introduce phase difference.In
capacitor start and capacitor run motor(all ceiling fans) by
interchanging the leads of either capacitor or running
winding we can change the direction of rotation
we can reverse the direction of the single phase induction
motor by change the connection of the capacitor or by change
the connection of the running winding
we can change the direction of single phase induction motor
by interchanging the leads of main winding or starting
winding,but not both.Also by by interchanging the leads of
capacitor, we can change the direction.
When we are working on transformer(132\11KV). we are going
to isolate the transformer from both HV side and LV side.
then we are applying grounding on both side. My question is
that we required to isolate the VT which is still connected
from secondary side.?
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.
Equal resistance of 100ohm each are connected to the arms
of whestons bridge, which is supplied by 2v battery. The
galvanometer can sense a current low as 1microAmp. What is
the smallest resistance that can be measered.
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