RTCC means relay tap changer circuit,these are the relays
which give command to the tap changer present in the
transformer H.T side to either increse or decrese the tap
since due to inductive load ( lagging p.f ) , the secondary
terminal voltage would decrease which would not be good for
the loads so by chnging taps, we increase the primary
voltage which in turn changes the secondary
voltage,normally done online.
RTCC panel is called as the Remote Tap Changer Circuit. it
is used to control the OLTC Tap changer from the control
room or control point itself where RTCC panel is Placed. it
is used to get the stable output voltage.
RTCC MEANS REMOTE TAP CHANGING CIRCUIT. AND REQUIRED FOR
CHANGING THE TAP AT THE HV SIDE OF THE TRANSFORMER ONLINE
IF THE LV SIDE VOLTAGE OF THE TRANSFORMER FLUCTUATE
BEACAUSE OF LOAD. IT HAS AVR (AUTOMATIC VOLTAGE REGULATOR)
TO CONTROL THE TAP CHANGING.
Rtcc is remote tap changer circuit. It is used to change tap position as per requirement of load. It generally maintains voltage at specific value, if there is any change in voltage rtcc gets it at reqd value.
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
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?
My e mail address is firstname.lastname@example.org
Anyone please send me the answer to my e mail address,
i will be very glad.
WHAT ARE THE SITE TEST APPLIED ON A SURGE ARRESTORS? DO
MEGGER TEST APPLIED ON SURGE ARRESTOR? IF YES THEN WHAT ARE
THE ACCEPTED IR VALUE REQUIRED FOR SURGE ARRESTORS FOR
VOLTAGE LEVEL 11KV, 33KV, 66KV 132KV, 220KV AND 400KV?