an off load but energized 11/0.4 KV, 1250 KVA T/F has a
power factor of 0.65(capacitive)..!! why is it so, though
T/F being an inductive device ??
Answers were Sorted based on User's Feedback
Answer / anand yadav
The transformer is connected to a capacitor bank or the PF
meter connections are wrong.It is not possible for a
inductive load to show leading PF.
| Is This Answer Correct ? | 1 Yes | 1 No |
Dear
It is not possible. As the transformer is a inductive
device it can only lead to Lagging PF although it is idle
but there was definitely Lag PF the one possibility is that
the transformer is feeding to capacitor panel and because
it is off load so the resulting PF is Leading second thing
can happened that PF relay not working in auto made and
somebody has connected direct capacitor without calculating
the required KVAR to maintain transformer off load PF
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / doss
if its a new transformer please check the test report done by site acceptence tan delta test .its should be the capacitance high ,and dessipation factor also need to check ...
if the result is high means need to check the winding...if the tan@ reading is less than 0.05 the transformer is good condition..so check external..
| Is This Answer Correct ? | 0 Yes | 0 No |
how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours
How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva
What is the Ideal Earth to Neutral Rating for Techonology Equipment like Routers, Switched, PABX, Computers etc etc?
which protection are used for turbo generator in thermal power plant.
How LT megger works ?
What is the amount of no load current of 630 kVA tranformer voltage ratio 11kV/440V ?
How can determine cable size with respect to cable length and area in mm2
What is the difference when selecting a cable between AC and DC current?
when is the Ohms law is applicable?
what will happen if dc machine are supplied by ac source??
where can i get the previous years question papers for APGENCO exam.
If ac 230volts inputsupply to full wave rectifire what is D C output voltage.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)