What is transformer break down voltage.And what is flash
oil flash point.
Answer Posted / pillay
It is transformer oil dielectric breakdown voltage.
A sample of the tx oil is collected and tested with a
special tester. In the tester is a pair of electrode spaced
as per BS
spec. A TEST VOLTAGE IS APPLIED ACROSS THE ELECTRODES , and
this voltage is gradually increased until a breakdown
happens resulting in sparks across the electrode, immeadetly
the test voltage is stoped and the RMS voltage is
calculated.A few test is carried over and the mean voltage
is taken as the breakdown voltage of the sample oil under
test.
It is flash point of oil.The flash point is at what temp the
oil would self ignite. This depends on the quality and type
of oil.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the settings of distance protection relay in 400 kv line
ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?
What is resonant peak?
what is conductor copnstant of ab cable
why u r living from presentaly working.
what is meaning of bus riser
What is current divider rule (cdr)?
How to select a contactor? How many types of contactors are available
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
whate is the meaning of balance/unbalance,in stabilizers type
If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.
How many methods use the load flow solution?
what is load vs Torque curve & why it is used?
What is star-delta transformer?
CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??