Interested to Buy Any Domain ? << Click Here >> for more details...
I am getting differential earth fault in my transformer
realy , i have checked all its CT & control wiring but do
not get fault, Please help
- 6 Answers
- 7963 Views
- I also Faced
- E-Mail Answers
Answer Posted / jiten sharma
Hi, some times when you charge the transformer after some
duration, trafo will take high inrush current. Due to that
it will trip on overcurrent but some times it can be also
give the triping on differential protection with
overcurrent.
So keep the setting slight high and then charge the
transformer. N after charging keep the setting as it is.
It might solve your problem but before that do the all test
on your trafo and then if nothing will found follow this.
Regards,
Jiten
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
why moisture formation found in XLPE Armoured cable outer sheath
What is voltage ratio of a transformer?
How to calculate the size of earth cable to earth the neutral of UPS ?
why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points
How to calculate flow of water delivered by pump when pressure & size of pipe line is given
in science exhibition how lamp can blink when you clap near the lamp ? thank you
which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?
How many kinds of E.L.C.B and how to work E.L.C.B
FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?
What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.
what are the protecyion of transformer & generators
Give the topology of current amplifier with current shunt feedback?
When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?
How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.
1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?
