what will hapen if secodery circuit is open of current
transformer
WHy neutral to ground trips when neutral touches the ground
- 1 Answers
- 3602 Views
- I also Faced
- E-Mail Answers
Answer Posted / thowsif_emerson_csm team
The CT Will Burn....
Why does opening a CT's secondary cause dangerously high
secondary voltage?
With the flow of both primary and secondary currents the
transformer's exciting current is very low. The secondary
current mmf serves to keep the magnetizing flux in check!
If the secondary now opens the primary current mmf produces
an exciting current 'orders of magnitude' greater than
normal. And, the resultant large increase in flux density
produces an extremely high voltage in the secondary.
Regards,
Thowsif.
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
what is meant by neutral compensation factor and where it is used
th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.
placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!
What is a slack bus?
why Lightening Arrester Probe sharp at Top of telecom tower.
what is the difference between changer, converter and transformer?
what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?
WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?
why on delay timer used for fully automatic star delta starter?
what is meant by 3rd hormonics ?
how could we calculate the no of outgoings from a 800 watt distribution board
WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.
is there any lightning by passer is arranged in ship like buildings?
diff. between tension mode & speed mode
What is meant by derating factor?
