3phase 4 wire system is more reliable or 3 phase 3 wire systems?
Answers were Sorted based on User's Feedback
Answer / rahul
3 Phase 4 wire means 3 phases R,Y,B and a neutral, so it is usually used if you need a single phase voltage. For a 3 phase load need just 3 phase 3 wire system.
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / sharaf
yes...an extra earth wire in 3 phse 4 wire systm protects
equipments frm earthing
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / suraj chawardol
We should have clear concept regarding where 3 phase 3 wire system used and where 3 phase 4
Wire system used
1.3 phase 3 wire system= In India electrisity is generat at 11 or 33 kv.then it is step up with the help of tranformer. To transfer it from generation station to substation 3 phase 3 wire system is used. Then it is step down at substation or directly feed to application having such rating. Genarally 11 kv feeder are brought near to distrubution transformer near to load ( near to home genarally called DP). The input to distribition transformer is 11 kv feeder and output of transformer is 440 v , 3 ,phase 4 wire system. ie 3 phase R,Y,B and one neutral.
2. 3phase 4 wire system = the secondary side of transformer is star connected so line voltage become 1/sq root 3, ie near 240 v . Our home appliances are design to work at Approximataly 230 v ,50 hz so we need any one phase and neutal for single phase load .
3. Also for high power application we need 3 phase 3 wire system such as Induction motor.
4. Both the system have its own importance depending on applications.
Is This Answer Correct ? | 1 Yes | 0 No |
The unit of electrical charge is the
why link is provided in neutral of an ac circuit and fuse in phase of ac circuit?
What should be ideal IR value for 11kV, un earthed, 1 MW motor?
what is Anti-pumping?
What is the RME and explain the full form and what is the RME work?
whta does the middle finger stands in flemings left hand rule
what is the difference between brushed alternator ,brushless alternator & permanent alternator ?
what is the difference b/w circuit breakers and relays?
in power generator normaly voltagr betwween esth to neutral is 0 but my work place generator show the volatge is 60v any body know why? thanks
what is the difference between ac and dc?
Can we connect two or more energy meters/Amp meters on one CT set(Three phase).
5 Answers Parle, Watermark Engineering,
What is boucholz relay and the significance of it in to the trformer?