neutral and ungrounded systems main project seminar ppt

1. A MAIN PROJECT ON
PROTO TYPE NEUTRAL GROUNDING SYSTEM
PRESENTED BY :
S.SUPRIYA (12C51A0237)
V.RAMESH (12C51A0242)
V.SANDEEP (12C51A0241)
M.VAMSI KRISHNA (12C51A0230)
PROJECT GUIDE
Mr.K.R.K.PRASAD
M.Tech(PE)
PROJECT INCHARGE HEAD OF THE DEPT
Mr.V.ASHOK Mr.K.R.K.PRASAD
M.Tech(PE&ED) M.Tech(PE)
SAI SPURTHI INSTITUTE OF TECHNOLOGY
(AN ISO 9001:2011 CERTIFIED INSTITUTION&ACCREDITED BY NAAC-UGC)
B.GANGARAM, SATHUPALLY-507303, KHAMMAM (Dist.).T.S.
Department of Electrical and Electronics Engineering

2. ABSTRACT
• The main aim of the neutral grounding is Protection,
Safety of the power system. grounding is to provide a
low impedance path for current to drain into the
ground at the point of fault with the least clearing
time.
• We are implementing proto type neutral grounding
system and also exhibit the characteristics of the
ungrounded and grounded system.

3. CIRCUIT DIAGRAM

4. COMPONENTS
• Single phase supply
• Single phase transformers
• Mess
• Wires
• Bulbs
• Wire Clips

5. COMPONENT DESCRIPTION
• Single phase supply: Here we use 230v ac supply.
• Single phase transformers : we using 230v/12v 3 step
down transformers connected to the load.
• Bulbs:12v/20w bulbs are used as loads the bulbs are
connected across each phase to the neutral.
• Wire clips: when the fault is created the crocodile clips are
used to make grounding.

6. CIRCUIT OPERATION
• We given single phase AC 230v supply to the three
single phase transformers which are step down to 12v.
• When transformer neutral is connected to the ground.
• When we are given single phase to ground fault at any
phase load voltage across that phase will be zero .
• Reaming healthy phases voltage will be remains
constant. So loads connected to the phases will be safe.

7. PROJECT REPORT
• Half of the project was completed.
• Ungrounded and grounding systems are completed.

8. ADVANTAGES
• Voltage of healthy phases do not exceed line to
ground voltages i.e, they remain nearly constant.
• Detecting the location of fault is easy.
• Safety of personal is more.
• High voltage due to transient line to ground faults are
eliminated.
• It provides improved service reliability.

9. CONNECTION DIAGRAM