Describe the Basics information of star & delta connection

2. TABLE OF CONTACT:
 Introduction
 Symbols of Star & Delta Connection
 Star & Delta Connection with power Supply
 Star & Delta Connection in Motor of 3 phase
 The difference between Star & Delta Connection .
 The Relationship between (I & V) in Star & Delta Connection
 Examples
 Quiz

3. INTRODUCTION:

4. SYMBOL OF STAR CONNECTION:
Symbol 1 Symbol 2

5. SYMBOL OF DELTA CONNECTION:
Delta Symbol

6. Δ Connection
power Source
Y Connection
Star & Delta connection with power source

7. Star
Delta
Connect Star & Delta connection in Motor of 3 phase

8. The difference between Star & Delta connection
Star Connection
1- Use for low
voltage
2- it give :
220 v , 380 v
3- There is a
Neutral or star
point
Delta Connection
1- Use for
High voltage
2- it give :
400v or more
3- No Neutral
point in delta
connection

9. The relationship and laws between I &V in Y & Δ
connection
Star Y SituationV line = V phase x
I line = I phase
Delta Δ Situation
V line = V phase
I line = I phase x

10. Table of laws between Voltage, Current,
in Star & Delta Connection
Name: Formula: Unit: Symbol:
Line Current (Y) IL = Iph Ampere A
Line Voltage (Y) VL = Vph x √3 Voltage V
Line Current (Δ) IL = Iph x √3 Ampere A
Line Voltage (Δ) VL = Vph Voltage V

11. EXAMPLE (1)
Q1 An electric motor has voltage phase = 220 V , Connected in Star .
A) Calculate the voltage in the line (Vline) ?

12. EXAMPLE (2)
Q2 An electric motor has Current phase = 70 A , Connected in Delta .
A) Calculate the current in the line (Iline) ?

13. THANK YOU FOR YOU
 Directed By:
 Mansour Ali AbuTalib
 Under Supervision Of The Teacher :
Mohammed elmaghawri