Answer / kalidass

No need to use neutral connection in three phase motor
connection.
1. If the motor conneciton is in Delta only three phase can
connect.
2. If the motor connection is in Star the star point
(shoted point ) act as a neutral. (krichaffs current law)
So no need to connect the neutral.

in star connected 4wired transmission system ,what happen if the neutral is grounded . or not grounded. which is significant and y

2 Answers  

---

TYPE'S OF BREKAR ,WHAT IS TRANSFORMAR & SAFTY. STARTER DOL & STAR DELTA STARTER.

0 Answers   Amtek,

---

why current flows from +ve to -ve terminal

7 Answers  

---

why multiplying factor is used in wattmeter???

1 Answers   Nippon,

---

What is the difference between AC Drive and VFD?

10 Answers   ITC Infotech,

---

Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP.

0 Answers   ABB,

---

As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

0 Answers  

---

why do we provide metallic enclosure to bus duct and then ground it?

1 Answers  

---

what is the disadvantage of lagging power factor & why ?

2 Answers  

---

what is the application of dynamic Breaking resistor in inverter ? & How it works ?

2 Answers  

---

why the star delta motors burn out frequently

1 Answers  

---

what instruments used for measuring of inductance and capacitance.

2 Answers  

---