MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 Answers  

---

3phase cable calculation formula by motor load

0 Answers  

---

Why is the air gap between the pole pieces and the armature kept very small?

0 Answers  

---

What is meant by inverse definite mean time (IDMT)& definitemean time (DMT)?

5 Answers  

---

MCCB 400 Amps 50KA 430Volt AC What is mean by 50KA

16 Answers  

---

---

why does a dc machine has high efficiency while working as a generator than as a motor ..

0 Answers  

---

How much costly in percentage wise is sandwich busduct costly than air insulated busduct of any rating?

0 Answers  

---

While miss missed name platform fo electric motor how to calculate simple fourmul,?

1 Answers   ABB, ABC,

---

when we conduct high voltage testing why milli amp. is required?

2 Answers  

---

Why Lighting transformers are used? what will be the current if lightings connected through direct raw power?

1 Answers   BMM,

---

Why a transformer Noise during its running condition ?

8 Answers   NTPC,

---

What is Isolation Transformer???

4 Answers   Emerson,

---